Title:
METHOD FOR PREPARING REINFORCED PLATINUM MATERIAL
Document Type and Number:
WIPO Patent Application WO/2002/083961
Kind Code:
A1
Abstract:
A method for preparing a reinforced platinum material wherein a platinum alloy powder prepared by spraying a melt of the alloy is subjected to an oxidation treatment, the resultant powder is mixed with an organic solvent and subjected to a wet fine pulverization treatment, followed by a sintering treatment and a forging treatment, characterized in that the fine platinum alloy powder after the wet fine pulverization treatment is charged in a heat-resistant container and heated to 1200 to 1400 ° C under vacuum, to thereby subject it to a degassing treatment. A reinforced platinum material prepared by the method is free from the occurrence of swelling on the surface of the material even when subjected to a heat treatment at 1400 ° C or higher, contains a metal oxide such as zirconium oxide finely dispersed therein, and is markedly excellent in high temperature creep characteristics.
Inventors:
YAMASAKI HARUKI (JP)
Application Number:
PCT/JP2002/003663
Publication Date:
October 24, 2002
Filing Date:
April 12, 2002
Export Citation:
Assignee:
TANAKA PRECIOUS METAL IND (JP)
YAMASAKI HARUKI (JP)
YAMASAKI HARUKI (JP)
International Classes:
B22F1/12; B22F1/14; B22F1/145; C03B5/167; C22C1/05; C22C5/04; C22C32/00; (IPC1-7): C22C1/05; C22C5/04; B22F3/10
Foreign References:
| JPH08134511A | 1996-05-28 | |||
| JPH06336631A | 1994-12-06 | |||
| US3511640A | 1970-05-12 | |||
| US5623725A | 1997-04-22 | |||
| JPH04236701A | 1992-08-25 |
Other References:
See also references of EP 1380660A4
Attorney, Agent or Firm:
Tanaka, Daisuke (15-2 Hongo 1-chom, Bunkyo-ku Tokyo, JP)
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