SiCp/Al复合材料界面反应研究现状

界面反应研究是碳化硅颗粒增强的铝基复合材料研发中的重要研究方向.各国研究者分别从界面反应规律、影响因素、控制途径等方面展开研究.界面反应规律方面研究了Al合金液与SiC颗粒可能存在的界面化学反应、界面反应过程和界面反应模型、界面上的相等;界面反应影响因素方面研究了界面反应与制备工艺过程、参数的关系;界面反应有效控制途径方面研究了、基体合金化、SiC颗粒表面处理、工艺选择与工艺参数控制等.今后的界面反应研究方向为:界面精细结构的研究;界面反应的化学热力学及动力学研究等.

Advance in Research on Interfacial Reaction in SiCp/Al Composites

Researchers aronnd the world conducted experiments according to the aspects of interfacial reaction principle, contributing factors, control approaches, etc. In the aspect of interfacial reaction principle, possibly existing interfacial chemical reaction between Al alloy liquid and SiC particles, interfacial reaction process and model, phases in the interface, etc. , have been researched. In the aspect of contributing factors to interfacial reaction, the relationship among interfacial reaction and process, parameters of fabrication such as effect of Mg, Si content, SiC pretreatment, temperature, cooling speed to interfacial reaction has been investigated. In the aspect of efficient control approaches to interfacial reaction, matrix alloying, surface treatment to SiC particles, process selection and process parameters control have been studied. Research direction of interfacial reaction for the future can be generalized as the following aspects; interfacial fine structure, chemical thermodynamics and kinetics of interfacial reaction, establishment and optimization of heat and mass transfer model to interfacial reaction and new efficient control approaches to interfacial reaction.