Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Date of Patent
January 16, 2007
Patent Application Number
10763375
Date Filed
January 23, 2004
Patent Citations Received
Patent Primary Examiner
Patent abstract
A raw material powder having particle sizes of not more than 125 μm and preferably not more than 75 μm, such as a powder of an alloy of Co-32% Ni-21% Cr-7.5% Al-0.5% Y is thermally sprayed onto surfaces of shroud members of a shroud to form a coating. The high velocity oxygen-fuel thermal spray method is used as the thermal spray method. In the obtained coating, the porosity is 5% to 30% by volume and the oxygen content is not more than 2% by weight. In particular, when the raw material powder has particle sizes of about 40 μm, it is possible to obtain the coating which has an extremely small oxygen content of about 0.5% by weight.
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