Boron Nitride Properties

Boron nitride is a crystal composed of nitrogen atoms and also boron atoms. The crystal structure is separated right into hexagonal boron nitride (HBN), carefully packed hexagonal boron nitride (WBN) and cubic boron nitride.

The crystal framework of hexagonal boron nitride has a comparable graphite layered structure, revealing a loosened, lubricating, moisture-absorbing, light and various other properties of white powder, so it is also called "white graphite". Theoretical density 2.27 g/cm3, details gravity: 2.43, Mohr firmness = 2.
Hexagonal boron nitride has excellent electric insulation, thermal conductivity, chemical security, no obvious melting point, 3000 ℃ in 0.1 MPA nitrogen, warm resistance to 2000 ℃ in neutral decrease environment, 2800 ℃ in nitrogen and also argon, bad security in oxygen atmosphere, as well as temperature listed below 1000 ℃. The development coefficient of hexagonal boron nitride amounts that of quartz, but its thermal conductivity is 10 times that of quartz.
Hexagonal boron nitride does not liquify cold water. When the water is boiled, it hydrolyses extremely slowly and creates a percentage of boric acid and also ammonia, which does not respond with weak acid and solid base at room temperature. It is somewhat soluble in warm acid and also can only be broken down with molten sodium hydroxide and potassium hydroxide.

Boron Nitride Qualities
1. High warm resistance: sublimation at 3000 ℃, its toughness at 1800 ℃ is two times that at space temperature level, air-cooled at 1500 ℃ to room temperature for dozens of times, and also does not soften at 2800 ℃ in inert gas.
2. High thermal conductivity: the hot-pressed items coincide as pure iron, and also 33W/M. K has the highest thermal conductivity amongst ceramic materials above 530C.
3, reduced thermal development coefficient: the growth coefficient of 2 × & times; 10-6 is 2nd just to quartz glass, which is the smallest in ceramics, combined with its high thermal conductivity, so the thermal shock resistance is very good.
4. Superb electric buildings: excellent insulation at high temperature, 1014 Ω& Omega;- centimeters,2000 at 25 ℃ as well as 103 Ω& Omega;- centimeters at 25 ℃. It is the best heat protecting product in ceramics, with failure voltage 3KV/MV, reduced dielectric loss 108HZ 2.5 × & times; 10-4, dielectric continuous 4, clear to microwave as well as infrared.
5. Excellent deterioration resistance: it does not react with basic metals (iron, copper, aluminum, lead, and so on), unusual earth metals, precious metals, semiconductor products (germanium, silicon, potassium arsenide), glass, liquified salts (crystal, fluoride, slag), not natural acid and antacid.
6. Low friction coefficient: U is 0.16, does not boost at high temperature, is much more resistant to high temperature than molybdenum disulfide and graphite, oxidation ambience can be used up to 900C, vacuum can be utilized at 2000 ℃.
7. High pureness great B is high: its pollutant content is less than 10PPM, however B web content is greater than 43.6%.
8. Machinability: its hardness is Morse 2, so it can be processed right into get rid of high precision by basic machining methods.

What is hexagonal boron nitride utilized in?
Hexagonal boron nitride can be utilized in the manufacture of TiB2/BN composite ceramics, progressed refractories and also superhard materials, separation rings of straight constant rolling steel, high temperature resistant lubricating substances as well as heat layers, along with raw materials for the synthesis of cubic boron nitride.

Specific uses:
1. Boron nitride is a mold launch representative for metal creating and a lube for metal wire illustration.
2. Unique electrolysis and also resistance products of boron nitride at heat.
3. Boron nitride appropriates for heat solid lubricating substances, extrusion antiwear additives, ceramic composite additives, refractories and antioxidant ingredients, specifically for liquified steel Faustian events, heat enhancement ingredients as well as high temperature immune insulation products.
4. Boron nitride is suitable for heat-sealed desiccant of transistor and also additive of polymer such as plastic material.
5. Boron nitride products pressed into different forms can be used as high temperature, high stress, insulation and also heat dissipation components.
6. Boron nitride is a thermal protecting product in aerospace.
7. With the involvement of catalyst, cubic boron nitride can be transformed into cubic boron nitride as hard as ruby by high temperature and high stress treatment.
8. Boron nitride is the architectural material of atomic activator.
9. Boron nitride is suitable for the nozzles of airplane and also rocket engines.
10. Boron nitride is an insulator of high voltage, high frequency electrical power and plasma arc.
11. Boron nitride is a product packaging material to stop neutron radiation.
12. The superhard material made from boron nitride can be made into high-speed cutting tools as well as drills for geological exploration as well as oil exploration.
13. Boron nitride is utilized in metallurgy for splitting up ring of constant casting steel, circulation groove of amorphous iron, demoulding representative of continual spreading aluminum (numerous optical glass stripping agents).
14. Boron nitride is an evaporator for all kinds of capacitor movie plating, image tube plating, present plating.
15. Boron nitride is suitable for all type of fresh-keeping aluminized bags and more.
16. Boron nitride is a variety of laser anti-counterfeiting aluminum plating, hallmark gilding materials, all sort of cigarette labels, beer labels, packaging boxes, cigarette boxes.
17. Boron nitride appropriates for cosmetics. Can be used for lipstick fillers, safe and also lubricating, however likewise shiny.

Boron Nitride Price
The price is influenced by numerous aspects including the supply and also need in the marketplace, market fads, economic task, market sentiment, and also unexpected occasions.
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Boron Nitride Vendor
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