AN ESPECIAL DRIVING FORCE OF DIAMOND CRYSTAL GROWTH IN SOLUTION
AN ESPECIAL DRIVING FORCE OF DIAMOND CRYSTAL GROWTH IN SOLUTION
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发表时间：
2005
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通讯作者：
Hong Shi-ming
中科院分区：
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作者：
Hong Shi-ming
有两种驱动力在金属溶液中的金刚石晶体生长过程中发挥着决定性的作用：它们分别取决于超压和温差。然而，任何人都无法解释烧结金刚石中异常晶粒生长的行为。根据实验结果，一个特殊的驱动力是相当大的，这主要是由于细晶和粗晶之间的表面自由能的差异。因此提出了利用这种驱动力合成大金刚石晶体的想法，并对天然金刚石生长的驱动力进行了讨论。
Two kinds of driving forces are acting definitively in diamond crystal growth processes in metallic solutions; they depend on an excess pressure and a difference of temperatures respectively. However, behavior of abnormal grain growth in sintered diamond cannot be explained by any one. On the basis of experimental results, an especial driving force is considerable, that is chiefly due to the difference of surface free energies between fine and coarse crystals. And so an idea to synthesize large diamond crystal by this driving force is presented, and the driving force of natural diamond growth is also discussed.