Manganese oxide coated nickel base construction parts for medium

Details Manganese oxide coated nickel base construction parts for medium Manganese oxide coated nickel base construction parts for medium

1985-09-10

1986-07-29

O'Keefe, Veronica

Metal treatment

Compositions

Heat treating

148 115N, 148409, 148410, 148427, 148 6, 148 63, 138177, 165177, C23F 702

Patent

active

046029680

ABSTRACT:
There are described construction parts for gaseous hydrogen containing media which construction parts are made of a nickel alloy containing 40 to 70% nickel, 15 to 30% chromium, 0 to 20% cobalt, 5 to 10% molybdenum, and 0 to 20% iron and which construction parts have optimum hydrogen permeation prevention properties. For this purpose, the alloys contain 0.5 to 0.8% manganese and the parts are provided with a 1 to 10 .mu.m thick oxide coating by treating at a temperature of 850.degree. to 1000.degree. C. in an oxidizing atmosphere.

REFERENCES:
patent: 4031921 (1977-06-01), Maroni et al.
patent: 4050250 (1977-09-01), Davis
patent: 4129464 (1978-12-01), Matthews et al.
patent: 4478648 (1984-10-01), Zeilinger et al.
patent: 4555275 (1985-11-01), Tobin

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