摘要
藉助SEM和MICRO RAMAN ,我们研究了在退火和在镍衬底上金刚石形核中甲烷CH4 的影响。CH4 的浓度分别为 0 % ,0 5 % ,1 5 %和 2 5 % ,其中当甲烷浓度为 1 5 %时 ,金刚石在镍衬底上金刚石形核密度为 3× 1 0 8/cm2 ,这个结果高于以前的结果。金刚石膜的质量是好的。
The effect of CH 4 for density and quality of diamond nuclei on nickel substrates are studied by SEM and Micro-Raman in the high-temperature annealing process. If we change the concentration of CH 4:0.5%,1.5% and 2.5%, the quality of diamond nuclei will be improved, in which the 1.5% CH 4 concentration is found to be best fit for diamond to nucleate 3×108/cm2 on nickel substrates. the density of diamond nuclei is higher than the density of nuclei on nickel substrates in previous works and the quality of diamond is good.
出处
《光散射学报》
2002年第4期190-197,共8页
The Journal of Light Scattering
基金
国家自然科学基金资助 (编号 :5 0 0 72 0 45 )