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Effects of Laser Scanning Speed on Microstructure, Microhardness, and Corrosion Behavior of Laser Cladding Ni45 Coatings
Qiao, Yanxin1; Huang, Jie1; Huang, Ding1; Chen, Jian1; Liu, Wen1; Wang, Zhengbin2; Zheng Zhibin3
Corresponding AuthorQiao, Yanxin(yxqiao@just.edu.cn) ; Wang, Zhengbin(zbwang12s@imr.ac.cn)
2020-08-03
Source PublicationJOURNAL OF CHEMISTRY
ISSN2090-9063
Volume2020Pages:11
AbstractThe 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.
Funding OrganizationNational Natural Science Foundation of China ; Natural Science Foundation of Jiangsu Province
DOI10.1155/2020/1438473
Indexed BySCI
Language英语
Funding ProjectNational 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 Research AreaChemistry
WOS SubjectChemistry, Multidisciplinary
WOS IDWOS:000562882700002
PublisherHINDAWI LTD
Citation statistics
Cited Times:19[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/140303
Collection中国科学院金属研究所
Corresponding AuthorQiao, Yanxin; Wang, Zhengbin
Affiliation1.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
Recommended Citation
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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