| Al2O3La2O3Y2O3/Cu复合材料的电弧侵蚀特性研究 |
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| 引用本文： | 王松,谢明,陈永泰,张吉明,王塞北.Al2O3La2O3Y2O3/Cu复合材料的电弧侵蚀特性研究[J].有色金属科学与工程,2014,5(4):28-31. |
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| 作者姓名： | 王松 谢明 陈永泰 张吉明 王塞北 |
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| 作者单位： | 1.昆明贵金属研究所稀贵金属综合利用新技术国家重点实验室，昆明 650106 |
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| 基金项目： | 国家自然科学基金资助项目51154015云南省科技创新团队资助项目2012HC027 |
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| 摘 要： | 采用喷射沉积和内氧化法制备出Al2O3La2O3Y2O3/Cu复合材料，研究该材料在直流20 V/20 A的工作条件下触点的电弧侵蚀特性，并与Al2O3/Cu材料进行了对比分析.利用电子天平、扫描电镜等方法分析电弧侵蚀后触点的质量变化和表面微观结构.结果表明，通过添加Y2O3、La2O3稀土氧化物颗粒，可有效降低触头材料的材料转移量.Al2O3La2O3Y2O3/Cu材料的抗熔焊性和抗烧损性优于Al2O3/Cu材料的性能.在直流阻性负载条件下Al2O3La2O3Y2O3/Cu阳极触头表面形成凹坑，阴极触头表面形成凸起，触点表面显示出浆糊状凝固物和喷发坑等电弧侵蚀形貌特征.
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| 关 键 词： | Al2O3La2O3Y2O3/Cu复合材料 电弧侵蚀 材料转移 表面形貌 |
| 收稿时间： | 2014-06-15 |
Arc erosion characteristics of Al2O3La2O3Y2O3/Cu composite |
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| Affiliation: | 1.State Key Laboratory of Advanced Technologies for Comprehensive Utilization of Platinum Metals, Kunming Institute of Precious Metals, Kunming 650106, China2.School of Materials Science and Engineering, Kunming University of Science and Technology, Kunming 650093, China |
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| Abstract: | Al2O(La2O3Y2O3/Cu composites are prepared by spray deposition and internal oxidation. The arc erosion phenomena of this composite contact in direct current state of 20 Y/20 A are studied, and comparative analysis with Al2O(/Cu composites are carried out. The changes of the contact material weighing and surface microstructure of the contact after arc erosion are investigated by electronic balance and SEM. It can be concluded that adding Y2O3, La2O3 rare earth oxide particles can effectively reduce the amount of material transfer of the contact. The welding resistance and anti-burning of Al2O(La2O3Y2O3/Cu composite are superior to that of Al2O(/Cu composite. Under direct current resistance load condition, the anode contact surface forms pits while the cathode contact surface forms projection, and there are two arc erosion morphological characters, i.e. starchiness coagulum and eruption pits on the contact surface of Al2O(La2O3Y2O3/Cu composite. |
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