Low damage cutting and bonding process of high performance composite materials and its systematizing

研究陶瓷/金属复合材料的低损伤切削与连接工艺，以建立高性能材料的高可靠性材料工艺。采用超高压水磨料水射流切割方法进行切割。和固相结合的复合材料的相对低温的连接过程，以实现低热影响的焊接接头。结果表明，它是明确的悬臂梁方法与计算机断层扫描类型的数据处理程序，具有较高的适应性，以测量切割过程的水射流的高压分布模式。然后，结合水射流动量分布的测量结果，用抓拍照片对水射流结构进行了分析，从而明确了射流结构与切割表面质量之间的关系。因此，使用超长喉道长度型磨料喷嘴有利于实现无热影响的高性能切割表面。在固相连接中，以金属沉积陶瓷为基体，研究了Al_2O_3陶瓷与Ti的高性能连接过程。在本研究中，蒸发方法用于沉积。用俄歇分析评价接头强度。然后，澄清了如果完成沉积，则接合部分变得完好。此外，还对两种表面的拟合工艺进行了研究，指出了表面粗糙度对拟合的重要影响，最后利用这两种考虑结果设计了低损伤的切削和连接工艺。

Low damage cutting and bonding process of ceramics/metal composite material has been investigated to establish the high reliability material processing of high performance materials. A abrasive waterjet cutting method with ultra high pressure water was employed for cutting procedure. And a solid phase bonding for relatively low temperature joining procedure of the composite materials to realize low heat-affected weld joint.As a result, it was clarified that a cantilever method with a data treatment procedure of computer tomography type has a high adaptability to measure the high pressure distribution pattern of the waterjet for cutting process. Then, the waterjet strictures were examined with snap photos an addition to the measured momentum distribution of waterjet, so that the relationship between the jet structure and the cut surface quality was made cleared. So, it was concluded that the use of ultra long throat length type of abrasive nozzle is useful to realize high performance cut surface without heat-affected part.In the solid state bonding, a high performance bonding procedure of Al_2O_3 ceramics to Ti was examined with a metal-deposited ceramics for substrate. In the present study, evaporation method was employed for the deposition. The joint strength was evaluated with the Auger analysis. Then, it was clarified that the joint part becomes sound, if the deposition was done. Moreover, the fitting process of both surfaces was examined, so that effect of surface roughness was indicated to be important for the fitting.At last, it was designed the low damage cutting and joining process by using both consideration results.