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High-Temperature Solid Lubricant Coating by Plasma Spraying Using Metal-Metal Clad Powders
Zhang, Tiantian1,2; Lan, Hao1; Yu, Shouquan1; Huang, Chuanbing1; Du, Lingzhong1; Zhang, Weigang1

NiCr/Ag-Mo composite coating was fabricated by atmospheric plasma spray technology using clad powders as the feedstock. Its tribological properties at variable temperature were evaluated using a ball-on-disk high-temperature tribometer in air. The results showed that compared with NiCr, the NiCr/Ag-Mo composite coating exhibited better lubrication effect and higher wear resistance at all test temperatures, especially above 600 A degrees C. At 800 A degrees C, NiCr/Ag-Mo composite coating showed the lowest friction coefficient of about 0.2 and its corresponding wear rate reached 2.5 x 10(-5) mm(3)/Nm. Characterizations of NiCr/Ag-Mo composite coating revealed that at temperatures below 400 A degrees C, Ag was smeared and spread onto the wear surface, reducing the friction and wear. At temperature above 500 A degrees C, the Ag2MoO4 lubrication film formed by tribo-oxidation significantly improved the coating's lubrication effect and wear resistance.

KeywordAtmospheric Plasma Spray Clad Powder Silver Molybdate Solid Lubricant Coating
WOS HeadingsScience & Technology ; Technology
Indexed BySCI
WOS Keyword800 Degrees-c ; Tribological Properties ; Nanocomposite Coatings ; Elevated-temperatures ; Composite Coatings ; Wear Properties ; Friction ; Ag ; Mechanisms ; Environments
WOS Research AreaMaterials Science
WOS SubjectMaterials Science, Coatings & Films
Funding OrganizationNational Natural Science Foundation of China(51471159 ; Natural Science Foundation of Jiangsu Province, China(BK20140476) ; 51671180)
WOS IDWOS:000407335200022
Citation statistics
Document Type期刊论文
Affiliation1.Chinese Acad Sci, Inst Proc Engn, Lab Particle Sci & Engn, State Key Lab Multiphase Complex Syst, 1 Bei Er Jie, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, 19A Yuquan Rd, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Zhang, Tiantian,Lan, Hao,Yu, Shouquan,et al. High-Temperature Solid Lubricant Coating by Plasma Spraying Using Metal-Metal Clad Powders[J]. JOURNAL OF THERMAL SPRAY TECHNOLOGY,2017,26(6):1268-1278.
APA Zhang, Tiantian,Lan, Hao,Yu, Shouquan,Huang, Chuanbing,Du, Lingzhong,&Zhang, Weigang.(2017).High-Temperature Solid Lubricant Coating by Plasma Spraying Using Metal-Metal Clad Powders.JOURNAL OF THERMAL SPRAY TECHNOLOGY,26(6),1268-1278.
MLA Zhang, Tiantian,et al."High-Temperature Solid Lubricant Coating by Plasma Spraying Using Metal-Metal Clad Powders".JOURNAL OF THERMAL SPRAY TECHNOLOGY 26.6(2017):1268-1278.
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