Stock material or miscellaneous articles – All metal or with adjacent metals – Composite; i.e. – plural – adjacent – spatially distinct metal...
Reexamination Certificate
2011-08-09
2011-08-09
Baldwain, Gordon R (Department: 1784)
Stock material or miscellaneous articles
All metal or with adjacent metals
Composite; i.e., plural, adjacent, spatially distinct metal...
C416S24100B, C416S248000, C416S24400R
Reexamination Certificate
active
07993759
ABSTRACT:
A gas turbine engine turbine blade comprising an airfoil section, a platform section, an under platform section, and a dovetail section, an exterior surface of the dovetail section comprising a shank exterior surface and a serrated exterior surface. The blade further comprises a silicon-modified diffusion aluminide layer a surface of a turbine blade section selected from the group consisting of an exterior surface of the under platform section, the exterior surface of the dovetail section, and combinations thereof, the silicon modified diffusion aluminide layer having a concentration of silicon at a surface of the silicon-modified diffusion aluminide layer in the range of about 1 weight percent to about 10 weight percent and a concentration of aluminum at the surface of the silicon modified diffusion aluminide layer in the range of about 5 weight percent to about 25 weight percent.
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Neff, Robert A., Katz, Gerald B., Nagaraj, B., and Tarvin, Rachel; Metallurgical Analysis of Rainbow Rotor Coatings: Analysis of Fleet Blades; American Society of Mechanical Engineers; Jun. 2004; pp. 1-11; International Gas Turbine Institute.
Gorman Mark D.
Nagaraj Bangalore A.
Baldwain Gordon R
General Electric Company
McNees Wallace & Nurick LLC
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