| 钛表面激光熔覆原位制备Ti5Si3涂层结构及摩擦学性能 |
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| 引用本文： | 郭纯,周健松,陈建敏.钛表面激光熔覆原位制备Ti5Si3涂层结构及摩擦学性能[J].无机材料学报,2012(9):970-976. |
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| 作者姓名： | 郭纯 周健松 陈建敏 |
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| 作者单位： | 中国科学院兰州化学物理研究所;中国科学院研究生院 |
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| 基金项目： | 国家自然科学基金重点项目(51045004);中科院知识创新工程重要方向项目(YYYJ-0913)~~ |
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| 摘 要： | 利用激光熔覆技术在钛表面预置硅粉原位制备了Ti5Si3涂层.用XRD、SEM和TEM分析了涂层的组成和组织结构.在UMT摩擦磨损试验机上对Ti5Si3涂层在不同载荷和不同滑动速度下的摩擦磨损性能进行了测试.实验结果表明:涂层的物相主要是Ti5Si3相和基材Ti相,涂层的显微结构为球状和块状晶,Ti5Si3涂层具有较高的显微硬度,涂层截面的平均显微硬度约为840 HV0.2,是钛基材的4.4倍;Ti5Si3涂层可显著提高钛基材的耐磨性能;Ti5Si3涂层的磨损机理为磨粒磨损和粘着磨损.
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| 关 键 词： | 钛 激光熔覆 涂层 Ti5Si3 摩擦性能 |
Microstructure and Tribological Properties of Ti5Si3 Coating In-situ Synthesized on Titanium Substrate by Laser Cladding |
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| GUO Chun,ZHOU Jian-Song,CHEN Jian-Min.Microstructure and Tribological Properties of Ti5Si3 Coating In-situ Synthesized on Titanium Substrate by Laser Cladding[J].Journal of Inorganic Materials,2012(9):970-976. |
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| Authors: | GUO Chun ZHOU Jian-Song CHEN Jian-Min |
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| Affiliation: | 1(1.Lanzhou Institute of Chemical Physics,Chinese Academy of Sciences,Lanzhou 730000,China;2.Graduate University of the Chinese Academy of Sciences,Beijing 100039,China) |
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| Abstract: | Using silicon powder as the precursor to improve the wear resistance of Ti5Si3 coating was in situ successfully synthesized on Ti substrate by laser cladding.Friction and wear behavior of Ti5Si3 coatings under different normal loads and sliding speeds wear test conditions were evaluated using a UMT-2MT friction and wear tester.It is found that the prepared coating is mainly composed of Ti5Si3 and Ti phases.The high resolution transmission electron microscopy results confirm further the existence of Ti5Si3 compound in the prepared coating.Ti5Si3 coating has spherical and block-like microstructure.The Ti5Si3coating shows a high average hardness of approximately 840 HV0.2,which is about 4.4 times as that of Ti substrate.Tribological properties of the prepared Ti5Si3 coating were systematically evaluated.It is found that the Ti5Si3coating can improve the wear resistance of Ti.The wear mechanism of Ti5Si3 coating is abrasive and adhesive wear when sliding against GCr15 steel ball under all wear conditions. |
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| Keywords: | titanium laser cladding coating Ti5Si3 tribological property |
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