金属基复合材料界面问题

INTERFACES IN METAL MATRIX COMPOSITES

金属基复合材料都要在基体合金熔点附近的高温下制备。在制备过程中，纤维、晶须、颗粒等增强体与基体将发生程度不同的的相互作用和界面反应，形成各种结构的界面。界面结构和性能对金属基复合材料的性能起着决定性作用，深入研究和掌握界面反应和界面影响性能的规律，有效地控制界面的结构和性能，是获得高性能金属基复合材料的关键。本文讨论金属基复合材料的界面反应，界面对性能的影响，以及控制界面反应和优化界面结构的有效途径等问题。

All Metal Matrix Composites (MMCs) were fabricated at high temperature near the melting point of matrix alloys. During fabricated process, interfaces with different structures formed because of interfacial reactions between matrix alloys and reinforcements such as fibres, whiskers and particles appeared to some extent. Properties of MMCs were depended on interfacial structures and properties decisively. In order to contrtol the interfacial structures and properties effectively, and to obtain MMCs with high properties,it is very important to study and understand interfacial reactions. In this paper, interfacial reactions in MMCs, the effects of interfaces on properties and the effective ways to control interfacial reactions and to optimize interfacial structures were discussed.