Sealing system of gas-turbine unit, blade of gas-turbine unit and sharp edge of the blade of the gas-turbine unit

UKRAINE

(19) id (11) 61908 (13) C2

(51) 7 G02S7 / 28, P0U5 / 28.23S28 / 00.4 / 02.30 / 00

MINISTRY OF EDUCATION SCIENCE OF UKRAINE

STATE DEPARTMENT OF INTELLECTUAL PROPERTY

DESCRIPTION

TO THE INVENTORY PATENT

(54) GASTRUCTURING INSTALLATION SYSTEM, GASTRUCTURAL INSTALLATION GOST LOADING GASTRUCTURE INSTALLATION

(21) 98116228

(22) 2411 1998

(24) 15 1 2 2003

(31) 08 / 979,065

(32) 2611 1997

(33) from

(46) 15 12 2003, Bull No. 12, 2003

(72) Frilling Melvin, from, Gagtta Dinesh K, IZZ, La Geix Ken, from, Demasie-Marsein Joanin T, ІІ5

(73) United Technologist Corporation, from

(56) IZ, A, 5603603, 18 02 97

from, A, 4744725, 17 05 88

IZ, A, 4680199, 14 07 87

IZ, A, 4610698, 09 09 86

EP, A2, 0765951, 02 04 97

EP, A2, 0340791, 081189

(57) 1 A gas turbine compaction system comprising a rotating element comprising abrasive nozzle which is in a friction state with a stationary sealing surface that is disposed of abrasive, wherein the abrasive cloth comprises a material more solid than the sealing surface that is is subjected to di-abrasives, such that the abrasive nozzle can cut the sealing surface subjected to the diaphragm, characterized in that the abrasive nanosilver contains a metallic binding coating applied to the non-abrasive material, which is substantially free of abrasives chastokpoverhnyu's rotating element layer of aluminum oxide is located on a metal zv'yazuyuchomupokrytti and abrasive coating based oksydutsyrkoniyu having a columnar structure-Van location is a layer of aluminum oxide,

2 The sealing system according to claim 1, characterized in that the metal binding coating includes diffusion aluminide, NI and AI alloy, or MSgAI-Y, wherein M is N, Co, E, or a mixture of N, and Co

3 Sealing system for π 1, which differsthat the rotating element is a blade turbine

4 Seal system under n 3, which is different that part of the profile and part of the platform and

part of the profile or part of the platform of the blade turbine, or both at least partially coated with the thermal barrier of the column structure, which has the same composition as the abrasive nozzle

5, a sealing system according to claim 1, characterized in that the rotating member is a stub of the turbine rotor located on the turbine rotor, and the sealing surface subjected to diabrasives is located on the steering shafts of the turbine to form an internal hermetic seal

6 Sealing system according to claim 1, characterized in that the rotating element is a blade compressor

7, a sealing system according to claim 1, characterized in that the rotating member is a horsepower of the compressor rotor located on the rotor compressor, and the sealing surface subjected to the di-abrasives is located on the stator of the compressor to form an internal sealing seal

8 A gas turbine compaction system comprising a rotating member comprising an abrasive nozzle which is in a friction condition with a stationary sealing surface subjected to abrasives, wherein the abrasive nozzle comprises a material more rigid than the sealing surface of the abrasives subjected to such that the abrasive nozzle can be cut off by the sealing surface subjected to the abrasives, which is distinguished by the fact that the abrasive nozzle contains an abrasive coating on the basis of zirconium oxide having a columnar structure, a bolt an abrasive coating based on zirconium oxide contains zirconium oxide, from about 3% by weight to about 25% of a mass stabilizer selected from the group consisting of magnesium oxide, calcium oxide and their mixtures, and the abrasive nozzle applied to, is a basic- u

