Method for treating sintered alloy
AssigneeNGK Insulators, Ltd.
InventorsTsuneaki Ohhashi, Nobuo Tsuno, Takashi Harada
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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.
Claims5
A method for treating sintered alloy, comprising:
- exposing at least a portion of a sintered alloy containing aluminum to a temperature within a range from about 800.degree. C. to about 1,300.degree. C. under an atmosphere which contains an amount of water vapor corresponding to a dew point within the range of about 30.degree. C. to about 60.degree. C.
Dependencies are inferred from the claim text.