Ni-WC composite coatings by carburizing electrodeposited amorphous and nanocrystalline Ni-W alloys

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	Ni-WC composite coatings by carburizing electrodeposited amorphous and nanocrystalline Ni-W alloys
	S. Latif; M. Mehmood; J. Ahmad; M. Aslam; M. Ahmed; Z. D. Zhang
	2010
发表期刊	Applied Surface Science
ISSN	0169-4332
卷号	256 期号:10 页码:3098-3106
摘要	In situ formation of tungsten carbide in the matrix of FCC nickel has been achieved by carburizing of the electrodeposited Ni-W alloy coatings. The size of the carbide particles ranges between 100 and 500 nm. The carbide phase is also present in the form of very small precipitates inside the nickel grains. The size of such precipitates is between 10 and 40 nm. The carburizing environment was created by introducing a flowing mixture of vaporized 95.5% alcohol (0.25 ml/min, liquid) and argon (0.5 L/min, gas) into the carburizing furnace. Supersaturated nature of electrodeposited amorphous and nanocrystalline alloys, in addition to high diffusivity, have been attributed for the formation of carbide phase in the deposits at a temperature range of 700-850 degrees C. The carbide-metal interface is clean and the composite coatings are compact. Hardness values up to about 1100 KHN are achieved. Hardness increases with tungsten content and carburizing temperature. (C) 2009 Elsevier B.V. All rights reserved.
部门归属	[latif, saadia; mehmood, mazhar; ahmad, jamil; aslam, muhammad] pakistan inst engn & appl sci, dept chem & mat engn, natl ctr nanotechnol, islamabad 45650, pakistan. [ahmed, maqsood] pinstech, div phys, islamabad, pakistan. [zhang, zhi-dong] chinese acad sci, inst met res, shenyang, peoples r china.;mehmood, m (reprint author), pakistan inst engn & appl sci, dept chem & mat engn, natl ctr nanotechnol, islamabad 45650, pakistan;mazhar@pieas.edu.pk
关键词	Amorphous And Nanocrystalline Alloys Coatings Composites Metal-matrix Composites Tungsten Carbide Corrosion-resistance p Alloys Nickel Behavior Deposition Matrix Microstructure Codeposition Strength
URL	查看原文
WOS记录号	WOS:000275233900017
引用统计	被引频次：15[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/31192
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	S. Latif,M. Mehmood,J. Ahmad,et al. Ni-WC composite coatings by carburizing electrodeposited amorphous and nanocrystalline Ni-W alloys[J]. Applied Surface Science,2010,256(10):3098-3106.
APA	S. Latif,M. Mehmood,J. Ahmad,M. Aslam,M. Ahmed,&Z. D. Zhang.(2010).Ni-WC composite coatings by carburizing electrodeposited amorphous and nanocrystalline Ni-W alloys.Applied Surface Science,256(10),3098-3106.
MLA	S. Latif,et al."Ni-WC composite coatings by carburizing electrodeposited amorphous and nanocrystalline Ni-W alloys".Applied Surface Science 256.10(2010):3098-3106.