论文部分内容阅读
据De Beers公司C·Phaal博士介绍,该公司在改进制造金刚石高压/高温合成工艺方面取得了突破性的进展,现已能经济地生产出最大为4克拉(0.8克)的高品级金刚石单晶。据认为这已达到了目前经济合理地生产金刚石单晶的极限。这种大颗粒金刚石单晶是在特殊设备上制造的,并已能批量生产;如今主要用作拉丝模的坯料。采用激光可将这种金刚石单晶切成所需形状(如片状),还可用其制造单晶金刚石刀具、砂轮修正器和手术刀等。此外该公司在金刚石CVD涂层工艺方面也取得显著成效,应用范围不断扩大,将给硬质合金,甚至多晶金刚石市场带来压力。
According to Dr. De Phaers, Dr. Phaal, the company made a breakthrough in improving high-pressure / high-temperature synthetic diamond manufacturing processes and has been able to economically produce high-grade diamond single crystals up to 4 carats (0.8 grams) . It is thought that this has reached the limit of producing diamond single crystals economically and reasonably. This large-grain diamond single crystal is produced on special equipment and is already mass-produced; today it is mainly used as a raw material for drawing dies. This laser can be cut into the diamond single crystal shape (such as flake), can also be used to manufacture single-crystal diamond tools, wheel reamers and scalpels. In addition, the company has achieved remarkable results in the diamond CVD coating process, expanding its range of applications and putting pressure on the market for cemented carbide and even polycrystalline diamond.