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High purity graphite generally refers to the amount of carbon containing more than 99.99% of graphite in the organizational structure can be divided into three categories: coarse grain structure, fine grain structure and fine grain structure. The base material for integrated circuits is mainly single crystal silicon chip, silicon single crystal growth process is currently mainly used in Czochralski (CZ) method, and other methods of magnetic Czochralski method (MCZ), regional (FZ) method and double crucible pulling method, the total amount of single crystal silicon 80% monocrystalline silicon with the global electronics industry. Czochralski graphite furnace is monocrystalline silicon using consumables, high purity graphite materials into the heating system of monocrystalline silicon furnace. In 2005 China needs to be directly drawn…
Graphene is a two-dimensional crystal, the common people of the graphite is plane carbon atoms stacked by a layer with honeycomb ordered formed, graphite layer interaction is weak, it is easy to form each other off, graphite sheet. When the graphite sheet is stripped into a single layer, it is only a single layer of carbon atoms. The latest discovery of graphene is one of the most effective ways to prevent corrosion. Commonly used polymer coating is very easy to be scratched, reduce the protection performance; and graphene to do the protective film, significantly slow down the corrosion rate of metal, more robust anti damage. Graphene is not only used in the electronics industry star, traditional industry prospects are limitless.…
Graphite is a covalent semiconductor and metal intermediate half of the metal, inherently good conductivity, thermal conductivity, and most of the molten metal does not react, high temperature state is not deformed (up to 27.. C) and with the temperature increases the electrical conductivity and thermal conductivity, strength is significantly increased (mechanical strength at 1800 C is two times at room temperature), low thermal expansion coefficient than metal, as the ideal material can be widely used in powder sintering industry. The use of graphite mold powder sintering industry began in the early 70s, accompanied by geological exploration, coal exploration and mining, oil exploration and drilling, highway cutting, especially the rapid development of granite and marble mining and cutting industry, demand…
