Research Article
Research and Implementation of a 1800°C Sapphire Ultrasonic Thermometer
Table 1
The characteristic parameters of sapphire in room temperature (25°C).
| | Component | Type | Melting point | Mohs hardness | Density | Elastic modulus | Thermal conductivity |
| | α-Al2O3 | Single crystal | 2053°C | 9 | 3.99 g/cm3 | 310 GPa | 0.43 W/cm·K |
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