Method of nitriding austenitic stainless steel products
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United States of America Patent
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Dec 27, 1994
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N/A
app pub date -
Feb 12, 1993
filing date -
Sep 16, 1992
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Abstract
A hard nitrided layer is formed on austenitic stainless steel by holding the austenitic stainless steel in a heated condition under a fluorine- or fluoride-containing atmosphere and then nitriding it so that a close uniform nitriding layer can be formed, resulting the remarkable improvement in the surface hardness of the above-mentioned austenitic stainless steel. The temperature in the above-mentioned nitriding treatment is set below 450.degree. C. so that high anti-corrosion property, originally inherent in austenitic stainless steel, can be retained without deterioration.
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