C - Chemistry – Metallurgy – 21 – D
Patent
C - Chemistry, Metallurgy
21
D
C21D 1/76 (2006.01) C23C 8/20 (2006.01) C23C 8/22 (2006.01) C23C 8/30 (2006.01) C23C 8/32 (2006.01)
Patent
CA 2324943
The invention concerns a method for carburizing or carbonitriding metal or metal alloy parts, which consists in contacting the parts, for at least a carbon-enriching phase, with an enriching atmosphere comprising hydrogen and carbon monoxide, the atmosphere CO/H¿2? ratio being different by 1/2.
L'invention concerne un procédé de cémentation ou de carbonitruration de pièces à base de métal ou alliage métallique, selon lequel on met en contact les pièces, durant au moins une phase d'enrichissement en carbone, avec une atmosphère d'enrichissement comportant de l'hydrogène et du monoxyde de carbone, le rapport CO/H2 de l'atmosphère étant différent de 1/2.
Buffin Meryem
Domergue Didier
Sindzingre Thierry
L'air Liquide Societe Anonyme Pour L'etude Et L'exploitation Des Proced Es Geo
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
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