| 大变形Ag/Ni20纤维复合电接触材料电弧侵蚀及形貌特征 |
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| 引用本文： | 张昆华,管伟明,郭俊梅,宋修庆.大变形Ag/Ni20纤维复合电接触材料电弧侵蚀及形貌特征[J].稀有金属材料与工程,2011,40(5):853-857. |
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| 作者姓名： | 张昆华 管伟明 郭俊梅 宋修庆 |
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| 作者单位： | 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,云南,昆明,650106 |
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| 基金项目： | 云南省院所专项(2002KF2X-31)；云南省中青年学术技术带头人后备人才培养计划(2006Py01-42) |
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| 摘 要： | 采用包覆挤压、集束挤压、大变形冷拉拔等大变形技术制备出Ag/Ni20纤维复合电接触材料,研究该材料在直流条件下触点的电弧侵蚀,利用扫描电镜(SEM)、能谱(EDS)等方法分析电弧侵蚀后触点表面微观结构和元素分布,归纳出大变形Ag/Ni20纤维复合电接触材料具有浆糊状凝固物、珊瑚状结构、骨架结构、孔洞或气孔、裂纹等5种电弧侵蚀形貌特征。
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| 关 键 词： | 金属材料 大变形 Ag/Ni20 电接触材料 电弧侵蚀 表面形貌 |
| 收稿时间： | 2010/5/10 0:00:00 |
Arc Erosion and Morphological Characters of Ag/Ni20 Fiber Electrical Composites by Severe Plastic Deformation |
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| Zhang Kunhu,Guan Weiming,Guo Junmei and Guo Junmei.Arc Erosion and Morphological Characters of Ag/Ni20 Fiber Electrical Composites by Severe Plastic Deformation[J].Rare Metal Materials and Engineering,2011,40(5):853-857. |
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| Authors: | Zhang Kunhu Guan Weiming Guo Junmei and Guo Junmei |
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| Affiliation: | State Key Laboratory of Advanced Technologies for Comprehensive Utilization of Platinum Metal,;Kunming Institute of Precious Metals, Kunming 650106, China |
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| Abstract: | Ag/Ni20 fiber electrical composites were prepared by severe plastic deformation including coating extrusion, bunched extrusion, and drawing. The arc erosion phenomena of this composite contact in direct current state were studied. The microstructure and element distribution in contact surface after arc erosion were analyzed by SEM and EDS. It can be concluded that in Ag/Ni20 fiber electrical composites, there are five arc erosion morphological characters, i.e. starchiness coagulum, coral-like structure, framework structure, pores/air holes, and cracks |
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| Keywords: | metallic materials severe plastic deformation Ag/Ni20 electrical contact material arc erosion surface morphology |
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