9 A sealing system according to claim 8, characterized in that the abrasive nozzle additionally contains aluminum baroxide, is located between the abrasive zirconium oxide coating and the rotating member

cc

at

with

61908

61908

WITH

10 Sealing system according to claim 8, characterized in that the rotating member is a blade turbine

11, a sealing system according to claim 10, characterized in that the part of the profile and the part of the platform and part of the profile or part of the platform of the blade turbine, or both at least partially covered by a covering of the thermal barrier of the column structure having the same composition as the abrasive nozzle

12, a sealing system according to claim 8, characterized in that the rotating member is a stub of the turbine rotor located on the turbine rotor, and the sealing surface exposed to the abrasives is located on the steering shafts of the turbine to form an internal hermetic seal

13 Sealing system according to claim 8, characterized by the fact that the rotating element is a blade compressor

14, a sealing system according to claim 8, characterized in that the rotating member is a horsepower of the compressor rotor located on the rotor compressor, and the sealing surface subjected to the action of the abrasives is located on the stator of the compressor to form an internal sealed seal

A blade of a gas turbine unit comprising abrasive nozzle, characterized in that the abrasive nozzle comprises an abrasive coating on a zirconium oxide base having a column structure, wherein the zirconium oxide-based abrasive coating comprises zirconium oxide I from about 3% by weight to about 25% by weight of a stabilizer selected from the group consisting of oxiditrile, magnesium oxide, calcium oxide and mixtures thereof

4

16. The blade of claim 15, wherein the abrading nozzle additionally comprises a metallic binding coating comprising diffusion aluminide, a NI and AI alloy, or MS.sub.A.IN., wherein M is N, Co, Re, or a mixture of N1 and Co, located between the abrasive coating on the basis of zirconium oxide and the rotating element

17 The blade according to claim 15, characterized in that the abrasive nozzle further comprises a layer of oxide aluminum, located between the abrasive coating on the basis of zirconium oxide and a rotating part-man

18 A sharp edge of a gas turbine blade blade comprising an abrasive nozzle, characterized in that the abrasive nozzle comprises abrasive-coated on the basis of a zirconium oxide having a columnar structure, wherein the abrasive coating of zirconium oxide contains zirconium oxide and from about 6% up to about 20% of a mass stabilizer selected from the group consisting of oxide of magnesium oxide, magnesium oxide, calcium oxide and their mixtures

19 The sharp edge of the blade according to claim 18, characterized in that the abrasive nozzle further comprises a metallic binding coating comprising dispersion aluminide, an alloy of NI and AI, or MSAgV, wherein M is N, Co, Re, or a mixture of N, and Co, located between the abrasive coating on the basis of zirconia and a rotating element

20 The sharp edge of the blade according to claim 18, characterized in that the abrasive nozzle further adds a layer of aluminum oxide, which is located between the abrading coating on the basis of zirconium oxide and an ore element

The present invention relates, primarily, to abrasive coatings that are used for rotating elements in gas turbine installations in order to enhance the sealing tightness of the compaction, thus minimizing the loss through the gap and increasing the durability of the rotary elements

Gas turbine plants typically include different systems of rotary seals to ensure a difference in working pressure, which is significant for the characteristics of the installation. One type of sealing system contains a rotating element of the type of a turbine blade, disassembled in friction in contact with a stationary, polished sealing surface In the state of the gravel, a small working gap between the turbine blade and the sealing surface is formed in order to limit the amount of working gas that the turbine blades are removed. Very large clearance It is not desirable to allow large volumes of working gas to flow out between the turbine blade and the sealing surface, thereby reducing the efficiency of the installation. Similar systems are generally used in the internal and external sealed seals of the compressor and sections of the turbine

To provide the desirable small working gap, a rotating element, for example, a blade turbine, usually has an abrasive nozzle, able to cut off the sealing surface that is in contact with When the turbine assembly is mounted on, between the rotating element and the sealing surface is a small clearance. the time of the installation of the rotating element is prolonged due to the centrifugal forces and the increasing temperature of the installation, and rub about the sealing surface. The abrasive nozzle of the rotating element cuts the sealing surface forming and imperceptible gap. The intentional contact between the abrasive mortar and the sealing surface is compatible with the cyclicality of the temperatures and pressures typical of gas turbine units, forms a medium of high wear for both the sealing surface and the abrasive nozzle

