Your position: Home > News > Industry News > China successfully developed new superhard material hardness twice the natural diamond
Natural diamond has been recognized as the hardest material in nature, but because of the poor thermal stability, leading to its application is limited in terms of cutting, drilling and the like. After 1955 the US General Electric Company use high temperature and pressure technology synthesized in the laboratory artificial diamond synthesized harder than natural diamond material into the common dream of the scientific community and industry. 2013, Tian Yongjun team first use onion structure under high pressure boron nitride precursor successfully synthesized nano-twinned structure CBN, its hardness exceeds the artificial diamond. The study obtained by the synthetic single crystal diamond in hardness than cubic boron nitride material, breaking the people's material hardening mechanism of traditional understanding, to find a new way to a synthetic high-performance super-hard materials.
So far, through pressure graphite, amorphous carbon, glassy carbon and carbon 60 and other carbon precursor phase transition can not get nano twinned diamond. To this end, Tian Yongjun team and its collaborators began to study the phase transition of carbon onions under high temperature and pressure. At lower temperatures, the formation of carbon nano-onions twinned diamond cubic structure, it is also common to give birth to a monoclinic structure of diamond; diamond nano-twinned structure at higher temperatures, carbon onions turned into a single phase, The average thickness of the twins as small as 5 nanometers. This nano-twinned diamond has never had the hardness and stability. The findings will have broad prospects in the manufacturing of unique properties of new materials.
Nanan Broadway Machinery Co. www.diamondtools.top
Nanan Broadway Machinery Co., Ltd. is located in the Art Institute of Chicago, known as "China Stone City" said Quanzhou, Fujian Province Water Town, is specialized in the development, production and sales of diamond blades, diamond saw blades and other diamond tools, diamond cutter head cold press, diamond saw blade welding racks and other products of export-oriented manufacturing enterprises. Using international advanced technology, high-quality imported spare parts. Machinery and Tools product looks, easy to operate security, stable performance, is the diamond tool industry product of choice. Professional development, production and sales and service team, has independent R & D and production: the diamond cutter head cold press, diamond saw blades welded frame, diamond saw blade and other products.
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