| 弥散强化Pt-10Rh合金高温微观组织结构研究 |
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| 引用本文： | 李凤,杨晓亮,唐会毅,吴保安,程小利,罗维凡,万伟建,席铭泽,王桂升.弥散强化Pt-10Rh合金高温微观组织结构研究[J].功能材料,2019,50(6):6052-6055. |
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| 作者姓名： | 李凤 杨晓亮 唐会毅 吴保安 程小利 罗维凡 万伟建 席铭泽 王桂升 |
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| 作者单位： | 重庆材料研究院有限公司,重庆 400707;国家仪表功能材料工程技术研究中心,重庆 400707;重庆市稀贵金属高效应用工程技术研究中心,重庆 400707;重庆材料研究院有限公司,重庆,400707 |
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| 基金项目： | 重庆市北碚区技术创新与应用示范产业资助项目;中国机械装备集团重点研发资助项目 |
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| 摘 要： | 用金相显微镜、扫描电镜观测普通Pt-10Rh合金和弥散强化Pt-10Rh合金的微观组织结构,结果表明,普通Pt-10Rh合金在高温下晶粒长大趋势明显,且高温持久性低,而弥散强化Pt-10Rh合金中有强化颗粒氧化锆的存在,能减少晶界缺陷,提高晶界结合力,降低晶界的扩散速度,减缓位错攀移,有效阻止晶粒长大和晶界的滑移,从而提高材料的强度和使用寿命。
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| 关 键 词： | 弥散强化 Pt-10Rh合金 位错 晶界滑移 氧化锆 |
Study on the microstructure of dispersion-strengthened Pt-10Rh alloys at high temperature |
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| LI Feng,YANG Xiaoliang,TANG Huiyi,WU Baoan,CHENG Xiaoli,LUO Weifan,WAN Weijian,XI Mingze,WANG Guisheng.Study on the microstructure of dispersion-strengthened Pt-10Rh alloys at high temperature[J].Journal of Functional Materials,2019,50(6):6052-6055. |
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| Authors: | LI Feng YANG Xiaoliang TANG Huiyi WU Baoan CHENG Xiaoli LUO Weifan WAN Weijian XI Mingze WANG Guisheng |
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| Affiliation: | (Chongqing Materials Research Institute Co. Ltd.,Chongqing 400707,China;National Instrument Functional Materials Engineering Technology Research Centers,Chongqing 400707,China;Chongqing Engineering Research Center of Rare and Precious Metals High Effective Application,Chongqing 400707,ChinaEffective Application,Chongqing 400707,China) |
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| Abstract: | The microstructure of Pt-10Rh alloys and dispersion-strengthened Pt-10Rh alloys were observed by metallographic microscope and SEM.The results show that the grain sizes of Pt-10Rh alloys grew heavily and they had low high temperature sustaining strength.But dispersion-strengthened Pt-10Rh alloys had distributed strengthened zirconia particles,which could reduce the defect of grain boundary,improve the bonding strength of grain boundary,reduce the diffusion rate of grain boundary,slow down dislocation climbing,and effectively prevent grain growth and grain boundary sliding,thus improving the strength and service life of the material. |
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| Keywords: | dispersion-strengthened Pt-10Rh alloy dislocation grain boundary sliding zirconia |
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