In order to limit erosion and the degradation of the germ-brightening surface, thereby providing the desired gap between the rotating element and the sealing surface, the sealing surface, as generally, is made of relatively solid, weakly worn materials. For example, porous metal, ceramics, plasmono is sprayed onto metal-coated coating, plasma-sprayed alloy, no-

61908

5

cell containing boron nitride (BN), or cell-like material - ordinary materials for sealing the surface

If the rotating element does not have the appropriate abrasive nozzle, the sealing surface with which it is connected can cause significant wear of the rotating element. In addition to reducing the characteristics of the installation, it is not desirable also because the rotating elements, especially the blade turbine and compressor, can be very expensive repair or replacement. As a result, the materials used for the manufacture of abrasive nozzles are usually more solid than sealing the surfaces with which they are bonded. For example, materials such as aluminum oxide (ZH2O3) containing zirconium oxide (ZG2O3), which is hard-wearing an apymium oxide coated with a galvanically cubic bone (KBN), cobalt tungsten carbide (UCSO), silicon carbide (ZiC), silicon nitride (Z13ICH4 ), including particles of silicon nitride, which are absorbed by a metal matrix,

The upper part of the nozzle usually consists of a "boat" of a heat-resisting alloy filled with abrazivnyh particles and a metal matrix. Abra-zvilnyh particles can be silicon carbide, silicon, silicon, and aluminum oxynitride (3yAΙΟΝ) and mixtures of these materials. Metal matrix, this can be a heat resisting alloy on the base of NI, SooRe, which includes a chemically active methyl group Y, H, Ti, Mo, or Mn, "Lodochka" joins a nozzle of a rotating element, such as a turbine nozzle, with the aid of connected technologists the transition to the liquid phase of Nasadka, etc. Technological connections to the transition to the liquid phase are described in US Patents 3,678,570 in the name of Poponis and others, 4,038,041 by the name of Duupy and others, 4,122,992 on behalf of Du-Wapa and others, 4,152,488 for the name of Shilke, etc. , 4,249,913 names of Johnson and In, 4,735,656 on the '

Poured abrasive nozzle, as a rule, includes aluminum oxide coated with abrasive particles of silicon carbide or silicon nitride, surrounded by a metal matrix, which is then trained to bare particles. Such nozzles are described in US Patent Nos. 4,610,698 to Eton et al., 4,152,488 in the ' I Shilke and others, 4,249,913 to Johnson et al, 4,680,199 to the name of Wontel and others, 4,468,242 to the name of Paika, 4,741,973 to the name of Kondgta, etc., and 4,744,725 to the name of Mataris, etc. We also spray and abrasive nozzles Sometimes they are connected with plasma-filled ceramic or metal clad densities. Although on sawing abrasive nozzles successfullyused in many installations, theycan be severely reproduced,

6

Filled abrasive nozzles may be insufficient for some of the applications under consideration

Galvanically coated κΒΝ abrasive nozzles, as a rule, includes a plurality of abrasive sections of κΒΝ, which are galvanically covered with a meta-left matrix. The matrix may be nickel, MΟγΑΙΥ, where M is Ga, Nι, Co, or a mixture of Nι and Co, or a different metal or alloy. cubic boron nitride is an excellent cutting device because κΒΝ is more solid than any other mether of abrasive particles other than diamond Galvanically coated compounds of κΒΝ are fully suitable for use in a compressor through a relatively low temperature (that is, less than about 1500 ° P [815 ° С]) environment. Similar nozzles, however, may have a limited resource in gas turbine applications, because a higher temperature in the turbine sections can cause the oxidation of abrasive particles, and possibly even a metal matrix. Though the galvanically-coated κΒN nozzles are usually cheaper,

Therefore, industry needs abrasive nurseries for seals gas turbine installations that would be highly abrasive, more durable, and cheaper in production than those that are present at this time

This invention relates to abrasive nozzles for gas turbine seals, which are highly abrasive, more durable and less expensive in the production than those present in the present time.

