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Product Details:
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| Features: | 99.7% Alumina Content | Material: | Alumina |
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| Size: | Customized | Color: | Ivory |
| Highlight: | High Purity Alumina Crucibles,Alumina Crucibles For Metals Melting,Alumina Crucibles For Ceramic Powders |
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High Purity Alumina Crucibles for metals melting, ceramic powders heat treatment, annealing, fusion processes
Alumina (Al2O3) is one of the most important ceramic oxides which is widely used for structural, electronics, medical and electrical fields. Alumina has wide application as engineering technical ceramic due to its high hardness value, high abrasion (wear) resistance and low cost. It has high melting point (2054 °C), and boiling point (2977 °C) low thermal expansion and high compressive strength which provides good thermal shock resistance. Alumina is one the best electrical insulations at high temperatures making it excellent choice as a thermodielectric refractory and is transparent to microwave radio frequencies. It’s fairly high chemical stability, make Alumina a good material to withstand chemical corrosion. ZG is producing a broad range of analytical grade, recrystallized, dense Alumina crucibles in various sizes and forms. Custom solutions available upon request.
ZG recrystallized Alumina t-ceramics Crucibles Key Features:
Related Data
| Main component | 99%Al2O3 | S-SiC | ZrO2 | Si3N4 | ||
| Physical Property |
Density | g/cm3 | 3.9 | 3.1 | 6 | 3.2 |
| Water Absorption | % | 0 | 0.1 | 0 | 0.1 | |
| Sinter Temperature | °C | 1700 | 2200 | 1500 | 1800 | |
| Mechanical Property |
Rockwell Hardness | HV | 1700 | 2200 | 1300 | 1400 |
| Bend Strength | kgf/mm2 | 3500 | 4000 | 9000 | 7000 | |
| Compression Intensity | Kgf/mm2 | 30000 | 20000 | 20000 | 23000 | |
| Thermal Property |
Maximum working temperature |
°C | 1500 | 1600 | 1300 | 1400 |
| thermal expansion coefficient 0-1000°C |
/°C | 8.0*10-6 | 4.1*10-6(0-500°C) | 9.5*10-6 | 2.0*10-6(0-500°C) | |
| 5.2*10-6(500-1000°C) | 4.0*10-6(500-1000°C) | |||||
| Thermal Shock resistance | T(°C) | 200 | 250 | 300 | 400-500 | |
| Thermal Conductivity | W/m.k(25°C | 31 | 100 | 3 | 25 | |
| 300°C) | 16 | 100 | 3 | 25 | ||
| Electrical Property |
Resisting rate of Volume | ◎.cm | ||||
| 20°C | >1012 | 106-108 | >1010 | >1011 | ||
| 100°C | 1012-1013 | – | – | >1011 | ||
| 300°C | >1012 | – | – | >1011 | ||
| Insulation Breakdown Intensity |
KV/mm | 18 | semiconductor | 9 | 17.7 | |
| Dielectric Constant (1 MHz) | (E) | 10 | – | 29 | 7 | |
| Dielectric Dissipation | (tg o) | 0.4*10-3 | – | – | – | |
Applications.
Analytical applications, metals melting, ceramic powders heat treatment, material acid treatment even at elevated temperature, crucibles for annealing, crucibles for fusion processes, crucibles for crystal growing, crucibles for extremely corrosive environments, like plasma etching
Contact Person: Daniel
Tel: 18003718225
Fax: 86-0371-6572-0196
