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Ti元素对Ti3SiC2在铜基复合材料中的 分解抑制研究
Effect of Ti in Inhibiting the Decomposition of Ti3SiC2 in Copper Matrix Composites
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- DOI:
- 作者:
- 王怡然，高义民
WANG Yiran, GAO Yimin
- 作者单位:
- 西安交通大学 金属材料强度国家重点实验室，材料科学与工程学院，陕西 西安 710049
State Key Laboratory for Mechanical Behavior of Materials, School of Materials Science and Engineering, Xi'an Jiaotong University, Xi'an 710049, China
- 关键词:
- Ti3SiC2；多弧离子镀；铜基复合材料
Ti3SiC2; multi-arc ion plating; Cu matrix composite
- 摘要:
三元层状Ti3SiC2陶瓷是一种新型的陶瓷材料，具有密度低、熔点高等特点，作为增强相可以明显改善Ti3SiC2/Cu复合材料的力学性能和摩擦磨损性能。然而，在烧结过程中Ti3SiC2发生分解，导致复合材料组织与性能发生改变。为了抑制Ti3SiC2的分解，提高复合材料性能，对Ti3SiC2颗粒表面进行多弧离子镀Ti改性，制备了界面性能优良，Ti3SiC2颗粒未分解的复合材料。研究了Ti3SiC2在复合材料的分解和Ti元素对其分解的抑制机理，分析了不同含量Ti3SiC2的复合材料的组织演化。结果表明，对Ti3SiC2表面进行镀覆Ti元素可以有效抑制Ti3SiC2颗粒在铜基复合材料烧结过程中的分解。
Ternary layered Ti3SiC2 ceramic is a new kind of ceramic material, which has the characteristics of low density and high melting point. As reinforcement phase, it can obviously improve the mechanical properties and friction and wear properties of Ti3SiC2/Cu composites. However, the decomposition of Ti3SiC2 in the sintering process results in the change of microstructure and properties of the composites. In order to suppress the decomposition of Ti3SiC2 and improve the properties of composite materials, the surface of Ti3SiC2 particles was modified by multi-arc ion plating Ti, and the composite materials with excellent interface properties and undecomposed Ti3SiC2 particles were prepared. The decomposition of Ti3SiC2 in composites and the inhibition mechanism of Ti element on its decomposition were studied, and the microstructure evolution of composites with different contents of Ti3SiC2 was analyzed. The results show that the deposition of Ti element on the surface of Ti3SiC2 can effectively inhibit the decomposition of Ti3SiC2 particles in the sintering process of copper matrix composites.