Method of applying a cerium diffusion coating to a metallic alloy

Patent · Tue Jun 30 00:00:00 EDT 2009

OSTI ID:963875

Jablonski, Paul D ^[1]; Alman, David E ^[2]

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1. Salem, OR
2. Benton, OR

A method of applying a cerium diffusion coating to a preferred nickel base alloy substrate has been discovered. A cerium oxide paste containing a halide activator is applied to the polished substrate and then dried. The workpiece is heated in a non-oxidizing atmosphere to diffuse cerium into the substrate. After cooling, any remaining cerium oxide is removed. The resulting cerium diffusion coating on the nickel base substrate demonstrates improved resistance to oxidation. Cerium coated alloys are particularly useful as components in a solid oxide fuel cell (SOFC).

• Research Organization: Albany Research Center (ARC), Albany, OR (United States)
• Sponsoring Organization: USDOE
• Assignee: The United States of America as represented by the United States Department of Energy (Washington, DC)
• Patent Number(s): 7,553,517
• Application Number: 11/226,283
• OSTI ID: 963875
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE