Chemical activation of self-passivating metals

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United States of America

PATENT NO 12129556
APP PUB NO 20210172046A1
SERIAL NO

17112076

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Abstract

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A method for treating a workpiece made from a self-passivating metal and having a Beilby layer is disclosed. The method comprises exposing the workpiece to the vapors produced by heating a reagent having a guanidine [HNC(NH2)2] moiety and complexed with HCl to activate the workpiece for low temperature interstitial surface hardening.

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Patent Owner(s)

Patent OwnerAddress
SWAGELOK COMPANY29500 SOLON ROAD SOLON OH 44139

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Illing, Cyprian Adair William Cleveland Heights, US 6 3
Johns, Todd Solon, US 4 2
Semkow, Christina University Heights, US 9 15
Williams, Peter C Cleveland Heights, US 193 3596

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