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采用“铆钉法”制备了界面为曲面的Ti-Ni二元扩散偶,并将扩散偶置于真空退火炉中进行热处理。利用彩色金相技术观察在500~700℃范围内真空烧结不同时间时界面的扩散情况。结果表明,扩散层的厚度随烧结温度的提高和保温时间的延长而增厚;扩散层由不同的亚层组成。
Ti-Ni binary diffusion couple with curved interface was prepared by using the “riveting method”, and the diffusion was stored in a vacuum annealing furnace for thermal treatment. The diffusion of interface at different time of vacuum sintering in 500 ~ 700 ℃ was observed by color metallographic technique. The results show that the thickness of the diffusion layer increases with the increase of the sintering temperature and the holding time. The diffusion layer consists of different sub-layers.