Ta离子注入Ti6Al4V合金耐磨性研究

稀有金属材料与工程, 2008, 37(3): 556-560.

Ta离子注入Ti6Al4V合金耐磨性研究

冷崇燕 ^1, , 张旭 ^2, , 周荣 ^3, , 张荟星 ^4, , 吴先映 ^5,

1.昆明理工大学,昆明,云南,650093

2.北京师范大学,北京,100875

3.昆明理工大学,昆明,云南,650093

4.北京师范大学,北京,100875

5.北京师范大学,北京,100875

基金项目: 射线束技术与材料改性教育部重点实验室开放基金(0604)

关键词： Ti6Al4V , Ta离子注入 , 磨损性能

Tribological Performances of Ti6Al4V Alloy Modified by Ta Ion Implantation

用5种Ta离子注入剂量(1.2×1016、3×1016、1.5×1017、3×1017、4.5×1017 ions/cm2)对Ti6Al4V合金进行离子注入表面改性.采用纳米硬度计测量Ta离子注入前后Ti6Al4V合金表面硬度随压入深度的变化,利用多功能摩擦磨损试验机研究Ta离子注入前后Ti6Al4V合金材料的耐磨性,利用X射线衍射技术研究Ta离子注入前后Ti6Al4V合金表面的物相分布.结果表明,除Ta离子注入剂量为3×1017 ions/cm2外,Ta离子注入Ti6Al4V合金硬度有一定的提高;Ta离子注入Ti6Al4V合金摩擦系数降低;除Ta离子注入剂量为3×1017 ions/cm2外,Ta离子注入Ti6Al4V合金的耐磨损性能得到了改善.摩擦系数降低和硬度提高、Ta离子注入的固溶强化、单质Ta新相的弥散强化改善了Ti6Al4V合金的耐磨损性能.

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