Method of case-hardening shaped object

Details Method of case-hardening shaped object Method of case-hardening shaped object

1995-10-27

1998-01-06

Silverberg, Sam

Metal treatment

Process of modifying or maintaining internal physical...

Carburizing or nitriding using externally supplied carbon or...

427226, 427399, C23C 1400

Patent

active

057049947

ABSTRACT:
A shaped object with a roughened surface is immersed in an aqueous solution of a metal salt and/or a solution of an organic metal. After the shaped object is dried, it is heated to form a metal-diffused layer in the shaped object and a ceramic surface layer on the shaped object. The ceramic surface layer has a large hardness, and is prevented from peeling off.

REFERENCES:
patent: 2693431 (1954-11-01), Williams
patent: 4066821 (1978-01-01), Cook
patent: 5415704 (1995-05-01), Davidson

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