| 钛合金表面激光熔覆TiC涂层显微结构和耐磨性 |
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| 引用本文： | 王慧萍,李军,李芳,李曼萍,奚文龙.钛合金表面激光熔覆TiC涂层显微结构和耐磨性[J].实验室研究与探索,2012,31(2):8-11. |
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| 作者姓名： | 王慧萍 李军 李芳 李曼萍 奚文龙 |
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| 作者单位： | 上海工程技术大学材料工程学院,上海,201600 |
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| 基金项目： | 国家自然科学基金资助项目(51002093);上海市重点学科建设资助项目(J51402) |
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| 摘 要： | 采用HL-5000型横流CO2激光加工机在TC4钛合金表面激光熔覆TiC+Ti和TiC+Ti+F102复合涂层。通过SEM、EDAX、XRD、HXD-1000TMC型显微硬度计,HT-600型高温摩擦磨损试验机,分析了熔覆层的显微组织、成分、物相,测试了激光熔覆层的显微硬度和滑动摩擦磨损性能。结果表明,激光熔覆制备的TiC复合涂层与基体呈冶金结合,在TiC+Ti激光熔覆层中,熔覆层的组织是在Ti基体上分布着TiC树枝晶;在TiC+Ti+F102激光熔覆层中,TiC颗粒发生了部分溶解,熔覆层的组织是在Ti基和γ-Ni基的基体上分布着细小的TiC颗粒和TiC树枝晶。TiC+Ti激光熔覆层的硬度约为700 HV0.1,TiC+Ti+F102激光熔覆层的硬度约为800 HV0.1,两种复合涂层耐磨性均比TC4钛合金显著提高。
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| 关 键 词： | 钛合金耐磨性 激光熔覆 显微结构 |
Microstructure and Wear Resistance of Laser Cladding TiC Coat on Titanium Alloy |
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| WANG Hui-ping
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LI Jun
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LI Fang
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LI Man-ping
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XI Wen-long.Microstructure and Wear Resistance of Laser Cladding TiC Coat on Titanium Alloy[J].Laboratory Research and Exploration,2012,31(2):8-11. |
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| Authors: | WANG Hui-ping LI Jun LI Fang LI Man-ping XI Wen-long |
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| Institution: | (School of Materials Engineering,Shanghai University of Engineering Science,Shanghai 201600,China) |
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| Abstract: | The laser cladding TiC+Ti and TiC + Ti +F102 composite coating on the surfact of TC4 alloy was obtained with 5.0 kW continuous wave CO2 laser.The microstructure,composition and phase of the coating were investigated by means of SEM,EDAX,XRD,HXD-1000TMC Microhardness Tester,HT-600 wear machine Moreover,the microhardness and friction wear properties was measured.The results indicate that the laser cladding TiC composite coating is well bonded with the matrix alloy.The microstructures of TiC dendrites in Ti matrix in the clad layer of TiC+Ti laser clad coating.For TiC+Ti+F102 laser clad coating,parts of TiC particles are dissolved to form a microstructures of TiC particles and fine TiC dendrites in the matrix of Ti and γ-Ni in the clad layer.The microhardness of TiC+Ti coating is 700 HV0.1.The microhardness of TiC+Ti+F102 coating is 800 HV0.1,and the coating greatly enhances the wear resistantce of TC4 titanium alloy. |
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| Keywords: | titanium alloy wear resistantce laser cladding microstructure |
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