Role of Al additions in wear control of nanocrystalline Mo(Si1-xAlx)(2) coatings prepared by double cathode glow discharge technique

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	Role of Al additions in wear control of nanocrystalline Mo(Si1-xAlx)(2) coatings prepared by double cathode glow discharge technique
	Xu J; Fan HS; Li ZY(李正阳); Xu, J (reprint author), Nanjing Univ Aeronaut & Astronaut, Dept Mat Sci & Engn, 29 Yudao St, Nanjing 210016, Jiangsu, Peoples R China.
发表期刊	MATERIALS SCIENCE AND TECHNOLOGY
	2013-08-01
卷号	29 期号:8 页码:900-907
ISSN	0267-0836
摘要	Four kinds of nanocrystalline Mo(Si1-xAlx)(2) coatings with differing Al contents are prepared onto a Ti-6Al-4V substrates by a double cathode glow discharge apparatus. The microstructural features of the deposited coatings were characterised by X-ray diffraction, scanning electron microscopy and transmission electron microscopy. These coatings are composed of the equiaxed C40-MoSi2 grains with the average grain size of similar to 5 nm. Nano-indentation measurements indicated that the hardness H, elastic modulus E and the H/E or H-3/E-2 ratio of the nanocrystalline Mo(Si1-xAlx)(2) coatings slightly increase with the increase in Al content. The tribological behaviour of the nanocrystalline Mo(Si1-xAlx)(2) coating sliding against a ZrO2 ceramic ball at room temperature has been compared using a ball-on-disc type tribometer under unlubricated conditions. Experimental results showed that the specific wear rates of the nanocrystalline Mo(Si1-xAlx)(2) coatings decrease with increasing Al content and are dramatically reduced by more than 1-2 orders of magnitude over the uncoated Ti-6A1-4V. The enhancement of wear resistance of the nanocrystalline Mo(Si1-xAlx)(2) coatings by Al additions is correlated with the increased mechanical properties and the forming oxide layer by tribochemical reactions.
关键词	Molybdenum Silicides Nanostructured Materials Friction/wear Thin Films
学科领域	制造工艺力学
URL	查看原文
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000320231600002
项目资助者	National Natural Science Foundation of China [51175245]
课题组名称	MAMYAG激光毛化技术
论文分区	Q3
引用统计	被引频次：9[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/47347
专题	先进制造工艺力学实验室
通讯作者	Xu, J (reprint author), Nanjing Univ Aeronaut & Astronaut, Dept Mat Sci & Engn, 29 Yudao St, Nanjing 210016, Jiangsu, Peoples R China.
推荐引用方式 GB/T 7714	Xu J,Fan HS,Li ZY,et al. Role of Al additions in wear control of nanocrystalline Mo(Si1-xAlx)(2) coatings prepared by double cathode glow discharge technique[J]. MATERIALS SCIENCE AND TECHNOLOGY,2013,29,8,:900-907.
APA	Xu J,Fan HS,Li ZY,&Xu, J .(2013).Role of Al additions in wear control of nanocrystalline Mo(Si1-xAlx)(2) coatings prepared by double cathode glow discharge technique.MATERIALS SCIENCE AND TECHNOLOGY,29(8),900-907.
MLA	Xu J,et al."Role of Al additions in wear control of nanocrystalline Mo(Si1-xAlx)(2) coatings prepared by double cathode glow discharge technique".MATERIALS SCIENCE AND TECHNOLOGY 29.8(2013):900-907.

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