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通过透射电镜、扫描电镜、Ｘ射线研究了Ｎｉ－Ｔｉ高温钎料对Ａｌ２Ｏ３陶瓷与金属Ｎｂ的连接机理。发现在Ａｌ２Ｏ３一侧的反应层中，富集了高浓度的Ｏ原子和Ｔｉ原子，形成了极其细小的微晶ＴｉＯ薄层，其平均晶粒尺寸小于２７ｎｍ，ＴｉＯ以ＦＣＣ结构和ＢＣＣ结构两种晶相混合在一起。反应界面中的Ｏ原子由表层Ａｌ２Ｏ３陶瓷通过扩散脱附而获得。根据反应界面的Ｏ原子与Ｔｉ原子的扩散特点，提出了Ａｌ２Ｏ３陶瓷与活性Ｔｉ原子之新的界面反应机理。并对反应过渡区各相的结构进行了标定，确定了反应界面复合过渡层的微观结构及相的类型。
The connection mechanism between Al2O3 ceramic and Nb metal was studied by TEM, SEM and X-ray. It was found that in the reaction layer on the Al 2 O 3 side, a high concentration of O atoms and Ti atoms were enriched and an extremely fine microcrystalline TiO thin layer was formed with an average grain size of less than 27 nm. The TiO was mainly composed of FCC and BCC structures Crystalline mixed together. The O atoms in the reaction interface are obtained by diffusion and desorption of the surface Al 2 O 3 ceramics. According to the diffusion characteristics of O atoms and Ti atoms in the reaction interface, a new interface reaction mechanism between Al2O3 ceramics and active Ti atoms was proposed. The structures of each phase in the reaction zone were calibrated, and the microstructure and phase type of the composite transitional layer were determined.