用热解CVD装置研究了甲烷浓度、基底温度、室压对钢渗铬沉积金刚石膜的影响.结果表明,甲烷浓度越低,沉积得到的金刚石膜的晶形越好,甲烷浓度超过0.8%后,金刚石的形貌呈"菜花状";基体温度高时,难于在渗铬层上形成连续的金刚石膜,但基体温度高所得的晶形较好;室压越高,金刚石的形核密度越高,但随室压的升高,金刚石的形貌变差.菜花状金刚石膜是由大量二次晶核长大的微晶金刚石晶粒组成,含有较多的非金刚石碳相.
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