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How heat resistant is boron nitride

Views : 243
Author : Liu Zihang
Update time : 2022-12-07 17:44:24
What is boron nitride?
Boron nitride is usually black, brown or dark red crystals with sphalerite structure and good thermal conductivity. Its hardness is second only to diamond, a superhard material commonly used as tool materials and abrasives. Boron nitride has chemical resistance and no erosion by inorganic acid and water. The boron nitrogen bond is broken in hot, concentrated alkali. Oxidation starts in the air at 1200 . Decomposition begins at about 2700 in a vacuum. It is slightly soluble in hot acid and insoluble in cold water. The relative density is 2.29. The compressive strength is 170 mph. The maximum service temperature is 900 in the oxidation atmosphere and 2800 in the non-active reduction atmosphere, but the lubrication performance is poor at room temperature. Most properties of boron nitride are better than carbon materials. For hexagonal boron nitride: the friction coefficient is shallow Good high-temperature stability, good thermal shock resistance, high strength, high thermal conductivity, low expansion coefficient, high resistivity, corrosion resistance, microwave or infrared transmission.

What is the role of boron nitride?
Hexagonal boron nitride can make TiB2/BN composite ceramics, advanced refractories and superhard material; separation rings for continuous horizontal rolling, high-temperature resistant lubricants and high-temperature coatings. It is also a raw material for synthesizing cubic boron nitride. In addition, it is also a very excellent high-temperature lubricant, which can be used as a component of self-lubricating bearings. Boron nitride has many physical properties similar to graphite, called white graphite. It is similar to mica, talcum powder, and silicate; Fatty acids are collectively referred to as white solid lubricants. As a lubricant, boron nitride can be dispersed in heat-resistant lubricating grease, water or solvent; It is sprayed on the friction surface to form a dry film after the solvent volatilizes and then filled in the resin, ceramic, and metal surface layers as a high-temperature resistant self-lubricating composite material. It is used in aerospace engineering, or the boron nitride powder can be directly coated on the guide rail surface. The boron nitride suspension oil is white or yellow. Therefore, it does not pollute fibre products in textile machinery and can be widely used in the lubrication of synthetic fibre textile machinery.  
Is Boron nitride harmful to human body?
Boron nitride is not toxic, but boron nitride powder is a cloud of dust harmful to human health. Boron nitride powder is physically inert and will be detrimental to health when swallowed, inhaled, and contacted with the skin and eyes. Consuming or inhaling will cause skin, respiratory system, and kidney circulation disorders.
Price of boron nitride
Boron nitride particle size and purity will affect the product's price, and the purchase volume can also affect the cost of boron nitride. A large amount of large amount will be lower. The price of boron nitride can be found on our company's official website.
Boron nitride supplier
Luoyang Tongrun Nano Technology Co. Ltd.  (TRUNNANO) Luoyang City, Henan Province, China, is a reliable and high-quality global chemical material supplier and manufacturer. It has more than 12 years of experience providing ultra-high quality chemicals and nanotechnology materials, including boride powder, nitride powder, graphite powder, sulfide powder, and 3D printing powder. If you are looking for high-quality and cost-effective hexagonal boron nitride powder, you are welcome to contact us or inquire any time.
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