One aspect of the invention includes a system of stabilizing a rotating element gas turbine unit having an abrasive nozzle which is in a friction state with a grinding sealing surface. Abrasive nozzle which is more solid than the polished sealing surface, so that the abrasive nozzle can a cut-off sanding sealing surface, includes all the abrasive coating of zirconia, nano-wall directly on, mainly, the free surface of the surface of the rotating element Abrasive coating of zirconium oxide has a column with Hand tour and includes zirconium oxide and about 3% by weight to about 25% by weight, stabilization Optimizer stabilizer may be yttrium oxide, oxide mahayiya, calcium oxide or a mixture of these mothers aliv

In another aspect of the invention, the abrasive nozzle includes a metallic bonded coating, a nano-wall on, generally, abrasive-free surface of the rotating element, a layer of oxidealuminium, located on a metallic bonded coating and an abrasive coating of zirconium oxide Anion with a columnar structure deposited on a sharoxide aluminum. The abrasive coating of zirconium oxide contains zirconium oxide and from about 3% by weight to about 25% by weight of a stabilizer, which may be iodide oxide, magnesium oxide, oxidicating or a mixture of these materials.

In addition, another aspect of the invention relates to

gas turbine blades or acute crushers

Keeping abrasive nozzle Abrasive nozzle

includes an abrasive coating of zirconium oxide

7

61908

a conic having a columnar structure and containing zirconia and from about 3% by weight to about 25% by weight of a stabilizer selected from the group consisting of ittria oxide, magnesium oxide, oxidecalcium and mixtures thereof

These and other features and advantages of the present invention will become more apparent from the description of the invention and the accompanying drawings

FIG. 1 shows a central view of a partially-longitudinal incision of a gas turbine plant

FIG. 2 is a sectional view of the outer and inner sealing compartments of the compressor according to the present invention

3 is a central view of a turbine blade with an abrasive nozzle, according to the present invention

4 is an enlarged image of a columnar structure of the abrasive nozzle according to the present invention

The abrasive nozzle according to the present invention can be used in gas turbine installations at high wear, which requires maintaining a sealed gap between the rotating and stationary elements. For example, this product is particularly suitable for such use as abrasive nozzle of a turbine or blade compressor, or as a sharp edge of the compressor or turbine The abrasive end of the blade or acute crumble according to the present invention may be combined with a primed, sanded sealing surface, so as to form an external or internal the latter is a hermetic seal

FIG. 1 depicts a typical gas turbine unit 2 comprising a section of compressor 4 and a turbine section 8. The compressor section 4 includes a compressor rotor 8 located inside the compartment housing 10 Compressor shovels 12, one of the rotating parts in the engine mounted on the rotor 8, the steering blades of the compressor 14 are located between the blades 12. Similarly, the turbine section 6 includes the turbine rotor 18, located inside the turbine 18. The blades of the turbine 20, the second insert parts in the installation, mounted on the rotor 16, and the turbine steering blades 22, p zmische-20 or between the shoulder blades

Figure 2 shows outer sealing compaction 24 and internal sealing compartments 26 of the compressor 4. Each outer seal seal 24 includes an abrasive nozzle 28 located at the end of the blade of the compressor 12 in the friction surface with a grounded external sealing surface of the SOF surface. For the purposes of this invention, the two components are in a friction state , while the gap between them allows for direct contact between com-ponents at least once when the installation is revealed after cleaning. Each inner seal seal 26 includes abrasive nose Ku 32, located at the end of 34 acute kromkykompresora able terwith a polished inner sealing surface 36 arranged on the steering shafts 14 of the compressor. The expert will appreciate that such external and internal sealing seals, possibly similar to those described above, can be used in the turbine section 6 and other sections of the installation in addition of compressor sections 4

