Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
James Alexander Hearley0
Abdus Suttar Khan0
Ian William Boston0
Date of Patent
November 4, 2008
0Patent Application Number
107997550
Date Filed
March 15, 2004
0Patent Primary Examiner
Patent abstract
It is disclosed a method of deposting a seal coating and a seal system comprising at least two layers on the surface of an article. The upper or surface layer has a higher chromium activity than a bottom layer to reduce a diffusion of cobalt and the formation of cobalt oxide is reduced. The coating of invention may be heat-treated to reduce or optimize the formation of cobalt oxide to sustin the wear property.
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