Method of nitriding nickel alloy

Details Method of nitriding nickel alloy Method of nitriding nickel alloy

1992-03-03

1993-10-12

Roy, Upendra

Metal treatment

Process of modifying or maintaining internal physical...

Carburizing or nitriding using externally supplied carbon or...

148231, 148234, 148237, C21D 100

Patent

active

052521451

ABSTRACT:
A method of nitriding nickel alloy comprising steps of holding nickel alloy in an atmosphere of fluorine- or fluoride-containing gas in a heated condition and holding the fluorinated nickel alloy in a nitriding atmosphere in a heated condition to provide the nickel alloy with improved surface hardness by forming a deep uniform nitrided layer on the surface of the nickel alloy.

REFERENCES:
patent: 1999757 (1935-04-01), Harsch
patent: 3129124 (1964-04-01), Barney
patent: 4004891 (1977-01-01), Lin et al.
patent: 4043839 (1977-08-01), Hartline et al.
patent: 4464207 (1984-08-01), Kindlimann
patent: 5013371 (1991-05-01), Tahara et al.
Frisk, K. Z. Metallkde, 82 (Feb. 1991) 108.
Patent Abstract of Japan, vol. 8, No. 98, (C-221) (1535) 9 May 1984 of JP-A-59 13 065 (Fujitsu) 23 Jan. 1984.
Frisk, K. Z. Metallkde, 82 (Jan. 1991) 59.

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