Active Member
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[China]
Address: Rm 201 Building 6, South Commercial Zone, Xueqian Rd and 1st South Ring, Dengfeng, Henan, China
Contact name:Yuwei, Chen
SPARK INDUSTRY (HENAN) CO.,LTD |
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Customized Industrial Ceramics Square 96% Alumina Ceramic Plate Zirconia Ceramic Setter Plate
Al 2O 3 | ZrO2/Y2O3 | ZrO2/MgO | SiC | Si3N4 | |
| Physical properties | |||||
| Density (g/cm3) | 3,9 | 5,9 | 5,75 | 3,2 | 3,27 |
| Molecular weight (g/mole) | 102 | - | - | 40,1 | 140 |
| Maximum service temperature air (°C) | 1700- 1800 | 1500 | 1000 | 1500 | 1200- 1500 |
| Mechanical properties | |||||
| Hardness (Mohs) | 9 | - | - | 9 | - |
| Modulus of elasticity (GPa) | 300-400 | 200 | 200 | 420 | 170-220 |
| Poisson's ratio | 0,25 | - | - | 0,14 | 0,25-0,26 |
| Fracture toughness (MPa.m1/2) | 2-3 | 7-13 | 6-10 | 2,5-3,5 | 3,5-5 |
| Electrical properties | |||||
| Dielectric constant | 9-10 | - | - | - | 10 |
| Electrical resistivity at 20°C (Ohm.cm) | >10 14 | 10 13-10 14 | >10 10 | 10 2-10 6 | >10 7 |
| Dielectric strength (kV/mm) | 10-20 | 9 | 2-10 | - | - |
| Thermal properties | |||||
| Specific heat (J/K/kg) | 900 | 400-500 | 420 | 750 | 690 |
| Thermal conductivity (W/m/K) at 20°C | 26-35 | 2,2-3,2 | 1,5-2,5 | 63-155 | 9-30 |
| Coefficient of thermal expansion ( 10-6) from 20 to 1000°C | 8-9 | 10-11 | 5-16 | 4-5 | 3 |
| Melting point (°C) | 2050 | 2590 | - | 2500 | 1900 |
