一种新型非晶钎料钎焊Si_3N_4陶瓷连接界面的研究

Study on the Reaction Layer Products of Si_3N_4 Joint by Using a New Amorphous Brazing Alloy

采用Ti40Zr25Ni15Cu20非晶钎料钎焊Si3N4陶瓷,研究了钎焊工艺参数对连接界面产物的影响。结果表明,在本文试验条件下,钎焊工艺参数对接头强度的影响主要是由于影响反应层厚度所导致;通过SEM,EDX等微观分析手段,研究了钎焊界面的微观结构,得出界面反应层由两部分组成,接头界面微观结构为Si3N4/TiN/Ti-Si,Zr-Si化合物/钎缝中心。

Si3N4 ceramic is brazed with Ti40Zr25Ni15Cu20 amorphous filler metal, the effect ot brazing processing parameter on reaction layer products is discussed. The results show that the joint strength first increased then descended with the longer brazing time and the higher brazing temperature, and the influence on joint strength is carried out by reaction layer thickness. The interfacial microstructure is composed of two parts which are TiN and Ti-Si,Zr-Si compound respectively with the SEM, EDX, etc.