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Title: Surface modification of high temperature iron alloys

A method and article of manufacture of a coated iron based alloy. The method includes providing an iron based alloy substrate, depositing a silicon containing layer on the alloy surface while maintaining the alloy at a temperature of about 700.degree. C.-1200.degree. C. to diffuse silicon into the alloy surface and exposing the alloy surface to an ammonia atmosphere to form a silicon/oxygen/nitrogen containing protective layer on the iron based alloy.
Inventors:
 [1]
  1. (Clarendon Hills, IL)
Issue Date:
OSTI Identifier:
869916
Assignee:
University of Chicago (Chicago, IL) ANL
Patent Number(s):
US 5421914
Contract Number:
W-31109-ENG-38
Research Org:
Argonne National Laboratory (ANL), Argonne, IL
Country of Publication:
United States
Language:
English
Subject:
surface; modification; temperature; iron; alloys; method; article; manufacture; coated; based; alloy; providing; substrate; depositing; silicon; containing; layer; maintaining; 700; degree; -1200; diffuse; exposing; ammonia; atmosphere; form; oxygen; nitrogen; protective; iron based; protective layer; surface modification; nitrogen containing; alloy surface; based alloy; ammonia atmosphere; alloy substrate; silicon containing; iron base; iron alloys; iron alloy; containing layer; /148/427/428/