最近,日本金属学会秋季大会发表了一项日立机械公司研究成功的陶瓷和金属结合的新技术。该项技术特别适宜应用于生产汽车用的涡轮充电器、压缩机、轴和发动机等部件。将陶瓷作为机械结构件用到生产中,陶瓷和金属材料的结合技术应有一定的保证。但是由于陶瓷和金属材料的热膨胀系数显著不同,不仅结合困难,而且给加工带来难题。先前采用的结合技术一般有①将金属喷涂在陶瓷表面后,进行钎焊;②热压配合等机械结合方式; Recently, the Japan Society of Metals autumn Assembly published a Hitachi machinery company to study the successful combination of ceramic and metal technology. This technology is particularly suitable for the production of automotive turbo chargers, compressors, shafts and engines. As a mechanical structure of ceramics used in the production, the combination of ceramic and metal materials should have some guarantee. However, due to the significantly different coefficients of thermal expansion of ceramic and metal materials, it is not only difficult to combine, but also poses problems for processing. Previously used bonding technology generally ① metal sprayed on the ceramic surface, the brazing; ② thermocompression and other mechanical combination;