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Title: Surface modification of high temperature iron alloys

A method and article of manufacture of a coated iron based alloy are disclosed. 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--1200 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. 13 figs.
Inventors:
Issue Date:
OSTI Identifier:
63452
Assignee:
Univ. of Chicago, IL (United States) PTO; SCA: 360601; PA: EDB-95:091421; SN: 95001401185
Patent Number(s):
US 5,421,914/A/
Application Number:
PAN: 8-135,295
Contract Number:
W-31109-ENG-38
Resource Relation:
Other Information: PBD: 6 Jun 1995
Research Org:
Univ. of Chicago, IL (United States)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; IRON BASE ALLOYS; PROTECTIVE COATINGS; FABRICATION; SILICON COMPOUNDS; OXYGEN COMPOUNDS; NITROGEN COMPOUNDS; HEAT RESISTING ALLOYS; TEMPERATURE RANGE 1000-4000 K