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Effect of NiCr Clad BaF2 center dot CaF2 Addition on Wear Performance of Plasma Sprayed Chromium Carbide-Nichrome Coating
Du, Lingzhong1; Huang, Chuanbing1; Zhang, Weigang1; Zhang, Jingmin2; Liu, Wei1; Du, LZ
2010-03-01
Source PublicationJOURNAL OF THERMAL SPRAY TECHNOLOGY
ISSN1059-9630
Volume19Issue:3Pages:551-557
AbstractNiCr clad BaF2 center dot CaF2 fluoride eutectic powders were added into chromium carbide-nichrome feedstock to improve the tribological properties of NiCr-Cr3C2 coating, and the structures, mechanical, and ball-on-disk sliding wear performance of the coating were characterized. The results show that NiCr cladding can effectively decrease the density and thermophysical difference between the feedstock components, while alleviate the decarburization and oxidization of the constituent phases, and form the coating with a uniform and dense microstructure. However, the addition of BaF2 center dot CaF2 has a negative effect on mechanical properties of the coating. When the temperature reaches 500 A degrees C, the BaF2 center dot CaF2 eutectic is soften by the heat and smeared by the counterpart, thus the low shear stress lubricating film forms between the contact surface, that improves the tribological properties dramatically. At this temperature, the dominant wear mechanisms also change from splats spallation and abrasive wear at room temperature to plastic deformation and plawing by the counterpart. Within the temperature range from 600 to 800 A degrees C, the friction coefficient, the wear rates of NiCr/Cr3C2-10% BaF2 center dot CaF2 coating and its coupled Si3N4 ball are 20%, 40%, and 75% lower than those of the NiCr/Cr3C2 coating, respectively. The NiCr/Cr3C2-BaF2 center dot CaF2 coating shows superior wear performance to the NiCr/Cr3C2 coating without lubricant additive.
KeywordMetal-matrix Composite Solid Lubricant Coating Sliding Wear Thermal Spray Coating Wear Testing
SubtypeArticle
WOS HeadingsScience & Technology ; Technology
DOI10.1007/s11666-009-9462-7
Indexed BySCI
Language英语
WOS KeywordCR3C2-NICR COATINGS ; HVOF
WOS Research AreaMaterials Science
WOS SubjectMaterials Science, Coatings & Films
WOS IDWOS:000274904200004
Citation statistics
Cited Times:13[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Version出版稿
Identifierhttp://ir.ipe.ac.cn/handle/122111/6206
Collection多相复杂系统国家重点实验室
Corresponding AuthorDu, LZ
Affiliation1.Chinese Acad Sci, State Key Lab Multiphase Complex Syst, Inst Proc Engn, Beijing 100080, Peoples R China
2.China Iron & Steel Res Inst Grp, Beijing 100081, Peoples R China
Recommended Citation
GB/T 7714
Du, Lingzhong,Huang, Chuanbing,Zhang, Weigang,et al. Effect of NiCr Clad BaF2 center dot CaF2 Addition on Wear Performance of Plasma Sprayed Chromium Carbide-Nichrome Coating[J]. JOURNAL OF THERMAL SPRAY TECHNOLOGY,2010,19(3):551-557.
APA Du, Lingzhong,Huang, Chuanbing,Zhang, Weigang,Zhang, Jingmin,Liu, Wei,&Du, LZ.(2010).Effect of NiCr Clad BaF2 center dot CaF2 Addition on Wear Performance of Plasma Sprayed Chromium Carbide-Nichrome Coating.JOURNAL OF THERMAL SPRAY TECHNOLOGY,19(3),551-557.
MLA Du, Lingzhong,et al."Effect of NiCr Clad BaF2 center dot CaF2 Addition on Wear Performance of Plasma Sprayed Chromium Carbide-Nichrome Coating".JOURNAL OF THERMAL SPRAY TECHNOLOGY 19.3(2010):551-557.
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