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研究了直流等离子体激光化学汽相沉积（ＣＶＤ）法合成金刚石膜的断裂强度。利用压力爆破技术测量了圆形金刚石膜的断裂强度。实验结果表明，断裂强度与金刚石颗粒大小、膜厚度、圆半径、甲烷浓度及衬底温度有密切的依赖关系，并对这些结果进行了讨论。The fracture strength of Polycrystalline diamond films produced by DC plasma CVD is investigated. The fracture strength of circular diamond film was measuned by a burst pressune technique. Experimental results have shown that the fracture strength is considerably dependent on grain size, sample thickness, apertune radius, methane concentration and substrate temperature. The results have also been discussed.
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