| 引用本文: | 张生欣， 狄平， 徐梦廓， 朱世根.感应重熔-热处理对镍基碳化钨涂层的影响[J].中国表面工程,2016,29(1):46~50 |
| ZHANG Shengxin, DI Ping, XU Mengkuo, ZHU Shigen.Effects of Induction Remelting and Heat Treatment on WC Reinforced Ni-based Alloy Coatings[J].China Surface Engineering,2016,29(1):46~50 |
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| 摘要: |
| 为了进一步挖掘镍基碳化钨涂层的潜能，在40Cr基材上利用火焰喷涂制备Ni60+35%WC复合涂层并对涂层进行感应重熔及热处理，利用扫描电镜（SEM）、显微硬度计和摩擦磨损试验机分析测定了涂层的显微组织、显微硬度及摩擦磨损性能。结果表明，感应重熔使涂层与基材形成良好的冶金结合，涂层致密，硬度、耐磨性显著优于基材。经淬火及回火后，涂层硬度有所提高。850 ℃淬火，400 ℃回火的涂层硬度最高，达到866 HV0.1，耐磨性也最好，磨损量仅为基材的43%。 |
| 关键词: 火焰喷涂 感应重熔 镍基涂层 耐磨性 显微硬度 |
| DOI：10.11933/j.issn.1007-9289.2016.01.007 |
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| Effects of Induction Remelting and Heat Treatment on WC Reinforced Ni-based Alloy Coatings |
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ZHANG Shengxin, DI Ping, XU Mengkuo, ZHU Shigen
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1a. College of Mechanical Engineering, 1b. Engineering Research Center of Advanced Textile Machinery, Ministry of Education, Donghua University， Shanghai 201620
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| Abstract: |
| To excavate the potential of Nibased WC coatings further, Ni60+35%WC composite coatings was prepared by flame spaying on 40Cr, induction remelting and heat treatment were then carried on the coatings. The microstructure, microhardness and wear performance of the coatings were studied by scanning electron microscope (SEM), microhardness tester, and friction and wear testing machine. Results show that there exists metallurgical bonding between the coatings and the substrate after induction remelting. The microstructure of the coatings is compact, and the microhardness and wear resistance of the coatings are significantly higher than the substrate. The microhardness of the coatings is improved after being quenched and tempered. When being quenched at 850 ℃ and tempered at 400 ℃, the microhardness of the coatings is the highest, up to 866 HV0.1, its wear resistance is the best, and the abrasion loss is only 43% that of the substrate. |
| Key words: flame spaying induction remelting Nibased alloy coating wear resistance microhardness |
