本文介绍了对合成金刚石用石墨片进行预处理的方法。研究表明,用已处理过的石墨片可合成出粒度粗、强度高、完整单晶多的金刚石,金刚石中Ni,Mn,Co,Si 的含量明显减少,而氮的含量明显增加。并观察到触媒片两面都能均匀地生长理想的金刚石晶体。该预处理方法不仅提高金刚石的质量,而且有可能为认识石墨转化为金刚石的机理提供一些依据。 This article describes the method of pretreatment of synthetic diamond with graphite sheet. The results show that diamonds with coarse grain size, high strength and complete single crystal can be synthesized from the treated graphite sheets. The content of Ni, Mn, Co and Si in the diamond decreases obviously while the content of nitrogen increases obviously. It was observed that both sides of the catalyst sheet could grow ideal diamond crystals uniformly. The pretreatment method not only improves the quality of diamond, but also may provide some basis for understanding the mechanism of graphite into diamond.