Powder metallurgy processes – Powder metallurgy processes with heating or sintering – Post sintering operation
Reexamination Certificate
2007-05-15
2007-05-15
King, Roy (Department: 1742)
Powder metallurgy processes
Powder metallurgy processes with heating or sintering
Post sintering operation
C419S032000
Reexamination Certificate
active
10276322
ABSTRACT:
The present invention provides a method in which a strengthened platinum material can be produced, in which no blisters occur on the surface of the material even after heat treatment of 1,400° C. or higher and a metal oxide such as zirconium oxide is finely dispersed, and which has excellent high-temperature creep properties, when the strengthened platinum material is produced using a melt-sprayed platinum alloy powder. The method for producing a strengthened platinum material includes oxidizing a platinum alloy powder obtained by melt-spray, wet-milling the platinum alloy powder by adding an organic solvent, sintering, and forging, wherein the wet-milled platinum alloy fine powder is charged into a heat resistant container and heated to 1,200 to 1,400° C. in a vacuum atmosphere to be subjected to degassing.
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Machine translation of JP 06-336631 into English, patent publication date Jun. 12, 1994, machine translation date Oct. 13, 2006.
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King Roy
McNelis Kathleen
Rothwell Figg Ernst & Manbeck P.C.
Tanaka Kikinzoku Kogyo K.K.
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