Stock material or miscellaneous articles – Composite – Of metal
Patent
1997-12-10
2000-03-14
Speer, Timothy
Stock material or miscellaneous articles
Composite
Of metal
428472, 148280, 148286, B32B 900, C23C 810
Patent
active
060370610
ABSTRACT:
A method of readily forming passive oxide film based on chromium oxide characterized by subjecting stainless steel to electrolytic polishing and fluidized abrasive polishing, baking the steel thus treated in an inactive gas to remove moisture from its surface, and heat treating the resultant steel at 300 to 600.degree. C. in a gaseous atmosphere comprising hydrogen or a mixture with an inactive gas and containing less than 4 ppm of oxygen or less than 500 ppb of moisture. An oxidized stainless steel characterized by comprising a stainless steel having a crystal grain number of 6 or above and, formed on the surface thereof, a passive oxide film based on chromium oxide, wherein the oxide film has a thickness of 5 nm or above and the atomic ratio of chromium to iron in the outermost layer of the film is 1 or above.
REFERENCES:
patent: 4266987 (1981-05-01), Wang
patent: 4548872 (1985-10-01), Lavezzari
patent: 4610798 (1986-09-01), Burkus
patent: 5188714 (1993-02-01), Davidson
patent: 5226968 (1993-07-01), Ohmi
patent: 5259935 (1993-11-01), Davidson
patent: 5580398 (1996-12-01), Ohmi
patent: 5817424 (1998-10-01), Ohmi
Speer Timothy
Stein Stephen
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