8

FIG. 3 depicts a shaft of the turbine 20 of the present invention having an abrasive nozzle 28 which includes a metallic binder 38 provided at the end of the turbine blade 20 of the turbine 20 and an aluminum oxide layer (AlO 4) 42 on the binder layer 38 and Abrasive coating 44 of zirconium oxide (ΖγΟξ) deposited on a layer of aluminum oxide 42. The abrasive nozzle of the present invention may be placed directly on the rotating part as shown or may be applied to the subassembly mounted to the surface of the rotating part. For example, the abrasive nozzle according to the presented- wines Aid can be applied to an aluminum coating which is diffused to the surface of the rotating part. The abrasive nozzle of the present invention must, however, be joined to a surface which is, in principle, free of grains of abrasive,

Although the abrasive nozzle 28 of this invention, which includes a metallic bonding coating 38, is shown in FIG. 3, the binding coating is optional and can be removed if the abrasive coating of zirconia 44 is well bonded to the shrink component , with which it is applied without a binding coating 38 If no binding coating is used, it may be desirable to produce a rotating part from an alloy capable of forming a densely adjacent layer of oxide aluminum, which is comparable to that of an alumina 42. One such alloy has a nominal composition 5 OSG-10So-1 OMo-5 9 / A / -3 0Re-8 4Ta-5 65Ai-0 25Ni-0 013Y, the other - NVV of most applications of binder coating 38 is more preferably to provide good adhesion between the abrasive nozzle 28, 32 and a rotating component and provide a good surface for forming an alumina 42 layer and applying an abrasive coating of zirconia44. The appropriate choice of the binding coating 38 will be prevented or prevented by the removal of the abrasive coating from zirconium oxide 44 from the bonded coating 38 as well as the detachment of a completely abrasive nozzle 28, 32 during the installation. The detachment of the abrasive coating from zirconium oxide 44 or the entire abrasive nozzle 28, 32 during the work can reduce the durability of the rotary de-tail and weaken the character Installation drawings, by removing the working gap between the rotating part and the sealed sealing surface

The metal binding coating 38 of this invention can be any metal scrap material known in the art, which can form a strong bond between the rotating part of the gas turbine installation and the abrasive coating 44 of the oxidation of zirconium. Such materials, as a rule, contain pre-stationary AIs to form a tightly fittinglayer of aluminum oxide, which provides a goodconnection with the abrasive coating of zirconium oxide

61908

9

44 For example, a metallic bonding coating may comprise a diffusion aluminide containing one or more noble metals, a NI and AI alloy, or MSAIIU wherein M is Re, N, Co, or a mixture of Ni and Co Tg, the term MSGIAU also encompasses compositions comprising additional elements, or combinations of elements of the type Ci, Ni, Ta, Kj or the precious metals known in the MSGIA technique may also include a layer of diffused apiminid, in particular, aluminide containing one or more noble metals. Preferably, the meta-leve bonded coating 38 , will include MSGIA nonominal composition of NI-22O-I7Oγ-II2-5O-O25N-O45I-0 6Y This composition is described in US Patents 4,585,481 and Re 32,121, both of which are referred to as Gupta, et al., Both of which are hereby incorporated by reference in the form of a reference.

The metal binding coat 38 may be deposited in any manner known in the process for the application of such materials. For example, the bonding coating 38 may be applied by a plasma pressure-stroke (PSNT), air-plasma jet (PPS), physical coating of the coating electronically a beam with deposition of a pair (EP-FNP), a galvanic coating, a cathodic arc, or any other method. The metallic binding coating 38 should be applied to a rotating part with a thickness sufficient to ensure a firm connection between the rotating part and brazyvnym oxide coated circus and Bosnia 44 and prevent the spread of cracks in schorozvyvayutsya abrasive coating 44 of oksydatsyrkoniya 44, turned parts DPJ most up-taxes, metallic conn

