中文摘要：

为了开展CVD金刚石生长面的浸润性研究,采用直流电弧等离体喷射技术,制备了纳米金刚石自支撑膜、微米金刚石自支撑膜以及毫米单晶金刚石.结果发现：对于相同的金刚石生长表面,接触角按甘油、饱和葡萄糖水溶液、饱和NaCl水溶液和蒸馏水的顺序逐渐增大,表明所制备金刚石的表面对各液体的浸润性逐渐变差;而对于同种滴液,接触角在不同的金刚石表面表现出不同的大小,说明不同的CVD金刚石对于同种液体具有不同的浸润性.而表面能的计算结果表明纳米金刚石自支撑膜生长面的表面能最高,其次是微米自支撑金刚石膜,而单晶金刚石的表面能最小.

英文摘要：

To study the wettability of CVD diamond＇s growth surfaces,DC arcjet plasma technique was applied to deposit nano-crystalline diamond self-standing film,micro-crystalline diamond self-standing film and millimeter-sized single crystal diamond.The experimental results show that the contact angle depended on the sort of droplet under the condition of the same diamond surface.It increased according to the order of by glycerol,glucose saturated solution,NaCl saturated solution and pure water.For the same sort droplet,the contact angle was different on different diamond surface.The calculated surface energy values show that single crystal possessed the smallest value,and nanocrystal film possessed the largest value.The surface energy value of microcrystal film was between that of single crystal and nanocrystal.