Heat treatable coated article with diamond-like carbon (dlc) coating

Method of manufacturing a heat treated coated article, the method comprising: providing a glass substrate (1); forming at least one layer comprising diamond-like carbon (DLC) (11) on the glass substrate; forming a protective layer (17) comprising a zirconium nitride and / or chromium on the glass substrate over at least the layer comprising DLC ​​(11); heat treating the glass substrate with the layer comprising DLC ​​(11) and the protective layer (17) comprising zirconium nitride and / or chrome that during heat treatment the protective layer (17) to avoid a major burns the layer comprising DLC; and removing at least part of the protective layer (17) comprising zirconium nitride and / or chromium after said heat treatment.