yixing haiyu refractory co.,ltd
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Insulating ceramic products abrasion proof high temperature corrosion resistance electric fittings
product name:Alumina insulating ceramics
Introduction of alumina ceramics:
Insulating ceramics refer to the ceramic materials used as installation, fixation, support, protection, insulation, isolation and connection of various radio components and devices in electronic equipment. Insulating ceramics require high volume resistivity, low dielectric coefficient, low loss factor, high dielectric strength, corrosion resistance and good mechanical properties.
Insulating ceramics are widely used in circuit substrates, packaging, high-frequency insulating ceramics and other industries. The main devices include insulators, spark plugs, resistor matrix materials and integrated circuit substrates.
products index:
| Ceramic characteristic table | |||
| name | 99% AL2O3 | 95% AL2O3 | |
| physical propertyessential component | essential component | AL2O3≥99% | AL2O3≥95% |
| Density(g/cm3) | 3.85 | 3.6 | |
| water absorption% | 0 | 0 | |
| sintering temperature | 1690 | 1670 | |
| material characters | Hardness(HV) | 1700 | 1600 |
| break off strength | >6500 | >2900 | |
| compressive strength | 30000 | 25000 | |
| thermal response | maximum service tempera- ture | 1500 | 1400 |
| thermal expansion coefficient | 8 | 7.8 | |
| 10-6/℃ | |||
| 0-1000℃ | |||
| Heat shock resistance T(℃) | 200 | 220 | |
| thermal conductivity W/m.k | 31 | 22 | |
| electrical specification | volume resistivity Ω.cm | >1012 | >1012 |
| Insulation destructive power KT/m | 18 | 16 | |
| dielectric constant 1MHZ(E) | 9.2-10.5 | 9.0-10 | |
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