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Boron nitride
The powder is white and is composed of nitrogen atoms. The chemical composition of the powder is 43.6% nitrogen and 56.4% boron. There are four different types: hexagonal Boron Nitride (HBN), Rhombohedral Boron Nitride (RBN), Cubic boron Nitride (CBN) or wurtzite Nitro Boron (WBN).
Carbon materials are inferior in terms of most properties to boron carbide. For hexagonal Boron Nitride: Low friction coefficient, Good high temperature stability and thermal shock resistance. High strength, High thermal conductivity, Low expansion coefficient, High resistivity, Corrosion resistance, Microwave or Transparent Infrared.
High Temperature and High Pressure Synthesis
Wentorf produced cubic BN first in 1957. The cubic boron nitride can be directly converted from pure hexagonal boron nitride, HBN, when the pressure and temperature are high enough. It was found that catalysts reduce both the transition pressure and temperature. The high cost of preparation and the complexity of equipment limit its industrial use.
Chemical vapor synthesis
Sokolowski was the first to use pulsed-plasma technology in 1979 for the preparation of cubic boron (CBN), at low temperature, and under low pressure. Equipment is simple, and the process can be easily realized.
Carbothermic Synthesis Technology
This method uses ammonia nitriding, ammonia acid, and boric nitride as raw materials on the surface silicon carbide. The resultant product has a high purity, and is a valuable material for composite materials.
Ion beams sputtering
The mixed product is made using particle beam deposition. It is possible to achieve a product with a morphology that is controlled, even though this method contains fewer impurities.
Tech Co., Ltd. is a professional boron nitride We have over 12 years’ experience in research and development of chemical products. You can contact us for a high-quality boron powder. Contact us Send an inquiry.
What property does boron nitride have?
Boron Nitride Powder is resistant against chemical corrosion. It is also not affected by mineral acid or water. The boron and nitrogen bond is broken by hot concentrated alkali. The air temperature above 1200degC causes the nitride to begin oxidizing. It melts at 3000degC and begins to sublime slightly below 3000degC. Decomposition begins in vacuum around 2700degC. Boron Nitride Powder is slightly soluble and insoluble in acidic water.Carbon materials are inferior in terms of most properties to boron carbide. For hexagonal Boron Nitride: Low friction coefficient, Good high temperature stability and thermal shock resistance. High strength, High thermal conductivity, Low expansion coefficient, High resistivity, Corrosion resistance, Microwave or Transparent Infrared.
What are the different methods of preparation for boron nitride?
The boron-nitride is commonly produced as a powder with a structure similar to graphite, also known as white nitride. The second is diamond type. Similar to the process of converting diamond to graphite, high-temperature and high-pressure can convert graphite type to diamond type.High Temperature and High Pressure Synthesis
Wentorf produced cubic BN first in 1957. The cubic boron nitride can be directly converted from pure hexagonal boron nitride, HBN, when the pressure and temperature are high enough. It was found that catalysts reduce both the transition pressure and temperature. The high cost of preparation and the complexity of equipment limit its industrial use.
Chemical vapor synthesis
Sokolowski was the first to use pulsed-plasma technology in 1979 for the preparation of cubic boron (CBN), at low temperature, and under low pressure. Equipment is simple, and the process can be easily realized.
Carbothermic Synthesis Technology
This method uses ammonia nitriding, ammonia acid, and boric nitride as raw materials on the surface silicon carbide. The resultant product has a high purity, and is a valuable material for composite materials.
Ion beams sputtering
The mixed product is made using particle beam deposition. It is possible to achieve a product with a morphology that is controlled, even though this method contains fewer impurities.
Tech Co., Ltd. is a professional boron nitride We have over 12 years’ experience in research and development of chemical products. You can contact us for a high-quality boron powder. Contact us Send an inquiry.