文献类型：期刊文献

英文题名：Effect of spraying power on the microstructure and mechanical properties of supersonic plasma-sprayed Ni-based alloy coatings

作者：Zhang, X. C.[1,2];Xu, B. S.[3];Tu, S. T.[1];Xuan, F. Z.[1];Wang, H. D.[3];Wu, Y. X.[2]

机构：[1]E China Univ Sci & Technol, Sch Mech & Power Engn, Shanghai 200237, Peoples R China;[2]Shanghai Jiao Tong Univ, Shanghai Key Lab Mat Laser Proc & Modificat, Shanghai 200030, Peoples R China;[3]Natl Key Lab Remfg, Beijing 100072, Peoples R China

年份：2008

卷号：254

期号：20

起止页码：6318

外文期刊名：APPLIED SURFACE SCIENCE

收录：;EI(收录号：20083011401255);WOS:【SCI-EXPANDED(收录号:WOS:000257950100006)】；

语种：英文

外文关键词：plasma spraying; spraying power; porosity; mechanical properties; statistical analysis

摘要：The aim of this paper was to investigate the microstructure and mechanical properties of the supersonic plasma-sprayed Ni-Cr-B-Si-C coatings prepared at different spraying powers. The microstructure, phase composition, porosity, Young's modulus, micro-hardness, and residual stresses of the coatings were investigated and determined. The variations of the porosity, Young's modulus and micro-hardness of the coatings were evaluated by using statistical method. Results showed that the variations of porosity, Young's modulus and micro-hardness of the coatings followed the Weibull distributions. With increasing the porosity, the micro-hardness and Young's modulus of the coating decreased. The mean value of the Young's modulus of the coating calculated from Weibull plot was almost proportional to the square root of the micro-hardness of the coating. With increasing the power, Young's modulus of the coating increased, which, in turn, resulted in the increment of the residual stress at the coating surface. (c) 2008 Published by Elsevier B.V.