Effects of Si content on microstructure and mechanical properties of TiALN/Si3N4-Cu nanocomposite coatings

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	Effects of Si content on microstructure and mechanical properties of TiALN/Si3N4-Cu nanocomposite coatings
	C. J. Feng; S. L. Hu; Y. F. Jiang; N. M. Wu; M. S. Li; L. Xin; S. L. Zhu; F. H. Wang
	2014
发表期刊	Applied Surface Science
ISSN	0169-4332
卷号	320 页码:689-698
摘要	TiALN/Si3N4-Cu nanocomposite coatings of various Si content (0-5.09 at.%) were deposited on AISI-304 stainless steel by DC reactive magnetron sputtering technique. The chemical composition, microstructure, mechanical and tribological properties of these coatings were systematically investigated by means of X-ray diffraction (XRD), field emission scanning electron microscope (FESEM), nanoindentation tester, a home-made indentation system, a scratch tester and a wear tester. Results indicated that with increasing Si content in these coatings, a reduction of grain size and surface roughness, a transformation of the (1 1 1) preferred orientation was detected by XRD and FESEM. Furthermore the hardness of these coatings increase from 9.672 GPa to 18.628 GPa, and the elastic modulus reveal the rising trend that increase from 224.654 GPa to 251.933 GPa. However, the elastic modulus of TiAlN/Si3N4-Cu coating containing 3.39 at.% Si content dropped rapidly and changed to about 180.775 GPa. The H-3/E-2 ratio is proportional to the film resistance to plastic deformation. The H-3/E-2 ratio of the TiAlN/Si3N4-Cu coating containing 3.39 at.% Si content possess of the maximum of 0.11 GPa, and the indentation test indicate that few and fine cracks were observed from its indentation morphologies. The growth pattern of cracks is mainly bending growing. The present results show that the best toughness is obtained for TiAlN/Si3N4-Cu nanocomposite coating containing 3.39 at.% Si content. In addition, the TiAlN/Si3N4-Cu coating containing 3.39 at.% Si content also has good adhesion property and superior wear resistance, and the wear mechanism is mainly adhesion wear. (C) 2014 Published by Elsevier B.V.
部门归属	[feng, changjie ; hu, shuilian ; jiang, yuanfei ; wu, namei] nanchang hangkong univ, sch mat sci & engn, nanchang 330063, peoples r china. [li, mingsheng] jiangxi sci & technol normal univ, jiangxi key lab surface engn, nanchang 330013, peoples r china. [xin, li ; zhu, shenglong ; wang, fuhui] chinese acad sci, inst met res, state key lab corros & protect, shenyang 110016, peoples r china. ; jiang, yf (reprint author), nanchang hangkong univ, sch mat sci & engn, nanchang 330063, peoples r china. ; jyf88889@126.com
关键词	Tialn/si3n4-cu Nanocomposite Coatings Si Content Microstructure Mechanical Property Wear Resistance Cu-n Films Superhard Coatings Thin-films Al Hardness Tialn
URL	查看原文
语种	英语
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/73225
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	C. J. Feng,S. L. Hu,Y. F. Jiang,et al. Effects of Si content on microstructure and mechanical properties of TiALN/Si3N4-Cu nanocomposite coatings[J]. Applied Surface Science,2014,320:689-698.
APA	C. J. Feng.,S. L. Hu.,Y. F. Jiang.,N. M. Wu.,M. S. Li.,...&F. H. Wang.(2014).Effects of Si content on microstructure and mechanical properties of TiALN/Si3N4-Cu nanocomposite coatings.Applied Surface Science,320,689-698.
MLA	C. J. Feng,et al."Effects of Si content on microstructure and mechanical properties of TiALN/Si3N4-Cu nanocomposite coatings".Applied Surface Science 320(2014):689-698.