Based on the low coefficient of thermal expansion and the highest thermal conductivity at room temperature, the single crystal CVD diamond has two main thermal applications: 1) centralized heat dissipation of large areas, such as TR components, microwave power components and high power laser components; 2) point heat dissipation for thermal emission units, such as Gallium nitride(GaN) devices.
Characteristic | Description | Related Applications | |||
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Thermal properties | Thermal conductivity | >1900 Wm-1K-1 | Heat sink, heat exchanger, heat sink (applied to high-power devices) |
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Coefficient of thermal expansion | 193 K | 0.4×10-6/K | |||
293 K | 0.8×10-6/K | ||||
400~1200 K | (1.5-4.8)×10-6/K | ||||
Isobaric molar heat capacity | 1800 K | 24.7J/(mol·K) | |||
3000 K | 26.3J/(mol·K) |