The oxime apymium layer 42, which is sometimes referred to as a thermally increasing oxide, can be formed on a metal binding coating 38 or with a rotating component in any way that leads to the formation of a single tightly adherent layer. Thus, in the presence of a metallic bond, the coating layer 38, the oxide layer, the apymium 42 is non-binding. Most preferably, however, the abrasive nozzle 28 includes an aluminum oxide layer 42. For example, the layer 42 may be formed by oxidation of AI or in a metal binding coating 38, or with a rotating component at elevated temperaturereper applying an abrasive coating of oksydatsyrkoniya 44 In addition, the oxide layer apyuminiya 42mozhe be applied way spraying chemical-tion coating deposition from vapor or any yakyminshym suitably deposition technique known zrivnya apyuminiya oxide thickness of 42, if present,

10

(0.01 microns) to about 0 4 milli (10 microns) thicker

Abrasive coating 44 of zirconia can be a mixture of zirconia oxide and a stabilizer of the oxide type (U₂AT₂) Magnesium oxide (MgO), oxidecalcium (CaO), or mixtures thereof Oxide iftria - an important stabilizer The abrasive coating from zirconium oxide 44 should include sufficient amount of stabilizer to prevent undesired phases of the transformation of zirconium oxide (i.e., the change of the neurotransmitter tetragonal or cubic crystalline structure on the less desirable monoclinic crystalline structure) outside the boundaries of the working temperature range expected for a particular gas turbine installation. Preferably, the abrasive coating of zirconia zirconia should include an amount oxidation of zirconia and from about 3% by weight to 25% by weight of petroleum oxide. The most preferred abrasive coating of zirconia 44 should comprise from about 6% by weight to about 8% by weight of petroleum oxide or from about 11% by weight to about 13% of mass of yttrium oxide,

As shown in FIG. 4, the abrasive coating of zirconia 44 should have a plurality of column-like segments that are homogeneously dispersed throughout the abrasive coating in such a way that the cross-section of the abrasive coating perpendicular to the surface to which this abrasive coating is applied is pivotal ( column) microstructure, typical for the coating deposited by the physical deposition of the pair. The column structure must have a length which forms up to the full thickness of the abrasive coating of zirconium oxide. 44 Such coatings are described in US Patents 4,321,310 for the name of Ulyun and others, 4,321,311 to Strangeman, 4,401,697 to Strangeman, 4,405,659 to Strangerman, 4,405,660 to Ulyun and others, 4,414,249 to Ulyun and others, and 5,262,245 to the name Ulyuna and others,

The abrasive coating of zirconia oxide 44 may be applied by the method of EP-FNP or by any other physical method of coating the coating with a pair known for coating the coating of the column structure. Preferably, for the coating coating 44 of the present invention, the method of EP-FNP through the pre- The strength of its equipment and the availability of skilled specialists As discussed above, the abrasive coating 44 may be applied to the metal bonding coating 38 or directly to the rotating part, in both cases, the preferred o with a layer of aluminum oxide 42 In any case, abrasive coating 44 povynnomaty thickness sufficient to ensure tight first communication with the surface to which it is applied Dpyabilshosti applications

61908

11

(125 microns) to about 25 mils (625 microns) thicker. For turbine blades or compressors, it is desirable to apply a relatively thick abrasive coating 44 to provide grinding of the compressor or turbine rotor assembly in which they are installed. Grinding removes part of the abrasive coating 44 from the ends of the blades, which compensates for small variations in the thickness of the layer, which develop due to tolerances in the process of forming the coating. Starting from a relatively thick abrasive coating 44, it can be obtained during the grinding procedure in the new, round rust, when coated ezhenni final abrasive pokryttya44 which is still thick enough to cut the effective-but sealing surface

