Effect of Main Arc Current on Microstructure and Cavitation Resistance of NiCrBSi-WC Alloy Coating Prepared by Plasma Transfer Arc Welding

doi:10.1007/s11666-024-01872-7

IMR OpenIR

	Effect of Main Arc Current on Microstructure and Cavitation Resistance of NiCrBSi-WC Alloy Coating Prepared by Plasma Transfer Arc Welding
	Zhou, G. X.1; Zhao, T.1; Wang, M. S.2; Wu, C. L.1; Zhang, S.1; Zhang, C. H.1; Chen, H. T.3; Chen, J.3
通讯作者	Wang, M. S.(mswang@imr.ac.cn) ; Zhang, C. H.(zhangch5858@126.com)
	2024-11-13
发表期刊	JOURNAL OF THERMAL SPRAY TECHNOLOGY
ISSN	1059-9630
页码	23
摘要	The effect of main arc current on the microstructure, electrochemical properties, and cavitation erosion resistance of NiCrBSi-WC alloy coating by plasma transfer arc welding was studied. The results show that the coating is composed of gamma-Ni, WC, W2C, Cr7C3, CrB, and FeNi3 phases. With the decrease in main arc current, the microstructure is gradually refined, and the grain size and Schmidt factor are reduced, which are 12.62 +/- 2.6 mu m and 0.42, respectively. At the same time, the coating has a strong gamma-Ni texture in (111) orientation. The refinement of the coating microstructure and the existence of surface passivation film slow down the electrochemical corrosion in boric acid solution and effectively improve the corrosion resistance of the coating. The increase in microhardness is due to the second phase strengthening mechanism of WC and Cr7C3, and the maximum value can reach 663.5 +/- 6.2 HV. The damage and repair process of the passive film of the coating was studied by the synergistic method of cavitation erosion. With the increase in the main arc current, the average corrosion depth rate (MDER) of the coating can be reduced to 1.02 +/- 0.03 mu m/h, which is due to the improvement of the independent repair ability of the passive film, and the microhardness test results are inversely related to MDER. According to the above analysis results, the synergistic mechanism of cavitation corrosion of NiCrBSi-WC alloy coating is put forward. NiCrBSi-WC alloy coating prepared by plasma transfer arc welding technology in this study has great application prospects in the nuclear industry.
关键词	cavitation erosion electrochemical corrosion NiCrBSi-WC alloy PTAW
资助者	National Key Research and Development Program of China ; Science and Technology Research Project of Liaoning Province ; Shenyang Science and Technology Funded Project
DOI	10.1007/s11666-024-01872-7
收录类别	SCI
语种	英语
资助项目	National Key Research and Development Program of China[2023YFB4606605] ; Science and Technology Research Project of Liaoning Province[LJKQZ2021050] ; Shenyang Science and Technology Funded Project[22-101-0-16] ; Shenyang Science and Technology Funded Project[19-109-1-03]
WOS研究方向	Materials Science
WOS类目	Materials Science, Coatings & Films
WOS记录号	WOS:001353814800001
出版者	SPRINGER
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/191379
专题	中国科学院金属研究所
通讯作者	Wang, M. S.; Zhang, C. H.
作者单位	1.Shenyang Univ Technol, Sch Mat Sci & Engn, Shenyang 110870, Liaoning, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang 110072, Liaoning, Peoples R China 3.Shenyang Dalu Laser Technol Co Ltd, Shenyang 110136, Liaoning, Peoples R China
推荐引用方式 GB/T 7714	Zhou, G. X.,Zhao, T.,Wang, M. S.,et al. Effect of Main Arc Current on Microstructure and Cavitation Resistance of NiCrBSi-WC Alloy Coating Prepared by Plasma Transfer Arc Welding[J]. JOURNAL OF THERMAL SPRAY TECHNOLOGY,2024:23.
APA	Zhou, G. X..,Zhao, T..,Wang, M. S..,Wu, C. L..,Zhang, S..,...&Chen, J..(2024).Effect of Main Arc Current on Microstructure and Cavitation Resistance of NiCrBSi-WC Alloy Coating Prepared by Plasma Transfer Arc Welding.JOURNAL OF THERMAL SPRAY TECHNOLOGY,23.
MLA	Zhou, G. X.,et al."Effect of Main Arc Current on Microstructure and Cavitation Resistance of NiCrBSi-WC Alloy Coating Prepared by Plasma Transfer Arc Welding".JOURNAL OF THERMAL SPRAY TECHNOLOGY (2024):23.