Metal treatment – Process of modifying or maintaining internal physical... – Processes of coating utilizing a reactive composition which...
Patent
1993-10-12
1995-06-06
Roy, Upendra
Metal treatment
Process of modifying or maintaining internal physical...
Processes of coating utilizing a reactive composition which...
148217, 148222, 148230, 148286, 148287, 427528, 427574, 427578, 4284722, C23C 806
Patent
active
054219140
ABSTRACT:
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
itrogen containing protective layer on the iron based alloy.
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Koehler Robert R.
Roy Upendra
The University of Chicago
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