Zhengzhou University uses new methods to synthesize high grade w
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Zhengzhou University uses new methods to synthesize high grade w
发布日期：2016-12-12 14:07:46
The day before, Zhengzhou University professor Dan Chongxin team Dr. Lu Yingjie synthesized more than 1.2 carats, color quality and white clarity SI1 grade high quality diamond.
It is reported that the diamond is a refined diamond on earth natural diamond is carbon in the special conditions of high temperature and high pressure in the deep earth (under 300 kilometers below the surface of the 100-, 5- pressure of 7 million ATM, 1200- temperature 1800 degrees Celsius) and certain content and ratio of metal and graphite or carbon after conditions millions of years of practice and become, most volcano or other geological movement was brought to near the surface.
At present, about 2 billion 500 million carats of diamonds have been found on the earth, but the exploration of diamond deposits is often costly. The exploitation of natural diamonds not only consumes a lot of resources, but also may cause irreparable damage to the ecological environment of the earth.
At the same time, some of the diamonds mined in the war-torn areas were put into the war and brought serious disaster to the local people. And synthetic diamond can be carried out in the laboratory, will not destroy the ecology, energy consumption is limited, there is no "blood drill" and other moral original sin, is a green industry. Therefore, it is expected that artificial diamond will gradually become the mainstream of jewelry market.
In addition, people discovered in recent years, in addition to natural material with properties of diamond has the highest hardness, band width, the highest known natural material thermal conductivity, high breakdown field, high saturation electron mobility and other characteristics, it is expected to become excellent candidate materials for the next generation of power electronic devices.
Dan Chongxin said that the current mainstream technology of diamond synthesis is high temperature and high pressure method, but in the process of synthesis, often due to nitrogen or catalyst into the diamond, resulting in more impurities, in power electronic devices and other aspects of the application of obstacles.
To this end, Lu Yingjie and others have made painstaking exploration to develop the process of synthesizing diamond single crystal and carat grade diamond by chemical vapor deposition. The process of synthesis temperature is less than 1000, the pressure less than an atmospheric pressure, at the same time without the use of catalyst in the synthesis process, so as to ensure the purity of synthetic diamond and diamond color and clarity, is expected to be used in the field of jewelry, microwave and terahertz window, Gao Nengli detection, and power electronic devices etc..
It is reported that the diamond is a refined diamond on earth natural diamond is carbon in the special conditions of high temperature and high pressure in the deep earth (under 300 kilometers below the surface of the 100-, 5- pressure of 7 million ATM, 1200- temperature 1800 degrees Celsius) and certain content and ratio of metal and graphite or carbon after conditions millions of years of practice and become, most volcano or other geological movement was brought to near the surface.
At present, about 2 billion 500 million carats of diamonds have been found on the earth, but the exploration of diamond deposits is often costly. The exploitation of natural diamonds not only consumes a lot of resources, but also may cause irreparable damage to the ecological environment of the earth.
At the same time, some of the diamonds mined in the war-torn areas were put into the war and brought serious disaster to the local people. And synthetic diamond can be carried out in the laboratory, will not destroy the ecology, energy consumption is limited, there is no "blood drill" and other moral original sin, is a green industry. Therefore, it is expected that artificial diamond will gradually become the mainstream of jewelry market.
In addition, people discovered in recent years, in addition to natural material with properties of diamond has the highest hardness, band width, the highest known natural material thermal conductivity, high breakdown field, high saturation electron mobility and other characteristics, it is expected to become excellent candidate materials for the next generation of power electronic devices.
Dan Chongxin said that the current mainstream technology of diamond synthesis is high temperature and high pressure method, but in the process of synthesis, often due to nitrogen or catalyst into the diamond, resulting in more impurities, in power electronic devices and other aspects of the application of obstacles.
To this end, Lu Yingjie and others have made painstaking exploration to develop the process of synthesizing diamond single crystal and carat grade diamond by chemical vapor deposition. The process of synthesis temperature is less than 1000, the pressure less than an atmospheric pressure, at the same time without the use of catalyst in the synthesis process, so as to ensure the purity of synthetic diamond and diamond color and clarity, is expected to be used in the field of jewelry, microwave and terahertz window, Gao Nengli detection, and power electronic devices etc..
