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Title: Method of applying a cerium diffusion coating to a metallic alloy

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).
Authors:
 [1] ;  [2]
  1. Salem, OR
  2. Benton, OR
Publication Date:
OSTI Identifier:
963875
Report Number(s):
7,553,517
US patent application 11/226,283
Resource Type:
Patent
Research Org:
Albany Research Center (ARC), Albany, OR
Sponsoring Org:
United States Department of Energy
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE