Carbo-nitriding process for martensitic stainless steel and stainless steel article having improved corrosion resistance

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United States of America Patent

PATENT NO 11667999
APP PUB NO 20180320262A1
SERIAL NO

16039564

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Abstract

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A method for producing a case-hardened martensitic stainless steel article includes: providing an article comprised, at least in part, of a martensitic stainless steel, carburizing the article within a temperature range of 1625° F.-1680° F. (885° C.-916° C.), and then carbo-nitriding the article within a temperature range of 1575° F.-1625° F. (857° C.-885° C.). An article, such as a bearing ring, comprising such a case-hardened martensitic stainless steel is also disclosed.

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Patent Owner(s)

Patent OwnerAddress
AKTIEBOLAGET SKFGOTHENBURG GOTHENBURG VASTRA GOTALAND

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Bhattacharya, Rabi S Beavercreek, US 9 35
McCoy, Bryan A Jamestown, US 3 4
Otto, Frederick J Pleasant Prairie, US 2 3
Piazza, Timothy W Jamestown, US 3 7
Trivedi, Hitesh K Fairborn, US 3 9

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