Boron nitride crystals belong to the hexagonal system, and their structure is similar to that of graphite, and their performance also has many similarities, so they are also called “white graphite”. It has good heat resistance, thermal stability, thermal conductivity, and high-temperature dielectric strength, and is an ideal heat dissipation material and high-temperature insulation material. Boron nitride has good chemical stability and can resist the erosion of most molten metals. It also has good self-lubrication. Boron nitride products have low hardness and can be machined.
Boron nitride can be used to manufacture crucibles for melting semiconductors and high-temperature containers for metallurgy, semiconductor heat dissipation insulation parts, high-temperature bearings, thermocouple sleeves, and glass forming molds.
Performance characteristics
1. Purity>99%, no adhesion to products, no pollution to products, and long service life.
2. The maximum operating temperature is 2100 degrees, resistant to repeated impact of high and low temperatures, and resistant to carbon corrosion.
3. It can be used for sintering and melting alloys, ceramics, rare earths, and other materials. It is also used for electron beam evaporation coating, etc.
Boron nitride crucible can be used for sintering and melting metal materials, rare earth, ceramics, and other materials. It is resistant to thermal shock and corrosion and does not react or bond with metal and ceramic materials. It can replace graphite and alumina crucibles by using a temperature of 1500 degrees for 10 minutes and cooling rapidly to room temperature and repeatedly at 900 degrees.
Precautions for use
1. Boron nitride is easy to absorb moisture, and the crucible cannot be stored in a humid area or washed with water. It can be directly wiped with sandpaper or wiped with alcohol.
2. The temperature in the air cannot exceed 1000 degrees. The surface of boron nitride will oxidize and peel off when it comes into contact with oxygen.