Redistribution of SnO2 particles in Ag/SnO2 materials during rapid solidification

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	Redistribution of SnO2 particles in Ag/SnO2 materials during rapid solidification
	Q. B. Ye; Y. P. Wang
	2007
发表期刊	Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing
ISSN	0921-5093
卷号	449 页码:1045-1048
摘要	Melt spinning experiments were performed on Ag-12 wt.% SnO2 contact materials with and without CuO addition for the purpose of simulating the rapid solidification process of an instantaneously remelted thin surface layer during arcing. The microstructure of the rapidly solidified ribbons was investigated using optical and scanning electron microscopy, and compared with that of the samples subjected to arcing tests. The results evidenced a redistribution of the reinforcement SnO2 particles during rapid solidification as well as a strong dependence of it on the addition of a small amount of CuO to the starting materials. In CuO-free ribbons, much more of the SnO2 particles were confined at grain boundaries rather than engulfed in Ag matrix grains. In CuO-doped ribbons, however, the SnO2 particles were uniformly distributed both inside Ag-matrix grains and at grain boundaries. Additionally, short SnO2 rods were formed on the surfaces of the CuO-doped ribbons. Similar effects of the addition of CuO were noted for arc-tested samples. The results were discussed with respect to several models dealing with the particle-dendrite interaction during solidification. (c) 2006 Elsevier B.V. All rights reserved.
部门归属	chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china. xian jiaotong univ, xian 710049, peoples r china.;wang, yp (reprint author), chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china;ypwang@imr.ac.cn
关键词	Contact Materials Rapid Solidification Particle Redistribution Arc Erosion Behavior
URL	查看原文
WOS记录号	WOS:000245477800239
引用统计	被引频次：17[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/33992
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	Q. B. Ye,Y. P. Wang. Redistribution of SnO2 particles in Ag/SnO2 materials during rapid solidification[J]. Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,2007,449:1045-1048.
APA	Q. B. Ye,&Y. P. Wang.(2007).Redistribution of SnO2 particles in Ag/SnO2 materials during rapid solidification.Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,449,1045-1048.
MLA	Q. B. Ye,et al."Redistribution of SnO2 particles in Ag/SnO2 materials during rapid solidification".Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing 449(2007):1045-1048.