Synthesis method of superhard material
A synthesis method and technology of superhard materials, applied in chemical instruments and methods, ultra-high pressure process, chemical/physical/physicochemical process of energy application, etc., can solve the problem of high cost of ultra-high pressure and high temperature equipment and clean synthesis environment , difficulties and other problems, to achieve the effect of easy large-scale industrial production, clean synthesis environment, and large synthesis chamber
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[0069] A method for synthesizing superhard materials, comprising the steps of:
[0070] The precursor material is heated to a high temperature and a magnetic field is applied to convert the precursor material into a superhard material, which includes diamond and cubic boron nitride, and further, can also include nitrogen carbide (C 3 N 4 ).
[0071] Heating the precursor to a high temperature is to make the precursor reach a certain thermodynamic condition; at the same time, a magnetic field is applied to the high-temperature precursor, and the magnetic field acts on the high-temperature precursor to generate a magnetodynamic condition. When the thermodynamic condition and the magnetodynamic condition When the sum of conditions reaches the energy level jump of the precursor, the precursor transforms into a superhard material. It is the inventor who defines the energy level transition energy generated by the magnetic field acting on the high-temperature precursor as the "magn...
Embodiment 1
[0102] Such as Figure 5 As shown, using the magnetic field high-temperature solvent method, under normal pressure (P=0), the precursor is indirectly heated and a magnetic field is applied to synthesize superhard material single crystal products. Mix the precursor and the catalyst to make a cylinder, put it in a container, the container can isolate the air, and avoid the oxidation of the precursor and the synthesized superhard material; this embodiment uses an electric heater on the outside of the container to achieve indirect heating of the precursor. Heating; there is also an insulation layer on the outside of the heater to avoid and reduce heat loss; at the upper and lower ends of the precursor, there are also a pair of magnetic poles, whose magnetic force lines pass through the precursor and apply a magnetic field to the precursor;
[0103] Synthetic diamond: graphite + catalyst, heating temperature: 1380-1600°C; magnetic field strength 6-10mT, time 10 minutes;
[0104] S...
Embodiment 2
[0109] Such as Figure 9 As shown, using the magnetic field high-temperature solvent method, under normal pressure (P=0), the combination of heating and magnetic field is applied to the precursor for the synthesis of superhard material single crystal products. Mix graphite and metal catalyst to make a cylinder, put it into a container, the container can isolate the air, and avoid the oxidation of the precursor and the synthesized superhard material; there is a heater on the outside of the container to achieve indirect heating of the precursor; indirect heating There is also an insulation layer on the outside of the device to avoid and reduce heat loss; outside the insulation layer, there are at least a pair of magnets that can apply a magnetic field to the precursor; above the precursor, there is a plasma gun moment, which is powered by a plasma power supply. The anode is connected to the lower end of the precursor; an electric circuit is formed by forming a plasma arc on the ...
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