| 激光熔覆Ni60A+WC/12Co复合涂层的组织及性能 |
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| 引用本文： | 张永忠,高士友,石力开.激光熔覆Ni60A+WC/12Co复合涂层的组织及性能[J].金属热处理,2002,27(9):10-13. |
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| 作者姓名： | 张永忠 高士友 石力开 |
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| 作者单位： | 北京有色金属研究总院,北京,100088 |
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| 基金项目： | 国家“8 63”计划资助项目 (2 0 0 1AA3370 2 0 1 ) |
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| 摘 要： | 采用激光熔化同步输送Ni60A 30wt%WC/12Co复合粉末，在适度预热后的45钢表面激光熔覆获得了一定厚度的复合涂层。涂层中镶嵌着大量与基体合金结合良好的Co包WC颗粒。熔覆过程中Co包WC颗粒很少发生溶解。涂层与基板为冶金结合，对基板的适度预热避免了涂层的开裂。所得涂层具有很高硬度，涂层基体硬度为1030HV0.3，Co包WC颗粒硬度达2050HV0.3。
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| 关 键 词： | Ni60A＋WC／12Co复合涂层 组织 性能 激光熔覆 |
| 文章编号： | 0254-6051(2002)09-0010-04 |
Microstructure and Properties of Laser Clad Ni60A+WC/12Co Composite Coating |
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| ZHANG Yong-zhong,GAO Shi-you,SHI Li-kai.Microstructure and Properties of Laser Clad Ni60A+WC/12Co Composite Coating[J].Heat Treatment of Metals,2002,27(9):10-13. |
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| Authors: | ZHANG Yong-zhong GAO Shi-you SHI Li-kai |
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| Abstract: | Composite coating of Ni60A WC/12Co was obtained on the surface of preheated 45 steel through laser melting coaxially delivered composite powders.In the coating there is distributed large quantity of Co-bonded WC particles,which are well bonded with the matrix alloy.There is little dissolution for the Co-bonded WC particles.The coating is metallurgically bonded with the substrate.Preheating the substrate suitably can avoid the cracking of the coating.The obtained composite coating is very hard.The hardness for the matrix is 1030HV0.3,and up to 2050HV0.3 for the Co-bonded WC particles. |
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| Keywords: | laser cladding Ni60A WC/12Co microstructure hardness |
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