C - Chemistry – Metallurgy – 23 – C
Patent
C - Chemistry, Metallurgy
23
C
C23C 8/10 (2006.01) C23C 8/02 (2006.01) C23C 22/50 (2006.01) C25F 3/24 (2006.01)
Patent
CA 2304436
An austenitic stainless steel article, preferably in the form of a tubing. The article has a passivated surface layer, which in the case of a tubing is on the interior surface of the tubing. The passivated surface layer has an oxide component having Fe2O3 and Cr2O3 and a metal component of Fe with zero valence and Cr with zero valence. The ratio of the oxide component to the metal component is in excess of 8:1.
Crucible Materials Corporation
Riches Mckenzie & Herbert Llp
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