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	Microstructure, mechanical and tribological characteristics of plasma, detonation gun and HVOF sprayed NiCr/Cr3C2-BaF2 center dot CaF2 coatings
	Huang, C. B.; Du, L. Z.; Zhang, W. G.
刊名	SURFACE ENGINEERING
	2011-11-01
卷号	27期号:10页码:762-769
关键词	Thermal spray Hard coating Solid lubrication Mechanical properties Wear
ISSN号	0267-0844
其他题名	Surf. Eng.
中文摘要	The microstructure, mechanical properties and tribological behaviour of NiCr/Cr3C2-BaF2 center dot CaF2 composite coatings prepared with atmospheric plasma spraying, detonation gun spraying (DS) and high velocity oxyfuel spraying (HVOF) technologies were systematically investigated. X-ray diffraction and transmission electron microscopy analyses showed that the main phases of the three kinds of NiCr/Cr3C2-BaF2 center dot CaF2 coatings were mainly consistent with the designed feedstock powders. The three kinds of NiCr/Cr3C2-BaF2 center dot CaF2 coatings have similar and high microhardness. The HVOF and DS NiCr/Cr3C2-BaF2 center dot CaF2 coatings have lower porosity and higher adhesive strength in comparison to the plasma sprayed NiCr/Cr3C2-BaF2 center dot CaF2 coating. The friction coefficients of the HVOF and DS coatings were lower than that of the plasma sprayed coating, and the HVOF and DS coatings showed better wear resistance. The lower friction coefficients and wear rates of the three coatings and coupled Si3N4 balls at elevated temperatures were attributed to the formation of a compact BaF2 center dot CaF2 eutectic lubricating layer on the worn surface.
英文摘要	The microstructure, mechanical properties and tribological behaviour of NiCr/Cr3C2-BaF2 center dot CaF2 composite coatings prepared with atmospheric plasma spraying, detonation gun spraying (DS) and high velocity oxyfuel spraying (HVOF) technologies were systematically investigated. X-ray diffraction and transmission electron microscopy analyses showed that the main phases of the three kinds of NiCr/Cr3C2-BaF2 center dot CaF2 coatings were mainly consistent with the designed feedstock powders. The three kinds of NiCr/Cr3C2-BaF2 center dot CaF2 coatings have similar and high microhardness. The HVOF and DS NiCr/Cr3C2-BaF2 center dot CaF2 coatings have lower porosity and higher adhesive strength in comparison to the plasma sprayed NiCr/Cr3C2-BaF2 center dot CaF2 coating. The friction coefficients of the HVOF and DS coatings were lower than that of the plasma sprayed coating, and the HVOF and DS coatings showed better wear resistance. The lower friction coefficients and wear rates of the three coatings and coupled Si3N4 balls at elevated temperatures were attributed to the formation of a compact BaF2 center dot CaF2 eutectic lubricating layer on the worn surface.
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]	SOLID LUBRICANT CONTENT ; COMPOSITE ; TEMPERATURE ; BEHAVIOR ; ENVIRONMENTS ; OXIDATION ; TURBINE ; POWDER ; APS
收录类别	SCI
原文出处	://WOS:000298118600008
语种	英语
WOS记录号	WOS:000298118600008
公开日期	2013-11-28
内容类型	期刊论文
版本	出版稿
源URL	[http://ir.ipe.ac.cn/handle/122111/6393]
专题	过程工程研究所_研究所（批量导入）
作者单位	Chinese Acad Sci, State Key Lab Multiphase Complex Syst, Inst Proc Engn, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Huang, C. B.,Du, L. Z.,Zhang, W. G.. Microstructure, mechanical and tribological characteristics of plasma, detonation gun and HVOF sprayed NiCr/Cr3C2-BaF2 center dot CaF2 coatings[J]. SURFACE ENGINEERING,2011,27(10):762-769.
APA	Huang, C. B.,Du, L. Z.,&Zhang, W. G..(2011).Microstructure, mechanical and tribological characteristics of plasma, detonation gun and HVOF sprayed NiCr/Cr3C2-BaF2 center dot CaF2 coatings.SURFACE ENGINEERING,27(10),762-769.
MLA	Huang, C. B.,et al."Microstructure, mechanical and tribological characteristics of plasma, detonation gun and HVOF sprayed NiCr/Cr3C2-BaF2 center dot CaF2 coatings".SURFACE ENGINEERING 27.10(2011):762-769.

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