A kind of diamond substrate and preparation method thereof

A technology for diamond and diamond micropowder is applied in the field of diamond substrate and its preparation, which can solve the problem of high price of single crystal diamond, and achieve the effects of high mechanical strength, increased growth rate, and improved deposition quality.
CN106830939BActive Publication Date: 2020-08-21湖北碳六科技有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
湖北碳六科技有限公司
Publication Date
2020-08-21

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Abstract

The invention relates to the technical field of preparation of diamond substrates and particularly relates to a diamond substrate and a preparation method thereof. The diamond substrate comprises the following components in parts by weight: 95-99.5 parts of polyimide and 0.5-5 parts of diamond micro-powder, wherein the grain diameter of the diamond micro-powder is 0.05-1000 microns; and the concentration of a polyimide solution is 5%-20%. The preparation method comprises the following steps: adding the polyimide solution into the diamond micro-powder and uniformly mixing to obtain a mixture; filling the mixture into a drying oven and heating and condensing; putting the dried and condensed diamond micro-powder on different types of abrasive paper; and cooling to a room temperature to obtain the diamond substrate. The diamond substrate has the beneficial effects that the cost of an original substrate material needing to be used is low, and equipment and a process are simple.
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Description

technical field

[0001] The invention relates to the technical field of diamond substrate preparation, in particular to a diamond substrate and a preparation method thereof. Background technique

[0002] Diamond has excellent physical and chemical properties, the highest hardness among all known substances, the highest thermal conductivity at room temperature, wide band gap (5.5eV), the highest sound propagation velocity, and high semiconductor The doping property and the optical transparency from the far-infrared region to the ultraviolet region make it have broad application prospects in many fields such as machining, microelectronics, and optics. However, the number of natural diamonds is scarce, and the high-temperature and high-pressure synthetic diamonds are not only expensive, but also the particle size of synthetic diamonds is limited, which prevents the excellent performance of diamonds from being fully utilized. In 1982, Matsumto et al. used chemical vapor depositi...

Claims

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