Process of producing nitrided and hardened nickel alloy products

Details Process of producing nitrided and hardened nickel alloy products Process of producing nitrided and hardened nickel alloy products

1995-04-27

1996-04-09

Yee, Deborah

Metal treatment

Process of modifying or maintaining internal physical...

Carburizing or nitriding using externally supplied carbon or...

148221, 148238, C23C 824

Patent

active

055057918

ABSTRACT:
The present invention relates to nickel alloy products with their surfaces nitrided and hardened which are formed by pressure casting nickel alloy material, and nitrided and hardened layers are formed in surface layers. Since the nitrided and hardened surfaces of the nickel alloy products according to the invention have much better corrosion resistance than iron products have, anticorrosion treatment such as plating is not required, and rich lubricity and excellent tightening property can be obtained without having seizure and scuffing phenomena.

REFERENCES:
patent: 4588450 (1986-05-01), Purohit
patent: 5114500 (1992-05-01), Tahara et al.
patent: 5403409 (1995-04-01), Tahara et al.

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