Our country synthesizes diamond single crystal to consider to gain new headway

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Jilin college researcher considers to discover: Gradient method of temperature of high temperature high pressure grows in the process of single crystal of lapidary class diamond, although lie inside diamond stability area, the recrystallization black lead that often discovers metastable state however exists. This research discovers, as a kind of crystal, the separate out of many recrystallization black lead and grow to the growth of single crystal of lapidary class diamond speed has relatively apparent inhibition, and recrystallization black lead is in more easily higher temperature appears inside synthetic area. For example, use NiMnCo accelerant undertakes single crystal of lapidary class diamond synthesizes a process in, rise as what synthesize temperature, when a large number of redundant carbon sources no longer with diamond separate out of initiative nucleus form, however with many a form of shape recrystallization black lead around it is all round crystal when, the growth of crystal speed had substantially reduce, from about 3 when opposite low temperature.

0mg ／ H falls 1 when higher temperature.

0mg ／ H. Boracic diamond of current mix into is the heat of research, but the article of the diamond that synthesizes boron of mix into oxidation about using Fe70Ni30 catalytic agent is not much however. In experimental lieutenant general boron of certain proportional oxidation adds black lead - Fe70Ni30 mixes in pulverous system even, high temperature high pressure is used to synthesize boracic diamond of mix into oxidation on 6 tops press. Experimental result makes clear, the oxidation boron that adds certain amount is right the synthesizes pressure and temperature impact of diamond is not big, but diamond of boracic complex of mix into oxidation and diamond of not impure complex are on color and exterior form appearance have very big distinction. Diamond crystal has a lot of striking features, but it does not suit conduction current: Foregone the pyramid shape crystal lattice that comprises by carbolic atom is dielectric. But be in some closer year, the measure that is called adulteration through introduces ab extra atom, also can make diamond electric. This method is relatively time-consuming nevertheless, efficiency is not very tall. Erlangen - presiding professor Dr. LotharLey and his research group put forward the experimental physics of Nuremberg university another kind of impure method: The element of C60 of diamond surface precipitation in hydrogenous saturation. CNC Milling CNC Machining