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一、前言金刚石不但是美丽名贵的装饰品,千百年来受到人们的喜爱,而且具有良好的物理、化学性质,受到工业上的重视。它硬度极高,导热性好,有均勻的光学性质,绝缘性好,耐腐蚀,化学稳定性好。这些性质使它在工业上非常有用,可以说工业上不可以没有金刚石。几千年前的炼金术士想把贱金属变成贵金属的愿望没有实现,现代科学家却实现了普通石墨到金刚石的转变。不过,最早的人工合成金刚石的工艺过程,需要极高的压力和温度。图1清楚地表示了这个过程。不难看出,从石墨到金刚石的转变条件是极为苛刻的,一般条件下是难以实现的。近年来发展起了气相合成法。这种方法比起上述方法要简单的多。它主
First, the foreword Diamond is not only beautiful and precious decorations, loved by thousands of years, but also has good physical and chemical properties, subject to industrial importance. Its high hardness, good thermal conductivity, uniform optical properties, good insulation, corrosion resistance, chemical stability. These properties make it very industrially useful, arguably industrial diamond-free. The desire of alchemists thousands of years ago to change from base metal to precious metal failed to materialize, and modern scientists realized the shift from ordinary graphite to diamond. However, the earliest artificially synthesized diamonds require extremely high pressures and temperatures. Figure 1 clearly shows this process. It is not hard to see that the transition from graphite to diamond is extremely harsh and difficult to achieve under normal conditions. In recent years the development of the gas phase synthesis method. This method is much simpler than the above method. It’s Lord