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

文献类型：期刊论文

作者Qiao, Yanxin2; Huang, Jie2; Huang, Ding2; Chen, Jian2; Liu, Wen2; Wang, Zhengbin1; Zheng Zhibin3
刊名JOURNAL OF CHEMISTRY
出版日期2020-08-03
卷号2020页码:11
ISSN号2090-9063
DOI10.1155/2020/1438473
通讯作者Qiao, Yanxin(yxqiao@just.edu.cn) ; Wang, Zhengbin(zbwang12s@imr.ac.cn)
英文摘要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
语种英语
出版者HINDAWI LTD
WOS记录号WOS:000562882700002
资助机构National Natural Science Foundation of China ; Natural Science Foundation of Jiangsu Province
源URL[http://ir.imr.ac.cn/handle/321006/140302]  
专题金属研究所_中国科学院金属研究所
通讯作者Qiao, Yanxin; Wang, Zhengbin
作者单位1.Chinese Acad Sci, Inst Met Res, CAS Key Lab Nucl Mat & Safety Assessment, Shenyang 110016, Peoples R China
2.Jiangsu Univ Sci & Technol, Sch Mat Sci & Engn, Zhenjiang 212003, Jiangsu, 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.

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来源：金属研究所

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