Graphite,Carbon,Beijing carbon sanye

Diamond filed, people will think of the dazzling, flashing bright scenes, as the owner of the dazzling activities. But its expensive price, most people can only be discouraged. Nevertheless, people still long for the diamond. You know the diamond is? It is the chemical composition of carbon (C), natural diamonds by the diamond after pondering before described as "diamonds." Natural diamonds are very rare in the world is greater than the weight of 1000 kt (1 gram = 5 carats) of diamonds, only 2, more than 400 karats of diamonds, only more tablets, so far China's biggest diamond found in heavy 158.786 kt, which "Chang Lin Diamond." Scarcity, because to do, "Diamond" natural diamond is rare, people wanted to "artificial" diamond to replace it, and this naturally thought of Diamond's "twin" brother - the graphite.
Diamond and graphite are the chemical composition of carbon (C), "allotrope." In this call know they have the same "quality", "shape" or "sex" is different, and there is a huge difference between that diamond is the hardest material, and the graphite is one of the most soft material.
Graphite and diamond hardness difference is so great, but people can still hope that the synthetic method to obtain the diamond, graphite because of the natural world (carbon) reserves are very rich. However, if the carbon graphite into diamond like carbon arranged, is not so easy. Graphite 5-6 million in atmospheric pressure ((5-6) × 103MPa) and 1000-2000 degrees Celsius temperature, the use of metal iron, cobalt, nickel catalysts, and so on do make graphite into diamond.
At present, the world has been more than a dozen countries (including China) are a synthetic diamond. However, such as diamond particles are small, the main purpose is to do abrasives for cutting and geology, oil drilling with the drill bit. At present, the world's diamond consumption, 80% of man-made diamond is mainly used in industry, it is far more than the output of natural diamond production.
The first synthetic diamond particles and black, 0.5mm size, weighing about 0.1 kt (for the gem diamonds in general can not be less than the minimum 0.1 kt). Now the development of China's major diamond particles up to more than 3mm, the United States, Japan, 6.1 Kela Duo has been made of diamond. We have said from Graphite in diamond, "flying" out of gem-quality man-made diamonds will in the near future supply in the market.