Aerospace scenario

Core requirements of the scenario

It is required to adapt to working conditions such as high vacuum in space, strong radiation, drastic temperature changes from -270℃ to 200℃, and extreme vibration. The core requirements for the material are extreme lightweight, ultra-high reliability, long lifespan, low thermal expansion matching, and passive cooling capability without fans. The tolerance for material performance is zero, making it the ultimate verification scenario for high-end materials.

Specific applications of the six major products

1. Diamond single crystal/polycrystalline substrate, heat sink: laser chip substrate for inter satellite/satellite ground laser communication terminals, heat sink for high-power RF devices on board satellites. The thermal conductivity of single crystal diamond substrate reaches 2300W/m · K, which can reduce the junction temperature of laser chips by more than 30%, greatly improve the laser communication distance and data transmission rate, and ensure the long-term stability of high-speed data links between satellites. It has been widely applied in China's new remote sensing satellites.

2. Diamond composite heat sink/shell: Used for the heat dissipation shell and heat sink of high-power power modules on board satellites, power devices in satellite attitude control systems, and electronic equipment in deep space probes. The high vacuum environment in space can only dissipate heat through conduction. The diamond molybdenum composite system has strong temperature resistance and a thermal conductivity of up to 700W/m · K, which can achieve passive heat dissipation without fans. Compared with traditional copper heat sinks, the heat dissipation efficiency is increased by 5 times, and the weight is reduced by 60%. It solves the core contradiction between spacecraft heat dissipation and lightweight, and can reduce the equipment failure rate in orbit by more than 50%.

3. M9/M10 copper-clad board, TVG glass substrate: used for satellite high-speed data processing motherboards and high-frequency signal boards in satellite measurement and control systems. Product Dk is stable at 3.0~3.8 Df＜0.002， Adapt to high-speed data transmission and high-frequency measurement and control signals to avoid signal distortion in space environments; At the same time, its high thermal conductivity solves the heat dissipation problem of on-board electronic devices, and its space radiation resistance far exceeds that of traditional FR-4 substrates, ensuring stable operation of the equipment in orbit for more than 5 years.

4. Customized diamond heat dissipation module: an integrated heat dissipation module customized for manned spacecraft, high-power experimental equipment in space station cabins, and spaceborne SAR synthetic aperture radar. Through pre design of thermal simulation, the integration of "heat sink heat dissipation structure interface material" is achieved, which can cope with ultra-high heat flux density of 1000W/cm ², solve the heat dissipation problem in closed spaces and high vacuum environments, and improve the heat dissipation efficiency by more than three times compared to traditional aluminum heat dissipation modules, while reducing weight by 50%.

5. Aluminum based silicon carbide: The core application is in the support base of satellite optical systems, antenna array structural components of spaceborne/airborne phased array radar, and electronic equipment frames of deep space detectors. Its coefficient of thermal expansion (CTE) is precisely matched with silicon chips and optical lenses, which can completely solve the problem of dimensional deformation under temperature fluctuations, ensuring the imaging accuracy of optical systems and the pointing accuracy of radar beams; It has a much higher stiffness than aluminum alloy and a weight reduction of more than 40% compared to titanium alloy, significantly reducing the cost of spacecraft launch. It is the core structural material of the current satellite constellation plan.

6. Quantum diamond: applied in high-precision satellite magnetic measurement systems, spacecraft inertial navigation systems, and deep space exploration of dark matter/gravitational wave detection payloads. A quantum diamond magnetometer based on NV color centers can achieve ultra-high sensitivity magnetic detection at room temperature without the need for low-temperature cooling. Its volume is only 1/100 of traditional superconducting magnetometers, which can greatly improve the accuracy of satellite geological exploration and cosmic ray detection; At the same time, it can be used for high-precision attitude sensing of spacecraft, replacing traditional fiber optic gyroscopes and achieving meter level positioning accuracy without GPS signals, suitable for extreme scenarios in deep space exploration without external navigation signals.