Boron Nitride Properties

Boron nitride is a crystal composed of nitrogen atoms and also boron atoms. The crystal framework is divided into hexagonal boron nitride (HBN), closely jam-packed hexagonal boron nitride (WBN) and cubic boron nitride.

The crystal structure of hexagonal boron nitride has a similar graphite layered framework, showing a loosened, lubricating, moisture-absorbing, light as well as various other properties of white powder, so it is likewise called "white graphite". Theoretical density 2.27 g/cm3, certain gravity: 2.43, Mohr solidity = 2.
Hexagonal boron nitride has good electrical insulation, thermal conductivity, chemical security, no noticeable melting point, 3000 ℃ in 0.1 MPA nitrogen, warm resistance to 2000 ℃ in neutral decrease environment, 2800 ℃ in nitrogen and argon, poor security in oxygen environment, and temperature level listed below 1000 ℃. The development coefficient of hexagonal boron nitride amounts that of quartz, yet its thermal conductivity is 10 times that of quartz.
Hexagonal boron nitride does not dissolve cold water. When the water is boiled, it hydrolyses extremely gradually and also creates a small amount of boric acid and also ammonia, which does not respond with weak acid and solid base at room temperature level. It is a little soluble in hot acid and can only be decomposed with liquified salt hydroxide and also potassium hydroxide.

Boron Nitride Qualities
1. High heat resistance: sublimation at 3000 ℃, its toughness at 1800 ℃ is twice that at area temperature level, air-cooled at 1500 ℃ to area temperature for dozens of times, as well as does not soften at 2800 ℃ in inert gas.
2. High thermal conductivity: the hot-pressed products coincide as pure iron, and also 33W/M. K has the greatest thermal conductivity amongst ceramic materials over 530C.
3, reduced thermal growth coefficient: the growth coefficient of 2 × & times; 10-6 is second only to quartz glass, which is the tiniest in ceramics, coupled with its high thermal conductivity, so the thermal shock resistance is excellent.
4. Excellent electrical residential properties: great insulation at high temperature, 1014 Ω& Omega;- centimeters,2000 at 25 ℃ and also 103 Ω& Omega;- cm at 25 ℃. It is the most effective heat protecting material in porcelains, with break down voltage 3KV/MV, reduced dielectric loss 108HZ 2.5 × & times; 10-4, dielectric continuous 4, clear to microwave as well as infrared.
5. Excellent corrosion resistance: it does not respond with basic steels (iron, copper, light weight aluminum, lead, and so on), unusual earth metals, precious metals, semiconductor materials (germanium, silicon, potassium arsenide), glass, molten salts (crystal, fluoride, slag), inorganic acid and antacid.
6. Low friction coefficient: U is 0.16, does not increase at heat, is more immune to heat than molybdenum disulfide and graphite, oxidation environment can be consumed to 900C, vacuum cleaner can be utilized at 2000 ℃.
7. High pureness excellent B is high: its pollutant material is less than 10PPM, yet B content is more than 43.6%.
8. Machinability: its firmness is Morse 2, so it can be processed right into parts with high accuracy by general machining techniques.

What is hexagonal boron nitride made use of in?
Hexagonal boron nitride can be made use of in the manufacture of TiB2/BN composite ceramics, advanced refractories as well as superhard materials, separation rings of horizontal continual rolling steel, high temperature resistant lubricants and high temperature layers, along with basic materials for the synthesis of cubic boron nitride.

Particular uses:
1. Boron nitride is a mold and mildew release agent for steel developing and also a lubricating substance for steel cable illustration.
2. Unique electrolysis and also resistance products of boron nitride at high temperature.
3. Boron nitride appropriates for high temperature solid lubricating substances, extrusion antiwear additives, ceramic composite additives, refractories and also antioxidant ingredients, especially for molten metal Faustian celebrations, heat enhancement ingredients as well as heat immune insulation materials.
4. Boron nitride appropriates for heat-sealed desiccant of transistor as well as additive of polymer such as plastic material.
5. Boron nitride items pushed into various shapes can be made use of as high temperature, high pressure, insulation and also heat dissipation elements.
6. Boron nitride is a thermal securing material in aerospace.
7. With the engagement of catalyst, cubic boron nitride can be changed right into cubic boron nitride as difficult as ruby by heat and also high pressure treatment.
8. Boron nitride is the architectural material of atomic activator.
9. Boron nitride is suitable for the nozzles of airplane as well as rocket engines.
10. Boron nitride is an insulator of high voltage, high regularity electrical power as well as plasma arc.
11. Boron nitride is a product packaging material to avoid neutron radiation.
12. The superhard product made from boron nitride can be made right into high-speed cutting tools as well as drills for geological exploration and oil boring.
13. Boron nitride is used in metallurgy for splitting up ring of continual spreading steel, flow groove of amorphous iron, demoulding representative of constant spreading light weight aluminum (numerous optical glass stripping agents).
14. Boron nitride is an evaporator for all type of capacitor movie plating, photo tube plating, present plating.
15. Boron nitride appropriates for all type of fresh-keeping aluminized bags and so on.
16. Boron nitride is a range of laser anti-counterfeiting aluminum plating, hallmark gilding materials, all kinds of cigarette labels, beer tags, product packaging boxes, cigarette boxes.
17. Boron nitride appropriates for cosmetics. Can be used for lipstick fillers, safe and also lubricating, but additionally shiny.

Boron Nitride Cost
The cost is affected by numerous factors including the supply as well as need in the marketplace, sector trends, financial activity, market belief, as well as unforeseen occasions.
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Boron Nitride Supplier
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