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Title: Surface modification of high temperature iron alloys

Patent ·
OSTI ID:869916
 [1]
  1. Clarendon Hills, IL
+ Show Author Affiliations

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.

Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States)
DOE Contract Number:
W-31109-ENG-38
Assignee:
University of Chicago (Chicago, IL)
Patent Number(s):
US 5421914
OSTI ID:
869916
Country of Publication:
United States
Language:
English

References (4)

Electronic transport in thermally grown Cr2O3 journal February 1990
Role of yttrium in enhanced adhesion of chromia scale to chromium journal October 1989
Oxidation behavior of iron-chromium alloys at elevated temperatures: A reactive-element effect report March 1992
Effect of y on Cation and Anion Grain Boundary Diffusion in Chromia journal January 1990

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Related Subjects

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/