| 激光熔覆SiC/Co复合涂层的组织与性能研究 |
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| 引用本文： | 张维平,郎志华,马海波. 激光熔覆SiC/Co复合涂层的组织与性能研究[J]. 表面技术, 2011, 40(1): 8-10,33 |
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| 作者姓名： | 张维平 郎志华 马海波 |
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| 作者单位： | 大连理工大学,材料科学与工程学院,大连,116024;大连理工大学,材料科学与工程学院,大连,116024;大连理工大学,材料科学与工程学院,大连,116024 |
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| 摘 要： | 在45钢表面采用激光熔覆工艺制备了SiC/Co复合涂层,分析了涂层的显微组织,测试了涂层的硬度和摩擦学性能.结果表明:SiC/Co涂层主要由γ-Co和Cr<,23>C<,6>共晶组织组成,涂层结合区为枝晶,熔覆区为等轴晶;熔覆区的显微硬度为1300～1500HK,约为45钢基体硬度的4倍;该涂层明显改善了45钢基体的摩...
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| 关 键 词： | 激光熔覆 SiC/Co复合涂层 显微组织 摩擦学性能 |
Microstructure and Performance of Laser Cladding SiC/Co Coating |
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| ZHANG Wei-ping,LANG Zhi-hua,MA Hai-bo. Microstructure and Performance of Laser Cladding SiC/Co Coating[J]. Surface Technology, 2011, 40(1): 8-10,33 |
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| Authors: | ZHANG Wei-ping LANG Zhi-hua MA Hai-bo |
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| Affiliation: | ZHANG Wei-ping,LANG Zhi-hua,MA Hai-bo(Department of Materials Science and Engineering,Dalian University of Technology,Dalian 116024,China) |
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| Abstract: | The SiC/Co composite coating was prepared on 45 steel substrate by laser cladding.The coating’s microstructure,friction and wear properties were examined.The results show that the cladding layer is composed of γ-Co and Cr23C6.The bonding zone of the coating is branches crystal and the cladding layer is equiaxed crystal phase.Microhardness of the melting zone is between 1 300～1 500HK,which is 4 times higher than that of the substrate.The friction and wear properties of coating increases prominently compared with matrix. |
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| Keywords: | laser cladding SiC/Co composite coating microstructure tribological property |
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