How to produce a synthetic diamond

American physicist P? W? Bridgman massive support to create high pressure high temperature devices for the synthesis of synthetic diamond material foundation. Shortly

thereafter, another member of superhard materials CBN come out. China in 1963 by several trillion Newton Institute in cooperation 2

Synthesized on both sides of the diamond anvil press, 1965 in the laboratory to obtain small particles of cubic boron nitride, currently the vast majority of

industrial synthetic diamond produced using this technology, people often referred to as a static high pressure high temperature technology . Furthermore it later

Another invention of synthetic diamond technology - explosive synthesis techniques, the use of high temperature and pressure generated by the explosion of synthetic

diamond. Synthesized in this way very fine diamond particles, is used as a diamond polishing powder and grinding paste.
After the advent of synthetic diamond, the rapid expansion of its field of application is mainly made of various tools. Their application from the initial geological

exploration soon extended to stone processing, energy development, water conservancy, electric power, construction, roads, airports and other engineering and precision

machining, wood processing,

Rubber, glass, special ceramics, optics and the automotive industry and other direction. The use of diamond tools for the development of various fields have had a

profound impact, the most important is the production efficiency, allowing for the increasing demand for industrial diamond. Nearly 20 years, the world

Diamond and product development are in the 12 percent average annual growth rate, far higher than the growth rate of industrial development, it is predicted that for

quite a long time to remain above 8% growth rate. Relevant data show that per capita consumption of a country's industrial diamond certain extent

Degree reflects the level of industrial development of the country. Cubic boron nitride (CBN) is also very optimistic about the prospects for the application of its

superior physical, chemical and mechanical properties, especially for iron-group metal materials processing, which are complementary and diamond for processing hard

and brittle non-metallic materials.
According to statistics, the world's annual production of synthetic diamond over one billion kt (1 kt = 200 mg), far higher than the tens of millions of carats of

natural diamonds mined. Ours is a big country of diamond production, production accounts for over 50% of world production. However, China has been the hinge

Chain cubic press as the main production equipment (the number of the total production equipment more than 95%). Due to equipment capacity and conditions, the current

output is mainly low and middle diamond, product oversupply, exports less competitive. Study of the non-artificial crystals

Graduate School developed with independent intellectual property rights on both sides of the top 25 trillion Newtonian synthesis equipment and technology, based on

domestic resources, with its own characteristics, after nearly 10 years of industrial production, mature technology, the production of diamond quality and stability,

and performance is quite similar foreign products .
The application of the current diamond watch, people just use their high hardness properties. Diamond also has many other excellent properties, such as the fastest

speed of sound, the most appropriate wavelengths, the highest thermal conductivity, high Young's modulus, etc. These characteristics are being developed materials

Application. Next period of time in addition to the regular production of general tools diamond, the diamond will be primarily one large and one small two aspects of

development. Large diamond crystal is further to the large size of the development, the largest known industrial-grade single crystal has reached 38? 4 kt, large scale

Inch single crystal synthetic diamond on the development of many excellent properties is very important. Little is more fine-grained synthetic diamond, such as nano-

diamond, many research institutions in carrying out research and development of nano-diamond, has come on the market, but at present

Still in the experimental stage, higher production costs. Such as Japan, the use of nano-diamond carbon control into a color display. Furthermore nanodiamonds in

energy, life sciences and other fields are also promising. It is obvious that the polycrystalline diamond is not only an important structural materials are

Is a great application prospects functional materials, it is the 21st century, many of the most active areas of materials research one of the materials.