An insulating element for synthetic diamond
A technology for synthesizing diamond and insulating components, which is applied to insulators, electrical components, inorganic insulators, etc., can solve the problems of high power required for synthesis, many impurities in diamond points, and poor thermal insulation effect, and achieves good thermal insulation effect, reduced impurities, and improved quality effect
Active Publication Date: 2016-03-02
山东聊城莱鑫超硬材料有限公司
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Problems solved by technology
The material of the insulating element is dolomite or ceramics, both of which have the disadvantages of low strength, high damage rate during transportation and synthesis; and the insulation effect is poor, and the power required for synthesis is high; the synthetic diamond has many impurities inside
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[0013] An insulating element for synthetic diamond, characterized in that it includes an insulating tube and an insulating sheet, the insulating sheet is buckled on the insulating tube, and the materials of the insulating tube and the insulating sheet are composed of magnesium oxide, zirconium oxide, hexagonal boron nitride and water glass , the weight ratio of magnesia and zirconia is 1:3-3:1, the weight of hexagonal boron nitride is 4-6% of the sum of the weight of magnesia and zirconia, and the weight of water glass is magnesia, zirconia and 10-15% of the sum of the weight of hexagonal boron nitride.
[0014] The specific components are:
[0015] 1. Magnesium oxide 30g, zirconia 90g, hexagonal boron nitride 4.8g, water glass 12.5g, thermal conductivity is 3.657W m -1 ·K -1 , with a resistivity of 10 16 Ω / cm; 2. Magnesia 50g, Zirconia 100g, Hexagonal Boron Nitride 7.5g, Water Glass 18.9g, thermal conductivity 3.350W m -1 ·K -1 , with a resistivity of 5×10 16 Ω / cm; 3. M...
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Abstract
Provided is an insulation element used for a synthetic diamond. The insulation element comprises magnesium oxide, zirconium oxide, hexagonal boron nitride and water glass. The weight ratio of magnesium oxide to zirconium oxide is 1:3-3:1. Weight of hexagonal boron nitride is 4-6% of total weight of magnesium oxide and zirconium oxide. Weight of water glass is 10-15% of total weight of magnesium oxide, zirconium oxide and hexagonal boron nitride. The insulation element is high in intensity, and larger external force can be borne in transportation and synthetic processes so that loss caused by damage is avoided. The insulation element is great in heat preservation effect, and a heat conduction coefficient is less than 3.657W.m-1.K-1 so that temperature of the synthetic process can be maintained, and synthetic quality of the diamond is enhanced. Internal point impurities of the diamond synthesized by adopting the insulation element are obviously reduced. Resistivity of the insulation element is greater than 1016ohm / cm so that the insulation element is an ideal insulation material.
Description
technical field [0001] The invention relates to a diamond synthesis device, in particular to an insulating element for synthesizing diamond. Background technique [0002] Synthetic diamond is synthesized under high temperature and high pressure, specifically through the indirect heating and high pressure synthesis of the synthesis block in the six-sided top press. A composite stem is arranged inside the composite block, a steel cup is placed on the periphery of the composite stem, an insulating element is placed on the periphery of the steel cup, and a heating element is placed on the periphery of the insulation layer. The insulating element is composed of an insulating tube and an insulating sheet. The material of the insulating element is dolomite or ceramics, both of which have the disadvantages of low strength and high damage rate during transportation and synthesis; and the insulation effect is poor, and the power required for synthesis is high; the synthesized diamond...
Claims
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IPC IPC(8): H01B3/10H01B19/00B01J3/06
Inventor 蔡立超范建朝许静张德甲
Owner 山东聊城莱鑫超硬材料有限公司