真空扩散钎焊是兼顾扩散焊和钎焊的优点而发展形成的连接工艺。它与真空扩散焊比较,最大的优点是不需要加压,大大地简化了真空设备;而且在高温停留时间比扩散焊短,缩短了钎焊周期。它与一般真空钎焊比较,可把焊料的用量降到最低,焊后不需加工;同时由于在高温停留时间较长,使钎缝内中间相的含量降到最低,从而获得最大的强度和塑性。另外,在真空钎焊方法难以获得最大焊透率的情况 Vacuum diffusion brazing is the connection process that takes into account the advantages of diffusion welding and brazing. Compared with vacuum diffusion welding, the biggest advantage is that no pressure is needed, which greatly simplifies the vacuum equipment. Moreover, the residence time at high temperature is shorter than that of diffusion welding and the brazing period is shortened. It is compared with the general vacuum brazing, the amount of solder can be minimized, without welding after processing; the same time due to the longer residence time in the brazing seam mesophase content to a minimum, so as to obtain maximum strength and Plasticity. In addition, it is difficult to obtain the maximum penetration rate in the vacuum brazing method