Material for use in an apparatus contacting organic amines

Details Material for use in an apparatus contacting organic amines Material for use in an apparatus contacting organic amines

1997-07-07

2000-12-05

Sheehan, John

Stock material or miscellaneous articles

Composite

Of metal

148606, 148286, B32B 1504

Patent

active

061564400

ABSTRACT:
A treated stainless steel is used as the material of construction for parts of an apparatus exposed to an organic amine. The stainless steel is treated by cleaning the stainless steel, forming a colored oxide film on the surface of the cleaned stainless steel by heating the cleaned stainless steel in an oxidizing atmosphere, and removing a portion of the colored oxide film to expose a passivating oxide film.

REFERENCES:
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patent: 4364900 (1982-12-01), Burrill
patent: 4518440 (1985-05-01), Philips, Jr.
patent: 4636266 (1987-01-01), Asay
patent: 5139623 (1992-08-01), Ohmi et al.
patent: 5226968 (1993-07-01), Ohmi et al.
Merriman, A.D., "A Dictionary of Metallurgy", MacDonald and Evans Ltd, London, p. 338, 1958.

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