Structure, mechanical and sliding wear properties of WC-Co/MoS2-Ni coatings by detonation gun spray

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	Structure, mechanical and sliding wear properties of WC-Co/MoS2-Ni coatings by detonation gun spray
	H. Du; C. Sun; W. G. Hua; T. G. Wang; J. Gong; X. Jiang; S. W. Lee
	2007
发表期刊	Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing
ISSN	0921-5093
卷号	445 页码:122-134
摘要	At present, more and more investigations are being carried out to improve properties of thermal spray coatings, in particular for the dry contact situation. We have deposited a series of WC-Co/MoS2-Ni coatings by detonation gun (D-gun) spray, using a commercial WC-Co powder and a MOS2-Ni powder, with a proper spray condition in view of both powders. The structure, mechanical and sliding wear properties of these coatings were characterized. The results by SEM, EMPA, XRD and XRF indicate that the MoS, composition was kept and distributed homogeneously in the WC-Co/MoS2-Ni coatings and its content is a little higher than the feed powder. The results also indicate that hardness, fracture toughness and adhesion of the WC-Co/MoS-Ni coatings decrease with the increasing MoS2 content in the coating, while porosity and roughness the same, comparing with a pure WC-Co coating deposited under the same condition. It is found that this WC-Co/MoS2-Ni coating possesses self-lubricating property. Furthermore, the MoS2 composition in the WC-Co/MoS2-Ni coatings shows a contribution in lowering wear rate under dry sliding conditions when its content is lower than 4.9 wt.%. However, the wear rate is higher when the content is 7.2 wt.%, which indicate that the MoS, content should be proper for an improvement of the D-gun sprayed WC-Co/MoS2-Ni coating on wear resistance. (c) 2006 Elsevier B.V. All rights reserved.
部门归属	chinese acad sci, inst met res, div surface engn mat, shenyang 110016, peoples r china. univ siegen, inst mat engn, d-57068 siegen, germany. sun moon univ, dept mat engn, interface engn lab, asan 336708, chungnam, south korea.;du, h (reprint author), chinese acad sci, inst met res, div surface engn mat, shenyang 110016, peoples r china;hdu@imr.ac.cn
关键词	Detonation Gun Spraying Wc-co Coating Microstructure Mechanical Property Self-lubricating Srv Wc-co Coatings Carbide Grain-size Tribological Properties Cermet Coatings Cemented Carbides Process Variables Alumina Coatings Behavior Hvof Friction
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WOS记录号	WOS:000244301500016
引用统计	被引频次：38[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/321006/33498
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	H. Du,C. Sun,W. G. Hua,et al. Structure, mechanical and sliding wear properties of WC-Co/MoS2-Ni coatings by detonation gun spray[J]. Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,2007,445:122-134.
APA	H. Du.,C. Sun.,W. G. Hua.,T. G. Wang.,J. Gong.,...&S. W. Lee.(2007).Structure, mechanical and sliding wear properties of WC-Co/MoS2-Ni coatings by detonation gun spray.Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,445,122-134.
MLA	H. Du,et al."Structure, mechanical and sliding wear properties of WC-Co/MoS2-Ni coatings by detonation gun spray".Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing 445(2007):122-134.