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| Pt-25Rh-0.2La-0.2Ce合金的组织结构及性能研究 |
| Microstructure and Properties of Pt-25Rh-0.2La-0.2Ce Alloy |
| 投稿时间：2019-09-02 |
| DOI： |
| 中文关键词: 金属材料 PtRh合金 组织结构 性能 |
| 英文关键词: metal materials PtRh alloy microstructure properties |
| 基金项目:2019年云南省基础研究重点项目、云南省应用基础重点项目(2016FA053)、云南省重大科技新材料专项(2018ZE001) |
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| 中文摘要: |
| 采用真空电弧熔炼预合金化-高频熔炼方法制备Pt-25Rh-0.2La-0.2Ce合金。利用金相显微镜、扫描电子显微镜、透射电镜及电子拉伸试验机等，研究Pt-25Rh-0.2La-0.2Ce合金的显微组织结构、力学性能及高温抗氧化性能。结果表明，稀土的添加可有效细化合金的晶粒尺寸，提高合金的室温及高温力学性能，同时对合金的高温抗氧化性能无明显负面影响。 |
| 英文摘要: |
| Pt-25Rh-0.2La-0.2Ce alloy was prepared by vacuum arc melting pre-alloying and high frequency melting. Microstructure, mechanical properties and high temperature oxidation resistance of Pt-25Rh-0.2La-0.2Ce alloy were studied by means of metallographic microscope, scanning electron microscopy (SEM), transmission electron microscopy (TEM) and electronic tensile testing machine. The results showed that the addition of rare earth could effectively refine the grain size of the alloy, improve the mechanical properties at room temperature and high temperature, and have no obvious negative impact on the high temperature oxidation resistance of the alloy. |
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