Claims
- 1. A method of producing an agglomerated molybdenum plasma spray powder with a controlled level of oxygen, said method comprising:
- a) milling molybdenum dioxide powder to a particle size less than about 10 micrometers;
- b) forming a slurry consisting of said milled molybdenum dioxide powder and ammonium paramolybdate crystals dissolved in water;
- c) forming a uniform mixture of agglomerated powders consisting of molybdenum dioxide and ammonium paramolybdate by drying said slurry, wherein the mixture has an oxygen content of greater than about 25% by weight; and
- d) reducing said mixture in a rotating bed furnace in a hydrogen atmosphere at a temperature of from about 700.degree. C. to about 1000.degree. C. for a sufficient time to remove a portion of the oxygen therefrom and form reduced molybdenum powder agglomerates having an oxygen content of from about 7% to about 10% by weight.
Parent Case Info
This is a continuation of copending application Ser. No. 07/515,535, filed on Apr. 13, 1990, now abandoned which is a continuation of copending application Ser. No. 07/326,826, filed on Mar. 21, 1989, now abandoned.
US Referenced Citations (13)
Foreign Referenced Citations (2)
Number |
Date |
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561559 |
Aug 1958 |
CAX |
292798 |
Nov 1988 |
EPX |
Continuations (2)
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Number |
Date |
Country |
Parent |
515535 |
Apr 1990 |
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Parent |
326826 |
Mar 1989 |
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