Platinum material reinforced by oxide-dispersion and process for producing the same
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United States of America Patent
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Jan 28, 2003
Grant Date -
Aug 22, 2002
app pub date -
Feb 22, 2002
filing date -
Jun 28, 2000
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Abstract
The present invention is aimed at providing a platinum material in which creep strength is elevated by improving a metal grain shape in an oxide-dispersion strengthened platinum material in which zirconium oxide is dispersed, and providing a process for producing the platinum material. The present invention provides an oxide-dispersion strengthened platinum material in which zirconium oxide is dispersed in platinum and which can be obtained through rolling and thermal recrystallization, in which platinum grains constituting the platinum material have an average grain size in a rolling direction in the range of 200 to 1500 .mu.m and an average grain aspect ratio of 20 or more.
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