The grinding capacities of the sealing surfaces ZO, 36 according to the present invention may comprise any materials known in the art that have good compatibility with the environment of the gas turbine plant and can be cut off by abrasive coating. 44 For use in high pressure turbines, preferred grinding (dispersed) The metering material includes a metallic bound coating (in particular, 5 0C-10Co-1 OMo-5 9M-3 OYa-8 4Ta-5 65Ai-0 25 NTO 013Y, other NI) and a porous ceramic layer (in particular, zirconium oxide, stabilizer- Called about 7% by weight of oxide of tetrahydrofuran ) The binding coating may be applied by a spray-jet plasma jet or by precipitation with high-speed oxidizing pores. The ceramic layer may be applied to a plasma spray-blended mixture, containing about 88% by weight of about 99% by weight of ceramic powder and about 1% by weight to about 12% of the mass of the aromatic polyester resin. Polyethersulfur is subsequently fired from the ceramic layer forming a porous structure. For use with a high pressure compressor, a preferred sandwich subject to the action of abrasives) sealingmaterial contains a heat-resistant alloy on the nickel base and a combination of heat resisting alloy on the basis ofnickel (in particular, 9Sg-9 \ A / -6 8AI-3 25Ta-0 02C, other NI and in small amounts of other elements, incl. CHINES TO INCREASE STABILITY TO OXIDATION) Boron intruder as a topcoat Bound in the coating can be formed by plasma-spraying of powder, which is formed by a method of hardening at high speed. The upper hermetic can be formed by plasma spraying of a mixture of powder for the '

12

ny / zirconia, stabilized approximately 20% by weight of ittria oxide), and a porous ceramic layer (in particular, zirconia, stabilized approximately 7% by weight of sodium oxide) Other possible materials for sealing surfaces include porous metal and cellular materials Suitable materials for the sealing surface are described in US Patents 4,481,237 to Bossart et al., 4,503,130 to the names of Bossart et al, 4,585,481 to the name of Gugtta et al, 4,588,607 to the name Mataris et al., 4,936,745 to Vayna et al, 5,536,022 to the name of Silo and others, and Ke 32,121 on behalf of Gupta, etc., each of which is presented as s-th links

The following example demonstrates the present invention without limiting its framework

Example

The abrasive nozzle of the silicon dioxide column oxide according to the present invention was used in rectangular samples of 0 25 in. (0 64 cm) x 0 15 in. (0 38 cm) using the pretreatment technology of deposition. The nozzle includes a metallic binding coating of about 3 cu (75 μm) of thickness, deposited by a low-pressure plasma-jet stream containing I \ Ii-22Со-17Сг-12 5АІ-0 25НТ0 43ι-0 6Y. After precipitation, the metal binding coating was treated with thermodiffusion coating at approximately 1975Т (1079 ° C) and provided with a reinforcing blast-blast furnace TCO - layer approx. but 0 04 milli (1 microns) thickness was created on the surface of the binding coating in conventional methods Finally, at-about 5 mil (125 microns) of columnar ceramics, which contains zirconium oxide, stabilized 7% of the mass of oxide of bromide was applied with the usual physical process of coating the coating with a pair of particles with an electron beam. Covered samples for the test were placed in a tribological stand opposite the sealing material, which included sequentially arranged layers with M-6AI-18 5Sg - metallic binding coating , a fractionated Co-23Sg-IZAI-0 65 Y layer and aluminum oxide, a fractious dense ceramic layer of oxide aluminum and zirconia, stabilized approximately 20% by weight of ittria oxide, and porous zirconium borohydride, tabilizovanyy about 7% yttrium oxide mass pochy tribological stand-Nav job at sealing Returning Their flat-ambient seredovyschai speed nozzles create 1,000 feet of Sekun do (305 m / s)

