场助自蔓延高温连接是一种新型材料连接技术 ,适合于场助自蔓延高温连接的中间层体系需要含有高放热反应组元 ,同时要求含有低熔点组元以降低体系的引燃温度 ,最终优选出Ti-Al -C体系作为场助自蔓延高温连接TiAl合金的中间层组元。通过对不同含量的中间层进行场助自蔓延高温合成反应试验 ,最终确定比较理想的中间层成分为Ti5Al4C1,通过组织分析发现此时反应产物主要由TiAl和TiC组成 Field-assisted self-propagating high-temperature connection is a new type of material connection technology. The middle layer system suitable for field-assisted self-propagating high temperature connection needs to contain high exothermic reaction components, and also requires low melting component to reduce the ignition temperature of the system, Ti-Al-C system is finally optimized as a field-assisted self-propagating high temperature junction TiAl alloy intermediate layer components. Through field-assisted self-propagating high temperature synthesis reaction experiments with different contents of intermediate layers, the ideal interlayer composition was finally determined as Ti5Al4C1. The microstructure analysis showed that the reaction products mainly consisted of TiAl and TiC