Method of producing oxide surface layers on metals and alloys

Details Method of producing oxide surface layers on metals and alloys Method of producing oxide surface layers on metals and alloys

1996-11-07

1998-04-21

Silverberg, Sam

Metal treatment

Process of modifying or maintaining internal physical...

Processes of coating utilizing a reactive composition which...

148284, 148277, 148280, 148286, 427360, C23C 816

Patent

active

057413720

ABSTRACT:
A method of producing oxide surface layers on compact and sintered metals and alloys has the steps of delivering a metal or alloy into a working chamber preheated to temperature from 200.degree. C. to temperature below its melting point so that the metal or alloy is heated in the working chamber in waterless atmosphere to a temperature from 100.degree. C. to below a melting point of the metal or alloy in waterless atmosphere at atmospheric, reduced or increased pressure, and then introducing into the working chamber a water solution of substances which contain alloying elements so that water steam and volatile oxides of the alloying elements are formed directly into the working chamber interact with a surface of the metal or alloy to produce an alloyed surface layer of the metal or alloy.

REFERENCES:
patent: 2862842 (1958-12-01), Bernick
patent: 5413642 (1995-05-01), Alger

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