本文用显微镜和扫描电镜,研究了金属与合金对小颗粒人造金刚石浸润角的测定方法。研究了非过渡族非碳化物形成元素(Cu、Sn、Pb、Al、Ag)及CuSn合金,对小颗粒人造金刚石的浸润性能。同时研究了在Cu、Cu—Sn合金中加入过渡族碳化物形成元素Ti时,对浸润角的影响,证实了浸润角随含钛量增加而减小的规律。 In this paper, microscopic and scanning electron microscopy were used to study the method of determination of the infiltration angle of small particles synthetic diamond by metal and alloy. The infiltration properties of non-transitional non-carbide forming elements (Cu, Sn, Pb, Al, Ag) and CuSn alloy on small particle synthetic diamond were studied. At the same time, the effect of adding transitional carbides to Ti and Cu on the wetting angle was also studied. The results show that the wetting angle decreases with the increase of Ti content.