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[China]
Trade Verify
Address: Chuanbu Village,Ceramics Industrial Park,Dingshu Town,Yixingcity,China
Contact name:Selena
yixing haiyu refractory co.,ltd |
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Verified Suppliers
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alumina ceramics electronic insulation mechanical wear-resistant parts industrial accessories
product name:alumina ceramics
Introduction of alumina ceramics:
Alumina ceramic is a kind of precision ceramic material, which is a
kind of ceramic material with a-Al2O3 oxygen as the main crystal
phase. It is widely used in all walks of life. It mainly includes
electronics, textile, chemical industry, construction and aerospace
and other fields. It is the most widely used and high-yield new
ceramic material in ceramic products.
Uses of alumina ceramics
Alumina ceramics are divided into two categories, one is high
alumina ceramics, and the other is corundum ceramics. High-alumina
ceramics are ceramics with Al2O3 and SiO2 as the main components,
so that the indicators of high-alumina ceramics are improved. Due
to the different main crystal phases in the ceramic body, it is
divided into corundum mullite ceramics and mullite ceramics.
Mechanical aspects : cutting tools, ball valves, grinding wheels,
ceramic nails, bearings, industrial valves ( cock valves, gate
valves, globe valves, ball valves, etc. )
Electronics and electricity : ceramic base plate, substrate,
ceramic membrane, transparent ceramics, ceramic electrical
insulation porcelain, electronic materials, magnetic materials.
Medical aspects : artificial bones, artificial joints, artificial
teeth, etc.
Alumina ceramic characteristics : high mechanical strength, high
insulation resistance, high hardness, wear resistance, corrosion
resistance, high temperature resistance, low thermal expansion,
high thermal conductivity, high mechanical strength and a series of
excellent performance. It can resist the erosion of gold and slag,
and can also be used as an insulator in the electronics industry
and other industries.
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 | |
Company workshop equipment:
