Effects of Laser Scanning Speed on Microstructure, Microhardness, and Corrosion Behavior of Laser Cladding Ni45 Coatings

doi:10.1155/2020/1438473

IMR OpenIR

	Effects of Laser Scanning Speed on Microstructure, Microhardness, and Corrosion Behavior of Laser Cladding Ni45 Coatings
	Qiao, Yanxin 1; Huang, Jie 1; Huang, Ding 1; Chen, Jian 1; Liu, Wen 1; Wang, Zhengbin 2; Zheng Zhibin 3
通讯作者	Qiao, Yanxin(yxqiao@just.edu.cn) ; Wang, Zhengbin(zbwang12s@imr.ac.cn)
	2020-08-03
发表期刊	JOURNAL OF CHEMISTRY
ISSN	2090-9063
卷号	2020 页码:11
摘要	The effects of laser scanning speed on the microstructure, microhardness, and corrosion behavior of Ni45 coatings were investigated by using optical microscopy (OM), scanning electron microscopy (SEM), X-ray diffraction (XRD), microhardness, and electrochemical measurements. The results showed that increasing laser scanning speed promotes the transformation from planar crystals to dendrites and refines the grains concurrently. The gamma-(Ni, Fe), FeNi3, and M-23(C,B)(6)are identified as the primary phase composition in the Ni45 coatings regardless of the laser scanning speed. Thereinto, the formation and growth of M-23(C,B)(6)precipitates can be inhibited with increasing laser scanning speed due to the higher cooling rate, which affects the microhardness distribution and corrosion resistance of the coating. On the one hand, the microhardness of the whole coating presents a downtrend with increasing laser scanning speed due to the reduction of M-23(C,B)(6)phase. On the other hand, the corrosion resistance in 0.5 M NaCl solution is improved to some extent at higher laser scanning speed because the less precipitation of M-23(C,B)(6)reduces the depletion of Cr around the precipitates. In contrast, all the coatings exhibit undifferentiated but poor corrosion resistance in the highly corrosive 0.5 M NaCl + 0.5 M H(2)SO(4)solution.
资助者	National Natural Science Foundation of China ; Natural Science Foundation of Jiangsu Province
DOI	10.1155/2020/1438473
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[51801218] ; National Natural Science Foundation of China[51911530211] ; National Natural Science Foundation of China[51905110] ; Natural Science Foundation of Jiangsu Province[BK20191458]
WOS研究方向	Chemistry
WOS类目	Chemistry, Multidisciplinary
WOS记录号	WOS:000562882700002
出版者	HINDAWI LTD
引用统计	被引频次：34[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/321006/140303
专题	中国科学院金属研究所
通讯作者	Qiao, Yanxin; Wang, Zhengbin
作者单位	1.Jiangsu Univ Sci & Technol, Sch Mat Sci & Engn, Zhenjiang 212003, Jiangsu, Peoples R China 2.Chinese Acad Sci, Inst Met Res, CAS Key Lab Nucl Mat & Safety Assessment, Shenyang 110016, Peoples R China 3.Guangdong Inst Mat & Proc, Guangdong Key Lab Technol & Applicat Met Tougheni, Guangzhou 510650, Peoples R China
推荐引用方式 GB/T 7714	Qiao, Yanxin,Huang, Jie,Huang, Ding,et al. Effects of Laser Scanning Speed on Microstructure, Microhardness, and Corrosion Behavior of Laser Cladding Ni45 Coatings[J]. JOURNAL OF CHEMISTRY,2020,2020:11.
APA	Qiao, Yanxin.,Huang, Jie.,Huang, Ding.,Chen, Jian.,Liu, Wen.,...&Zheng Zhibin.(2020).Effects of Laser Scanning Speed on Microstructure, Microhardness, and Corrosion Behavior of Laser Cladding Ni45 Coatings.JOURNAL OF CHEMISTRY,2020,11.
MLA	Qiao, Yanxin,et al."Effects of Laser Scanning Speed on Microstructure, Microhardness, and Corrosion Behavior of Laser Cladding Ni45 Coatings".JOURNAL OF CHEMISTRY 2020(2020):11.