Title: Method of surface hardening stainless steel parts

Abstract: A method of surface hardening stainless steel parts for increasing their wear and fatigue resistance comprises (a) subjecting the surface of the stainless steel part to a salt bath containing, by weight, up to 0.5% sulphur, 4-30% of a cyanide, and 10-30% of a cyanate, for a time period of a few minutes to two hours, at a temperature of 540.degree.-600.degree. C.; and (b) then subjecting the stainless steel part to a nitriding process.

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Inventors: Blas, Amos (Ramat Gan, IL, US)
Rabin, Baruch (Rechovot, IL, US)

Application Number: 926434
Filing Date: 1978-07-20
Publication_date: 1980-01-22
Assignee: Israel Aircraft Industries Ltd. (Ben Gurion Int'l Airport, Ltd., IL)
Primary Class(es): 148/228
Other Classes:
US Patent Ref:

3753799	Aug, 1973	Wells	148/15.
4006043	Feb, 1977	Gaucher et al.	148/15.
4019928	Apr, 1977	Beyer et al.	148/15.

Other Refs:
Primary Examiner: Rutledge, L. Dewayne
Assistant Examiner: Sheehan, John P.
Attorney: Barish; Benjamin J.