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用Ａｌ－３ｗｔ％Ｔｉ合金真空加压钎焊Ｓｉ３Ｎ４陶瓷，研究了压力对钎缝组织与接头性能的影响。结果表明，如果填充金属钎焊时处于固液双相区，施加压力既能减小钎缝宽度，又能改善钎缝金属组织，使接头强度得到提高；加压可以作为一种改性钎缝金属的方式。含大量Ａｌ３Ｔｉ的Ａｌ－３ｗｔ％Ｔｉ钎焊接头与用纯Ａｌ钎焊的接头相比，其高温性能得到明显改善，前者６００℃时的剪切强度为２９ＭＰａ，而后者只有４．５ＭＰａ。
Si3N4 ceramics were vacuum-brazed with Al-3wt% Ti alloy to study the effect of pressure on the microstructure and joint properties of the braze joint. The results show that if the filler metal brazing in the solid-liquid dual-phase zone, the pressure can not only reduce the width of the brazing seam, but also improve the brazing seam metal structure, the joint strength is improved; pressure can be used as a modified brazing seam Metal way. The Al-3wt% Ti brazed joints with a large amount of Al3Ti show a significant improvement in high-temperature performance compared with joints brazed with pure Al, with the former having a shear strength of 29MPa at 600 ° C and only 4.5MPa of the latter.