Comparative study of microstructural characteristics of electrospark and Nd : YAG laser epitaxially growing coatings

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	Comparative study of microstructural characteristics of electrospark and Nd : YAG laser epitaxially growing coatings
	Y. J. Xie; M. C. Wang; D. W. Huang
	2007
发表期刊	Applied Surface Science
ISSN	0169-4332
卷号	253 期号:14 页码:6149-6156
摘要	As low-heat input welding processes, electrospark deposition and pulsed Nd:YAG laser cladding can be commonly used to prepare epitaxially growing coatings. However, these two processes have quite different characteristics in the energy input, the amount of materials involved, and the temperature gradient, and hence might result in dissimilar microstructural characteristics. In this paper, a comparative study has been made between microstructural characteristics in epitaxial growth coatings prepared by electrospark deposition and pulsed Nd:YAG laser cladding. Some interesting results have been achieved. Firstly, epitaxial growth coatings can be commonly achieved by these two techniques. Secondly, microstructural morphologies of these two epitaxial growth coatings are obviously different, cellular columnar structure prevails in the electrospark coating while columnar dendritic structure occupies most of the laser coating thickness, more importantly, electrospark coating remains fully columnar in the whole layer whereas laser coating tends to change from columnar to equiaxed at the top of the layer. Thirdly, electrospark coating possesses finer and more homogeneous microstructure than laser coating. (C) 2007 Elsevier B.V. All rights reserved.
部门归属	chinese acad sci, inst met res, state key lab corros & protect, shenyang 110016, peoples r china. petrochina liaohe oilfield, petr transportat co, panjin 124010, peoples r china.;xie, yj (reprint author), chinese acad sci, inst met res, state key lab corros & protect, shenyang 110016, peoples r china;yjxie@imr.ac.cn
关键词	Electrospark Deposition Laser Cladding Epitaxial Growth Microstructural Characteristics Coating Energy Density Processes Ni-base Superalloy Single-crystal Deposition Cracking Alloy
URL	查看原文
WOS记录号	WOS:000246601200038
引用统计	被引频次：23[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/321006/33941
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	Y. J. Xie,M. C. Wang,D. W. Huang. Comparative study of microstructural characteristics of electrospark and Nd : YAG laser epitaxially growing coatings[J]. Applied Surface Science,2007,253(14):6149-6156.
APA	Y. J. Xie,M. C. Wang,&D. W. Huang.(2007).Comparative study of microstructural characteristics of electrospark and Nd : YAG laser epitaxially growing coatings.Applied Surface Science,253(14),6149-6156.
MLA	Y. J. Xie,et al."Comparative study of microstructural characteristics of electrospark and Nd : YAG laser epitaxially growing coatings".Applied Surface Science 253.14(2007):6149-6156.