13

61908

14

Table 1

<tr><td><p>Sample for testing</p></td><td><p>1</p></td><td><p>2</p></td></tr><tr><td><p>Temperature of the sealant, which is exposed to friction - ° Р ("С)</p></td><td><p>2200 (1204)</p></td><td><p>1925 (1052)</p></td></tr><tr><td><p>The temperature of the blade, which is exposed to the friction - ° Р</p><p>(WITH)</p></td><td><p>2800 (1538)</p></td><td><p>2105 (1152)</p></td></tr><tr><td><p>Average wear of the shoulder blade - cute (μm)</p></td><td><p>7 0 (177 8)</p></td><td><p>10 0 (254 0)</p></td></tr><tr><td><p>Average wear of the sealant - soap (microns)</p></td><td><p>12 0 (304 8)</p></td><td><p>9 0 (228 6)</p></td></tr><tr><td><p>Full Interaction - Cute (μm)</p></td><td><p>19 0 (482 6)</p></td><td><p>19 0 (482 6)</p></td></tr><tr><td><p>Linear wear PΛ // Ι)</p></td><td><p>0 368</p></td><td><p>0 526</p></td></tr><tr><td><p>Volumetric wear (\ ΑΛ / β)</p></td><td><p>0 075</p></td><td><p>0 071</p></td></tr>

Linear wear (UU / I) is the ratio of the linear quantity of abrasive material material removed from the rotating part to the sum of the linear quantity of material removed from the zirconium and immobile elements together. The lower the value UU / \, the better the abrasive nozzle works when Cutting of the sealing material Although the determination of the ratio ΛΛ // Ι is a simple and useful method for analyzing the wear of the end of the shoulder blade, it depends on the geometry of the sample for the test and the top of the sealant that is used in the second-stand booth of the Alternative The way of measuring the wear - the ratio of wear (OVZ) - does not depend on the sample of the exam and geometry

The sealing surface of the OVR is the loss of the volume of the abrasive nozzle to the volume of the sealing coating removed during the friction. Again, the lower value of this relationship indicates that the abrasive nozzle is more effective at cutting the sealing material

Table 2 compares the results of OVPs from the Annex with the data of the well-known their level of technology of nasadok from aluminum oxide, hardened by the circoconium oxide, with blown nozzle pads, deposited with abrasive nozzles and nozzles coated galvanically with κΒΝ, which interact with the friction pathway. with the same sealing material used in the same way as in Example 1

Table 2

<tr><td><p>Attachment configuration</p></td><td><p>Average number of HIA</p></td></tr><tr><td><p>Alumina Oxide, zirconium oxide (technology level)</p></td><td><p>1 4</p></td></tr><tr><td><p>Sprayed (technology level)</p></td><td><p>1 18</p></td></tr><tr><td><p>Spray abrasive nozzle (level of technology)</p></td><td><p>0 63</p></td></tr><tr><td><p>Covered galvanically κΒΝ (technology level)</p></td><td><p>&lt;0 01</p></td></tr><tr><td><p>Colonic Zirconium Oxide (represented by the invention)</p></td><td><p>0 07</p></td></tr>

Although tests on the tribological stand showed that the abrasive nozzles from the columnar oxide of zirconia according to the present invention did not demonstrate such good results as the kBN nozzles, they applied galvanically, but they yield considerably better results than other previously manufactured nozzles. Except the abrasive nozzles from the columnar oxide zirconium have several advantages compared with nozzles κΒN. For example, they are not prone to oxidation. Also, abrasive nozzles from columnar zirconia can be simplified by technologists,

when used together with the coatings of thermal barriers on the profile of the blade and platform, the nanosized EP-FNP method. This can be done simultaneously and will improve the integrity and coating, and nozzle in the nozzle area compared with other configurations of abrasive nozzles

The invention is not limited to the individual embodiments shown herein. Within the invention, various changes and additions can be made without going beyond the scope of the claimed invention.

FIHL

15

61908

16

Computer layout M Klyukin Signature EditionZEprim

Ministry of Education and Science of Ukraine

State Department of Intellectual Property, Lvivska square, 3, m Kyiv, SME, 04355, Ukraine

State Enterprise "Ukrainian Institute of Industrial Property", 15, Families of Khokhlovyh, m. Kyiv, 04119