Special Size Also Available.
Also Available are Alumina Boat & Other Alumina labware.
Why choose alumina products?
High purity alumina products can withstand very high temperatures under reducing, inert, or high vacuum conditions. They remain good chemical resistance under high temperatures and have excellent wear and abrasion resistance.
What's the highest temperature that 99.9% of alumina products can withstand?
Alumina products can withstand up to 1750°C (3182°F).
What should I pay attention to when I use alumina products?
1. Alumina products are fragile. Please handle them carefully and avoid collision during unpacking, transportation, handling, and cleaning.
2. Check whether any micro-cracks exist before using alumina products. Products with micro-cracks should not be used.
3. Alumina products should be completely dry before use. If they get wet, let the crucible or tube dry naturally before using them. If dry crucibles by placing them in a dryer or oven, make sure that the dry process goes slowly.
4. Do not load too many materials in alumina crucibles, which can increase the possibility of uneven heating.
5. Alumina crucibles are sensitive to thermal shock. Try to warm up the furnace chamber slowly. A heating rate of 150°C/hour is recommended for the first 1-1.5 hours so that the crucibles can be evenly heated to reduce the impact of thermal shock. It usually takes about 3 hours to increase to a high temperature.
6. Lower the temperature as gradually as possible. The cooling down rate is often half of the heating rate. If possible, arrange for consecutive heating of the furnace to maintain a hot crucible. If taking the crucibles out of the furnace to room temperature to pour the melted material, try to control the process as short as possible.
7. Avoid contact with heated alumina products on a cold surface. Use insulation materials as support of alumina crucibles.
Also available in all customized sizes, in cylindrical, and conical shapes according to requirement.
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