Boron Nitride Ceramic Materials, Boron Nitride Ceramic Applications

Boron nitride ceramics are made of boron nitride powder by hot pressing and sintering at high temperature, and then processed according to the size and specifications required by customers.

Boron nitride, also known as white graphite, is similar to graphite in structure, belonging to the sheet hexagonal structure, theoretical density of 2.27g/cm3, Mohs hardness of 2. Good electrical insulation, thermal conductivity, excellent heat shock resistance, chemical stability, and good moisture resistance to molten metal, slag and glass.

Boron nitride ceramics have excellent machining properties and can be machined into complex shapes according to customer requirements.

Boron nitride ceramics are resistant to acid and alkali corrosion and have strong electrical insulation, and the electrical breakdown resistance is 3-4 times that of alumina.

Boron nitride ceramics have excellent high temperature resistance, up to 1800 ℃ under vacuum and 2100 ℃ under nitrogen protection.

Boron nitride ceramics are highly resistant to thermal shock and will not crack in 1500 ℃ quench or 20 minutes in 1000 ℃furnace after being removed from air and continuously cooled for hundreds of times.

Boron nitride ceramics and many metals, ceramics, rare earth materials do not react, do not combine. Such as ferrous metals, iron, copper, stainless steel, bismuth, aluminum, tin, chromium, lead, nickel, magnesium and so on; Glass melt, sodium glass, cryolite, etc. Silicon lava: slag, fluoride, etc., can be used as containers, crucible, burning plate, etc.

Precautions for using boron nitride ceramics

1. The temperature in the air shall not exceed 1000 ℃. The surface of the boron nitride in contact with oxygen will oxidize and flake off.

2. Boron nitride absorbs water easily. Crucible should not be stored in a damp place and should not be rinsed with water, but can be wiped directly with sandpaper or wiped with alcohol.