| 摘要 |
PURPOSE: A method for preparing oxide dispersion strengthened platinum-rhodium alloy is provided to reduce the time for preparing platinum-rhodium powder by employing a dry process using plasma. CONSTITUTION: A method for preparing oxide dispersion strengthened platinum-rhodium alloy comprises the steps of: making alloy ingot for platinum-rhodium-oxide by adding rhodium and alloy elements for oxide to platinum(S10), processing the alloy ingot with plasma to obtain alloy powder for platinum-rhodium-oxide(S20), oxidizing the alloy powder to make a molded boxy(S30), compacting the molded body under high pressure to improve density(S40), and completing oxide dispersion strengthened platinum-rhodium alloy through post processing including hot working, cold working, and recrystallization(S50). [Reference numerals] (S10) Alloy ingot for platinum-rhodium-oxide(alloy elements for oxidation: one of Zr, Sm, Y, Eu, and Hf); (S20) Preparing alloy powder for platinum-rhodium-oxide using plasma; (S30) Making a molded product with an oxidizing process(elements for oxide); (S40) Hi-temperature compression molding(HP,HIP); (S50) Hot working→cold working→recrystallization
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