Abstract Hebei Plessman Diamond Technology Co., Ltd. is a company specializing in the production of high quality CVD diamonds jointly invested by Hebei Academy of Sciences, Institute of Laser Research of Hebei Academy of Sciences and Beijing University of Science and Technology. It is mainly engaged in low temperature plasma and CVD diamond film. ...
Hebei Presman Diamond Technology Co., Ltd. is a company specializing in the production of high quality CVD diamonds jointly invested by Hebei Academy of Sciences, Institute of Laser Research of Hebei Academy of Sciences and Beijing University of Science and Technology. It is mainly engaged in low temperature plasma and CVD diamond film technology. Research and development, has undertaken the "Eighth Five-Year", "Ninth Five-Year", "Tenth Five-Year" period project "Development of key equipment for diamond film preparation" and "Preparation, processing and application of large-area high optical quality diamond film" "Other topics, in addition to a number of major projects in Hebei Province and the Natural Science Fund Project of Hebei Province. 
Hebei Presman Diamond Technology Co., Ltd. participated in the 2nd Third Mill Exhibition
CVD diamonds produced by Presman are mainly used as grinding wheel blanks, wire drawing core blanks, optical windows, heat sinking substrates and tool blanks. CVD diamond wire drawing core, wheel dresser blank and diamond heat sink sheets of various sizes can be provided in batches. Optical grade diamond film can be customized according to user requirements. The deposited diamond film has a diameter of up to 200 mm, a thickness of up to 3 mm, and a thermal conductivity of up to 20 W/cm.K.
CVD diamond wire drawing core
CVD diamond dresser blank
The company's CVD diamond produced by DC arc plasma spraying is a pure diamond with polycrystalline structure. It does not contain any metal and non-metallic binders. It has a translucent appearance and has similar wear resistance and thermal stability to natural diamond. Sex, very suitable for grinding wheel dressing tools. The thermal conductivity of the product is greater than 8W/cm.K, and it also has the characteristics that the wear resistance does not change with the direction, the laser cuts into strips, and the trimming performance is always unchanged.
Thermal grade CVD diamond film
With the support of the national “863†program, the company has been engaged in the research and development of chemical vapor deposition (CVD) diamond for more than ten years. It has successfully developed a DC plasma jet CVD equipment with independent intellectual property rights. The diamond produced by this equipment is used. The membrane has the characteristics of high thermal conductivity, good mechanical strength and low cost. At present, a variety of grades and specifications of diamond film heat sink sheets are available, with a thermal conductivity of up to 1800 W/cm.K. The company offers a range of CVD diamond film heat sinks that are precisely machined and metallized for a wide range of thermal applications. The main application areas include: laser diodes, laser diode arrays, high-power semiconductors and microwave devices.
An important property of CVD diamond is that it has a very high thermal conductivity, and the thermal conductivity of diamond is five times that of copper at room temperature. At the same time, it is an excellent insulating material, so it is possible to use a diamond film to make a heat sink material for high-power optoelectronic components.
The current main application of thermal grade CVD diamonds is the heat sink (heat sink) of high power semiconductor diode lasers or diode laser arrays, mainly used for optical communication (optical transceivers) and military. At present, the output power of high-power diode laser arrays has reached more than 1 kW, not only in the military, but also in civilian technology in the future will be widely used (such as laser processing).
The diamond package of the semiconductor chip is an application field with a very high market potential, and there is no technical difficulty. The main problem is the performance price ratio of the product. For ordinary LSI chips, CVD diamond film packaging is economically uneconomical. The main market is developing high-power (Power ICs) or high-frequency (microwave devices) or radiation-resistant special high-value semiconductors. Device package.
The thermal conductivity of the CVD diamond film produced by Presman using the DC plasma jet method has reached 20W/cm.K, which fully meets the requirements for heat dissipation in military and civil technology and in certain special fields.
Optical grade CVD diamond
Diamond's unique wide-band transmittance, good thermal conductivity and high hardness make it suitable for demanding optical window applications. Examples include high-power infrared laser windows, high-power microwave windows, and demanding, durable windows. The company's CVD diamond window has the following characteristics: wide infrared transmission band, ideal visible and ultraviolet transmission curve, excellent thermal conductivity, low heat dissipation in the infrared region, low thermal expansion coefficient, and can be applied in the vacuum field.
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