Fabrication and properties of Al2O3-TiB2-TiC/Al metal matrix composite coatings by atmospheric plasma spraying of SHS powders

被引：68
作者：
Xu, Jiaying [1 ]
Zou, Binglin [1 ]
Tao, Shunyan [2 ]
Zhang, Mengxian [3 ,4 ]
Cao, Xueqiang [1 ]
机构：
[1] Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Rare Earth Resources Utilizat, Changchun 130022, Jilin, Peoples R China
[2] Chinese Acad Sci, Shanghai Inst Ceram, Key Lab Inorgan Coating Mat, Shanghai 200050, Peoples R China
[3] Taizhou Univ, Coll Phys & Elect Engn, Taizhou 318000, Peoples R China
[4] Taizhou Univ, Zhejiang Prov Key Lab Cutting Tools, Taizhou 318000, Peoples R China
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2016年 / 672卷
关键词：
Al2O3-TiB2-TiC/Al; Metal matrix composite (MMC); Atmospheric plasma spraying (APS); Self-propagation high-temperature synthesis (SHS); HIGH-TEMPERATURE SYNTHESIS; TRIBOLOGICAL PROPERTIES; MAGNESIUM ALLOY; MICROSTRUCTURE; BEHAVIOR; WEAR; OXIDATION;
D O I：
10.1016/j.jallcom.2016.02.116
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The Al2O3-TiB2-TiC/Al metal matrix composite coatings were deposited onto MB26 magnesium alloy substrates by atmospheric plasma spraying (APS) using the powders produced by self-propagation high-temperature synthesis (SHS). Phase composition and microstructure of the SHS powders and APS coatings were characterized by XRD and SEM. Microhardness, bond strength and wear resistance of the composite coatings were investigated by using a Vickers hardness tester, pull-off tester and pin-on-desk tribometer. The APS composite coatings mainly consisted of TiB2, TiC, excess Al and two types of alumina. The coatings bonded well to the substrate. Microhardness and wear resistance of the coatings increased significantly in comparison with that of the MB26 substrate. The applied load and the fraction of Al content were found to be the most effective factors on the wear rate of the coatings. (C) 2016 Elsevier B.V. All rights reserved.
引用
收藏
页码：251 / 259
页数：9
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