NiTi 合金表面激光原位反应合成TiN增强金属基复合材料涂层

张春华, 张松, 文效忠, 刘常升, 才庆魁

张春华, 张松, 文效忠, 等. NiTi 合金表面激光原位反应合成TiN增强金属基复合材料涂层[J]. 复合材料学报, 2005, 22(3): 116-120.
引用本文: 张春华, 张松, 文效忠, 等. NiTi 合金表面激光原位反应合成TiN增强金属基复合材料涂层[J]. 复合材料学报, 2005, 22(3): 116-120.
ZHANG Chunhua, ZHANG Song, WEN Xiaozhong, et al. IN-SI TU SYNTHESIZED TiN REINFORCED MMC COATINGBY LASER CLADDINGON NiTi ALLOY[J]. Acta Materiae Compositae Sinica, 2005, 22(3): 116-120.
Citation: ZHANG Chunhua, ZHANG Song, WEN Xiaozhong, et al. IN-SI TU SYNTHESIZED TiN REINFORCED MMC COATINGBY LASER CLADDINGON NiTi ALLOY[J]. Acta Materiae Compositae Sinica, 2005, 22(3): 116-120.

NiTi 合金表面激光原位反应合成TiN增强金属基复合材料涂层

基金项目: 国家高技术研究发展计划(863 计划) (2002AA305203); 辽宁省科学技术基金(20031024); 辽宁省教育厅科学研究计划(2004D11)
详细信息
    通讯作者:

    张松,博士,教授,主要从事材料表面工程及激光先进制造技术研究 E-mail:songzhang_sy@yahoo.com.cn

  • 中图分类号: TB331

IN-SI TU SYNTHESIZED TiN REINFORCED MMC COATINGBY LASER CLADDINGON NiTi ALLOY

  • 摘要: 采用连续高功率固体Nd-YA G激光辐照, 使预置于NiTi 合金表面的Ti 粉在N2 环境中形成TiN 增强Ti 基复合材料涂层。选择适当的激光辐照工艺参数, 获得致密的TiN 增强金属基复合材料激光改性层。SEM 观察及EDAX 成分分析结果表明, TiN/ Ti 金属基复合材料表面改性层与基体NiTi 合金存在良好的冶金结合, 界面处成分均匀过渡, 表面Ni 含量极低。显微硬度测试及磨损实验表明, TiN/ Ti 金属基复合材料改性层显著提高了NiTi 合金的表面硬度和耐磨性, 激光表面改性层可有效地改善NiTi 合金作为生物医学材料使用的表面成分和性能。
    Abstract: Af ter being irradiated by a continuous wave Nd-YAG laser in N2 environment, the Ti powders preplaced on the surface of NiTi subst rate t ransformed into a TiN reinforced metal mat rix composite (MMC) coating. Acompact laser modified surface coating reinforced with fine TiN can be achieved with optimum process parameters.The amount of TiN reinforcement gradually decreases across the coating. SEM and EDAX result s indicate that thereis a good metallurgical bonding between the hard MMC modified layer and the NiTi alloy subst rate. The mass f raction of Ni in the modified surface coating is very low. Microhardness and wear test result s show that the surfacehardness and wear resistance are significantly enhanced. Laser surface modification can effectively improve the surface composition and performance of NiTi alloy as an implant biomedical material.
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出版历程
  • 收稿日期:  2004-06-09
  • 修回日期:  2004-10-21
  • 刊出日期:  2005-06-14

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