Effect of NiCr Clad BaF2 center dot CaF2 Addition on Wear Performance of Plasma Sprayed Chromium Carbide-Nichrome Coating

CORC > 过程工程研究所 > 中国科学院过程工程研究所 > 多相复杂系统国家重点实验室

	Effect of NiCr Clad BaF2 center dot CaF2 Addition on Wear Performance of Plasma Sprayed Chromium Carbide-Nichrome Coating
	Du, Lingzhong 1; Huang, Chuanbing 1; Zhang, Weigang 1; Zhang, Jingmin 2; Liu, Wei 1
刊名	JOURNAL OF THERMAL SPRAY TECHNOLOGY
	2010-03-01
卷号	19 期号:3 页码:551-557
关键词	metal-matrix composite solid lubricant coating sliding wear thermal spray coating wear testing
ISSN号	1059-9630
通讯作者	Du, LZ
英文摘要	NiCr 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.
WOS标题词	Science & Technology ; Technology
类目[WOS]	Materials Science, Coatings & Films
研究领域[WOS]	Materials Science
关键词[WOS]	CR3C2-NICR COATINGS ; HVOF
收录类别	SCI
语种	英语
WOS记录号	WOS:000274904200004
公开日期	2013-11-27
内容类型	期刊论文
版本	出版稿
源URL	[http://ir.ipe.ac.cn/handle/122111/6206]
专题	过程工程研究所_多相复杂系统国家重点实验室
作者单位	1.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
推荐引用方式 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.(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.