High temperature dry sliding friction and wear performance of laser cladding WC/Ni composite coating - 文章详情页

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摘要：

Two　different　types　of　agglomerate　and　angular　WC/Ni　matrix　composite　coatings　were　deposited　by　laser　cladding.　The　high　temperature　wear　resistance　of　these　composite　coatings　was　tested　with　a　ring-on-disc　MMG-10　apparatus.　The　morphologies　of　the　worn　surfaces　were　observed　using　a　scanning　electron　microscopy　(SEM)　equipped　with　an　energy　dispersive　spectroscopy　(EDS)　for　elemental　composition.　The　results　show　that　the　high　temperature　wear　resistance　of　the　laser　clad　WC/Ni-based　composite　coatings　is　improved　significantly　with　WC　mass　fraction　increasing.　The　60%　agglomerate　WC/Ni　composite　coating　has　optimal　high　temperature　wear　resistance.　High　temperature　wear　mechanism　of　60%　WC/Ni　composite　coating　is　from　abrasive　wear　of　low　temperature　into　composite　function　of　the　oxidation　wear　and　abrasive　wear.　©　2016,　Journal　of　Materials　Engineering.　All　right　reserved.

关键词：

Composite coating; High temperature sliding dry friction; Laser cladding; Tungsten carbide; Wear resistance

作者机构：

[ 1 ] [Yang, J.-X.]Institute of Laser Engineering, Beijing University of Technology, Beijing, 100124, China
[ 2 ] [Zhang, J.-Q.]Institute of Laser Engineering, Beijing University of Technology, Beijing, 100124, China
[ 3 ] [Chang, W.-Q.]Institute of Laser Engineering, Beijing University of Technology, Beijing, 100124, China
[ 4 ] [Wang, Y.-F.]Institute of Laser Engineering, Beijing University of Technology, Beijing, 100124, China
[ 5 ] [Chen, H.]Institute of Laser Engineering, Beijing University of Technology, Beijing, 100124, China
[ 6 ] [Wang, X.-B.]Institute of Laser Engineering, Beijing University of Technology, Beijing, 100124, China

通讯作者信息：

[Yang, J.-X.]Institute of Laser Engineering, Beijing University of TechnologyChina

电子邮件地址：

yangjiaoxi@bjut.edu.cn

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