| 激光熔敷Ti5Si3/NiTi2复合材料涂层的组织与耐磨性 |
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| 引用本文： | 刘元富,赵海云,王华明.激光熔敷Ti5Si3/NiTi2复合材料涂层的组织与耐磨性[J].材料研究学报,2002,16(3):313-318. |
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| 作者姓名： | 刘元富 赵海云 王华明 |
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| 作者单位： | 1. 北京航空航天大学
2. 北京航空航天大学;华中科技大学激光技术国家重点实验室 |
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| 基金项目： | 国家自然科学基金，航空基础科学基金，50071004，00H51013，， |
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| 摘 要： | 以Ti-Si-Ni合金粉末为原料，利用激光熔敷技术在BT9钛合金表面制备出了以金属间化合物Ti5Si3为增强相，以NiTi2为基体的Ti5Si3/NiTi2金属间化合物快速凝固耐磨复合材料涂层，Ti5Si3/NiTi2合材料涂层的硬度高，组织均匀，致密，与基材之间为完全冶金结合，在干滑动磨损试验条件下具有很好的耐磨性。
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| 关 键 词： | Ti5Si3／NiTi2复合材料 激光熔敷 金属间化合物 复合材料涂层 显微组织 钛合金 表面处理 |
| 文章编号： | 1005-3093(2002)03-0313-06 |
| 修稿时间： | 2001年3月20日 |
MICROSTRUCTURE AND WEAR RESISTANCE OF LASER CLAD Ti5Si3/NiT2 INTERMETALLIC WEAR RESISTANT COMPOSITE COATING |
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| LIU Yuanfu ZHAO Haiyun, WANG Huaming.MICROSTRUCTURE AND WEAR RESISTANCE OF LASER CLAD Ti5Si3/NiT2 INTERMETALLIC WEAR RESISTANT COMPOSITE COATING[J].Chinese Journal of Materials Research,2002,16(3):313-318. |
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| Authors: | LIU Yuanfu ZHAO Haiyun WANG Huaming |
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| Affiliation: | LIU Yuanfu1 ZHAO Haiyun1,2 WANG Huaming1,2** |
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| Abstract: | A wear resistant Ti5Si3/NiTi2 intermetallic composite coating was fabricated on sub-strate of a titanium alloy BT9 by laser cladding using the Ni-30Ti-10Si alloy powders. Microstructure of the coating was characterized using OM, SEM, XRD and EDS. Wear resistance of the coating was tested under dry sliding wear condition at the room temperature. The results show that the laser clad intermetallic composite coating has a rapidly solidified homogeneous microstructure consisting of Ti5Si3 primary particles uniformly distributed in the NiTi2 matrix and is metallurgically bonded to the titanium substrate. The laser clad Ti5Si3/NiTi2 intermetallic composite coating has high hardness and excellent wear resistance under dry sliding wear test conditions. |
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| Keywords: | laser cladding intermetallic composite coating microstructure |
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