Surface Structures and Mechanical Properties of 9Cr18Mo Stainless Steels Implanted with Nitrogen Ions

	Surface Structures and Mechanical Properties of 9Cr18Mo Stainless Steels Implanted with Nitrogen Ions
	Liu F. B.; Li J. L.; Jin J.; Zhou G.; Qiu W. W.; Qing T.
	2013
发表期刊	Rare Metal Materials and Engineering
ISSN	ISBN/1002-185X
卷号	42 期号:9
摘要	The polished 9Cr18Mo martensitic stainless steel was implanted with nitrogen ions at a fluence of 2x10(17) ion/cm(2). To investigate the surface mechanical properties of the 9Cr18Mo steel samples after nitrogen ion implantation, the surface nanohardness and tribology properties of the original and nitrogen ion implanted steel samples were investigated. At the same time, their surface morphologies were also examined. The results show that nitrogen ion implantation would improve the surface hardness and lower the friction coefficient and wear rates of 9Cr18Mo steel samples significantly, while it does not change their surface morphology and surface roughness. To elucidate the strengthening mechanism of nitrogen ion implantation, the surface structures and components were studied by X-ray diffractometer and X-ray photoelectron spectroscopy. The results indicate that nitrogen ion implantation region can be divided into two layers. One is a surface layer of around 20 nm thickness, which is composed of metal nitrides and solid solution phases besides plenty of carbon atoms and the carbon atoms accumulate at the surface in a form of CrxCy phases. The other is the subsurface layer below 20 nm depth, which is mainly composed of metal nitrides. The surface components and structures have significant contributions to the improved mechanical properties.
收录类别	SCI
语种	英语
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/40882
专题	中科院长春光机所知识产出
推荐引用方式 GB/T 7714	Liu F. B.,Li J. L.,Jin J.,et al. Surface Structures and Mechanical Properties of 9Cr18Mo Stainless Steels Implanted with Nitrogen Ions[J]. Rare Metal Materials and Engineering,2013,42(9).
APA	Liu F. B.,Li J. L.,Jin J.,Zhou G.,Qiu W. W.,&Qing T..(2013).Surface Structures and Mechanical Properties of 9Cr18Mo Stainless Steels Implanted with Nitrogen Ions.Rare Metal Materials and Engineering,42(9).
MLA	Liu F. B.,et al."Surface Structures and Mechanical Properties of 9Cr18Mo Stainless Steels Implanted with Nitrogen Ions".Rare Metal Materials and Engineering 42.9(2013).

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