【摘要】 高温制备过程中熔融Al与SiC直接接触,二者间界面反应发生的可能性与多向性直接影响复合材料的界面结合状态。全面了解Al和SiC之间的界面结合、界面反应、界面结构等对于提高材料性能有着极其重要的作用。尽管人们对Al及其合金与SiC之间的润湿性和界面反应的研究很多,但很多结论仍存在分歧,且对Al与SiC真实润湿性的认识不够全面。Al与SiC之间界面反应发生的反应程度与反应时间、温度有很大关系,但是对于反应参数与反应程度之间的具体对应关系还没有系统的综述。合金元素的添加可以减弱界面反应的发生,然而在不同反应条件下,所添加合金元素的量与界面反应程度的关系,以及合金元素对于界面反应的影响机制还没有明确报道。本文系统地综述在确定的反应时间与反应温度条件下的界面反应、界面产物以及反应产物演变规律及机制等,Al以及添加不同合金元素的合金与SiC界面情况及界面润湿行为影响机制。从界面润湿、界面反应以及界面产物角度,为制备复合材料过程中所选择的工艺参数提供实验依据。更多还原

【Abstract】 During the high-temperature melting process, Al is in full contact with SiC. The interface bonding properties of composites are closely related to the possibility and multi-directionality of interface reaction between them. A comprehensive understanding of the interfacial bonding, interfacial reaction,and interface structure between Al and SiC is of great significance for improving the material properties.There have been many researches on the wettability and interface reaction between Al or its alloys and SiC. However, there are still some differences and disputes on some issues, and the understanding of the true wettability of Al and SiC is not systematic enough. Reaction time and temperature have a great influence on the degree of interface reaction between Al and SiC, but there is still no systematic review on the specific relationship between reaction parameters and reaction degree. The addition of alloying elements can weaken the occurrence of interfacial reactions. However, under different reaction conditions,the relationship between the amount of alloying elements added and the reaction degree, and the mechanism of action of alloying elements on interface reaction have not been clearly reported. This article systematically reviews the interfacial reactions, interfacial products and reaction product evolution rules and mechanisms under specific reaction conditions, Al and the addition of different alloying elements to the SiC interface and interface wetting behavior. From the aspects of interfacial wetting, interfacial reaction and interfacial product, this article provided experimental data, theoretical references for the selection of process parameters during the preparation of composite.更多还原