Nova Patents
US3676085A

Cobalt base coating for the superalloys

Abstract

The oxidation-erosion and sulfidation resistance of the nickel- and cobalt-base superalloys is markedly improved through the use of a coating consisting of cobalt, chromium, aluminum and an active metal such as yttrium, particularly at the composition, by weight, of 15-40 percent chromium, 10-25 percent aluminum, .01-5 percent yttrium, balance cobalt.

Term

Term ended

Expired 11 July 1989, 37.2 years ago.

  1. Priority and filed
  2. Granted
  3. Expired
  4. Today

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