Ti元素对Ti_(3)SiC_(2)在铜基复合材料中的分解抑制研究  

Effect of Ti in Inhibiting the Decomposition of Ti_(3)SiC_(2) in Copper Matrix Composites

作　　者：王怡然[1] 高义民[1] WANG Yiran;GAO Yimin(State Key Laboratory for Mechanical Behavior of Materials,School of Materials Science and Engineering,Xi'an Jiaotong University,Xi'an 710049,China)

机构地区：[1]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

出　　处：《铸造技术》2022年第6期410-416,I0026,共8页Foundry Technology

基　　金：陕西省自然科学基础研究计划(2021JQ-049);中国博士后科学基金(2021M692516);广东省重点领域研发计划(2019B010942001)。

摘　　要：三元层状Ti_(3)SiC_(2)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Ti_(3)SiC_(2)/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Ti_(3)SiC_(2)发生分解,导致复合材料组织与性能发生改变。为了抑制Ti_(3)SiC_(2)的分解,提高复合材料性能,对Ti_(3)SiC_(2)颗粒表面进行多弧离子镀Ti改性,制备了界面性能优良,Ti_(3)SiC_(2)颗粒未分解的复合材料。研究了Ti_(3)SiC_(2)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Ti_(3)SiC_(2)的复合材料的组织演化。结果表明,对Ti_(3)SiC_(2)表面进行镀覆Ti元素可以有效抑制Ti_(3)SiC_(2)颗粒在铜基复合材料烧结过程中的分解。Ternary layered Ti_(3)SiC_(2) 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 Ti_(3)SiC_(2)/Cu composites.However,the decomposition of Ti_(3)SiC_(2) in the sintering process results in the change of microstructure and properties of the composites.In order to suppress the decomposition of Ti_(3)SiC_(2) and improve the properties of composite materials,the surface of Ti_(3)SiC_(2) particles was modified by multi-arc ion plating Ti,and the composite materials with excellent interface properties and undecomposed Ti_(3)SiC_(2) particles were prepared.The decomposition of Ti_(3)SiC_(2) in composites and the inhibition mechanism of Ti element on its decomposition were studied,and the microstructure evolution of composites with different contents of Ti_(3)SiC_(2) was analyzed.The results show that the deposition of Ti element on the surface of Ti_(3)SiC_(2) can effectively inhibit the decomposition of Ti_(3)SiC_(2) particles in the sintering process of copper matrix composites.

关 键 词：Ti_(3)SiC_(2) 多弧离子镀 铜基复合材料 

分 类 号：TG148[一般工业技术—材料科学与工程]