2013年7月30日星期二

film diamond

 Diamond film synthesis technology and applied research on a global scale has grown rapidly, forming a "diamond film hot." In ten years, the development of gas-phase synthesis method to twenty kinds, general hourly rate of deposition is only 1 ~ 2um, how to accelerate the  deposition rate has been one study. Recent developments in the deposition rate to 100um / h or more, up to 930um / h. We call thick diamond. Diamond is a pure diamond thick, close to the hardness of natural diamond, and PCD, PCDN diamond powder is mixed with the binding agent is sintered, so by the binding agent of the concrete diamond blades  hardness, the hardness as the former. China has successfully mastered this technique, the maximum sediment thickness reaches 2.3mm. Has now been commercialized into the international advanced level.
PCD diamond thick film is that no different from the binding agent, is a pure diamond, the diamond core drills  higher its hardness, and natural diamond different, it has isotropic, low cost, so in many respects replaced PCD. Will be used for wire drawing dies uniform wear, so much better than the quality of the wire wire drawing natural diamond dies. If the deposition further improve the quality in ultra-precision machining is also the possibility of replacing natural diamond, the field of ultra-precision so popular attention.
In short, diamond and superhard materials as superior performance, application constantly expanding, from the developed to the  cup grinding wheels metal processing optical glass processing, stone processing, ceramics processing, processing of brittle materials is difficult for traditional processing areas, for a variety of industrial development will play a huge role in promoting broad prospects.

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