Coating processes – Applying superposed diverse coating or coating a coated base – Metallic compound-containing coating
Reexamination Certificate
2011-03-22
2011-03-22
Speer, Timothy M (Department: 1784)
Coating processes
Applying superposed diverse coating or coating a coated base
Metallic compound-containing coating
C427S419300, C427S419700
Reexamination Certificate
active
07910172
ABSTRACT:
A method for fabricating a component having an environmental barrier coating. The method includes providing a component including silicon having a first coefficient of thermal expansion. A bondcoat is bonded to at least a portion of an outer surface of the component. An intermediate layer having a general composition of RE2Si2O7is bonded to the bondcoat. The intermediate layer has a second coefficient of thermal expansion matched to the first coefficient of thermal expansion. A protective layer having a general composition of RE2SiO5is bonded to the intermediate layer. A surface layer is bonded to the protective layer. The surface layer includes RE and has a ratio of RE to oxygen of at least 2:3.
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Johnson Curtis Alan
Luthra Krishan Lal
Meschter Peter Joel
Sarrafi-Nour Reza
Agosti Ann M.
General Electric Company
Speer Timothy M
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