高温自蔓延反应合成功能材料的研究进展

简要总结了自蔓延高温反应(SHS)的国内外发展过程。从SHS前驱体元素体系的组成及SHS产物的应用方向(粉体功能材料、陶瓷材料、涂层材料等)进行了分类阐述,着重分析了未来含能材料在SHS方面的应用。其次,重点分析了适用于不同应用方向SHS材料的点火机制、反应机制、热力学和动力学等理论分析,在此基础上提出绝热温度不是SHS反应唯一判据的新观点。最后,介绍了自蔓延高温反应的燃烧机理,阐明了反应物粒径、球磨参数、反应物压坯压力等工艺参数对SHS反应的影响,同时对SHS技术发展中存在问题进行了分析。

Recent Progress on the Functional Materials Synthesized by High Temperature Self-Propagating Reactions

The development process of self-propagating high-temperature synthesis (SHS) at home and abroad was briefly summarized. The components of the element system of SHS precursor and the application direction of SHS products (powdered functional materials, ceramic materials, coating materials) were classified and expounded and the application of future energetic materials in SHS was emphatically analyzed. Secondly, the theoretical analysis of ignition mechanism, reaction mechanism, thermodynamics and kinetics of SHS materials suitable for different application directions was emphatically analyzed. On this basis, a new viewpoint that the adiabatic temperature was not the only criterion of SHS reaction was proposed. Finally, the combustion mechanism of SHS was introduced and the effects of experimental conditions such as particle sizes of reactants, milling parameters and pressed compact pressure of reactants on the SHS reactions were clarified. At the same time, the problems in the development of the SHS technology were analyzed.