Boron Nitride Crucible

1. Ferrous metals: iron, copper, aluminum, nickel, magnesium, bismuth, zinc, etc., alloy Fe Co Ni Si co Zr Nb;
2. It does not react with water and acid at room temperature, and slowly hydrolyzes with water to generate boric acid and ammonia;
3. Rare earth, nitride.

1. Antimony oxide, chromium oxide, molybdenum oxide, arsenic trioxide, titanium carbide, etc.
2. The melting of high lead glass glaze in 800-950°C air has erosion on BN, but there is no reaction under the protection of nitrogen or inert gas.
3. Boron phosphate corrodes boron nitride in 1400°C nitrogen, and reacts with hot concentration or molten alkali and hot chlorine gas.

1. The service temperature in the air shall not exceed 900°C, or the contact surface between boron nitride and oxygen will be oxidized and peeled off.
2. Boron nitride is easy to absorb moisture. The crucible cannot be stored in wet areas or washed with water. It can be directly wiped with sandpaper or alcohol.

Boron nitride crucible is mainly used for ceramic melting, silicate melting, metal smelting, crystal growth, etc.

1. The chemical property is stable. It does not react with the melted metal, thus improves the purity.
2. The oxidation resistance is better, 400-500°C higher than that of graphite.
3. Long service life, not easy to crack. Good corrosion resistance and wear resistance.
4. It is not easy to fall off the powder, and the pollution is small. The film has good properties.
5. Can be processed into any shape and size needed;
6. Good thermal conductivity, excellent thermal shock resistance, no cracking during sudden cooling and heat shock;
7. Excellent electrical insulation performance. Even under high temperature conditions, it still has good insulation.

1. High temperature resistance, long-term use temperature 1800°C under vacuum, long-term use 2100°C under atmosphere protection. Alumina shall not exceed 1700 degrees.
2. It has strong thermal shock resistance and does not crack when it is cold and hot. The boron nitride ceramics are taken out from the furnace at 1000°C and quenched by blowing. They will not crack even if they are repeatedly cooled for 100 times.
3. It is resistant to acid and alkali corrosion, strong electrical insulation, and 3-4 times as strong as alumina.
4. Boron nitride ceramics do not react with many metals, ceramics, rare earth and other materials. Such as ferrous metal, iron, copper, stainless steel, bismuth, aluminum, tin, chromium, lead, nickel, magnesium, etc., glass melt, sodium glass, cryolite, etc., silicon lava: slag, fluoride, etc. It can be used as a container, crucible, burning plate, etc.

1. The strength, hardness and wear resistance of boron nitride ceramics are lower than that of alumina, so it is not suitable for use in vibration friction environment.
2. Boron nitride ceramics cannot be used in air at a temperature higher than 900°C, or it will be oxidized. Boron nitride can only be used at a temperature of 2200°C under the protection of vacuum or atmosphere.

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1. Quantity
2. Dimensions or drawings
3. With or without lids

Standard Packing: Sealed bags in Carton Box. Special package is available on request.