Ti-Zr-Ni-Cu非晶钎料钎焊Si_3N_4陶瓷的连接强度

Joint strength of Si_3N_4 brazed with Ti-Zr-Ni-Cu amorphous brazing alloy

采用Ti40Zr25Ni15Cu20非晶钎料钎焊Si3N4陶瓷,研究钎焊工艺参数对界面反应层和接头连接强度的影响。结果表明:随着钎焊时间的增加和钎焊温度的提高,接头弯曲强度都表现出先上升后下降的趋势;钎焊工艺参数对连接强度的影响主要是由于影响反应层厚度所致;在相同钎焊工艺条件下,采用Ti40Zr25Ni15Cu20非晶态钎料和晶态钎料相比,其接头连接强度提高了84%。

Si3N4 ceramic was brazed with Ti40Zr25Ni15Cu20 amorphous filler metal, the effect of brazing processing parameters on interracial microstructure and joint strength was discussed. The results show that the joint strength first increases then descends with the increase of brazing time and brazing temperature, and the influence on joint strength is carried out by reaction layer thickness. Under the same experiments conditions, the joint strength brazed with amorphous filler metal is enhanced by 84 % compared with the crystalline filler.