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首次研究了在Ａｌ２Ｏ３／Ｎｂ的钎焊界面之间加入一层金属Ｍｏ网，可大幅度提高接头的热震抗力，经用Ｎｉ５１Ｔｉ４９钎料焊接后，７００℃淬水后的剩余强度达到了不加网的焊后强度，强度提高了１８０％以上，用Ｃｕ５２Ｎｉ１８Ｔｉ３０钎料焊接并加Ｍｏ网后，７００℃淬水后的剩余强度也提高了１３０％以上。接头断裂特征明显不同，分析认为金属网的加入显著降低了钎焊界面的残余应力。
For the first time, it has been studied that adding a layer of metallic Mo mesh between the brazing interfaces of Al2O3 / Nb can greatly increase the thermal shock resistance of the joints. After welding with Ni51Ti49 brazing filler metal, the residual strength after quenching at 700 ℃ The post-weld strength and strength of the mesh have been increased by more than 180%. After welding with a Cu52Ni18Ti30 solder and adding a Mo mesh, the residual strength after quenching at 700 ° C is also increased by more than 130%. The fracture characteristics of the joints are obviously different. The analysis shows that the addition of metal mesh significantly reduces the residual stress at the brazing interface.