Method for treating sintered alloy

Details Method for treating sintered alloy Method for treating sintered alloy

1992-03-30

1994-02-22

Wyszomierski, George

Metal treatment

Process of modifying or maintaining internal physical...

Treating consolidated metal powder, per se

148285, 148287, C23C 816

Patent

active

052883450

ABSTRACT:
A method for treating sintered alloy is disclosed by exposing a portion of the sintered alloy at a temperature ranging from about 800.degree. C. to about 1300.degree. C. under an atmosphere that contains an amount of water vapor corresponding to dew points ranging from about 30.degree. C. to about 60.degree. C. The method according to the present invention gives sintered alloy with a satisfactory protective layer that excels in smoothness and uniformity, and that prevents abnormal oxidation. Moreover, the method is especially useful to a sintered alloy having a complex structure and/or thin walls, such as a honeycomb structure.

REFERENCES:
patent: 4364780 (1982-12-01), Blanken
patent: 4915751 (1990-04-01), Vaneman et al.
Patent Abstracts of Japan, unexamined applications C field, vol. 11, No. 106, Apr. 3, 1987 The Patent Office Japanese Government p. 15 C 414, Kokai No. 61-253358.

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