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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), very closely stuffed hexagonal boron nitride (WBN) as well as cubic boron nitride.

The crystal structure of hexagonal boron nitride has a similar graphite layered structure, showing a loose, lubricating, moisture-absorbing, light and other homes of white powder, so it is additionally called "white graphite". Theoretical thickness 2.27 g/cm3, details gravity: 2.43, Mohr solidity = 2.
Hexagonal boron nitride has good electric insulation, thermal conductivity, chemical stability, no obvious melting point, 3000 ℃ in 0.1 MPA nitrogen, warmth resistance to 2000 ℃ in neutral decrease ambience, 2800 ℃ in nitrogen and argon, inadequate security in oxygen ambience, and also temperature below 1000 ℃. The growth coefficient of hexagonal boron nitride is equivalent to that of quartz, but its thermal conductivity is 10 times that of quartz.
Hexagonal boron nitride does not dissolve chilly water. When the water is steamed, it hydrolyses really slowly as well as produces a percentage of boric acid and ammonia, which does not respond with weak acid and strong base at room temperature level. It is a little soluble in warm acid and can just be broken down with liquified sodium hydroxide and potassium hydroxide.

Boron Nitride Qualities
1. High warmth resistance: sublimation at 3000 ℃, its strength at 1800 ℃ is two times that at space temperature level, air-cooled at 1500 ℃ to space temperature level for loads of times, as well as does not soften at 2800 ℃ in inert gas.
2. High thermal conductivity: the hot-pressed items are the same as pure iron, as well as 33W/M. K has the greatest thermal conductivity amongst ceramic products above 530C.
3, reduced thermal growth coefficient: the growth coefficient of 2 × & times; 10-6 is 2nd just to quartz glass, which is the smallest in porcelains, paired with its high thermal conductivity, so the thermal shock resistance is great.
4. Exceptional electric homes: good insulation at high temperature, 1014 Ω& Omega;- cm,2000 at 25 ℃ and 103 Ω& Omega;- centimeters at 25 ℃. It is the most effective heat insulating material in ceramics, with malfunction voltage 3KV/MV, reduced dielectric loss 108HZ 2.5 × & times; 10-4, dielectric consistent 4, transparent to microwave and also infrared.
5. Great deterioration resistance: it does not react with basic metals (iron, copper, aluminum, lead, and so on), unusual planet metals, rare-earth elements, semiconductor materials (germanium, silicon, potassium arsenide), glass, molten salts (crystal, fluoride, slag), not natural acid and also antacid.
6. Low friction coefficient: U is 0.16, does not raise at high temperature, is extra immune to high temperature than molybdenum disulfide and graphite, oxidation atmosphere can be consumed to 900C, vacuum can be made use of at 2000 ℃.
7. High purity good B is high: its pollutant web content is much less than 10PPM, yet B content is greater than 43.6%.
8. Machinability: its hardness is Morse 2, so it can be refined right into parts with high precision by basic machining methods.

What is hexagonal boron nitride utilized in?
Hexagonal boron nitride can be used in the manufacture of TiB2/BN composite ceramics, advanced refractories and superhard materials, splitting up rings of straight constant rolling steel, high temperature immune lubes as well as heat finishings, along with resources for the synthesis of cubic boron nitride.

Specific uses:
1. Boron nitride is a mold and mildew release representative for steel creating and also a lubricant for steel cable drawing.
2. Special electrolysis as well as resistance materials of boron nitride at heat.
3. Boron nitride is suitable for high temperature strong lubes, extrusion antiwear additives, ceramic composite additives, refractories and antioxidant ingredients, especially for liquified steel Faustian events, heat enhancement ingredients and also heat immune insulation products.
4. Boron nitride is suitable for heat-sealed desiccant of transistor as well as additive of polymer such as plastic material.
5. Boron nitride items pressed right into numerous shapes can be used as high temperature, high stress, insulation and warm dissipation components.
6. Boron nitride is a thermal protecting product in aerospace.
7. With the participation of catalyst, cubic boron nitride can be transformed into cubic boron nitride as difficult as diamond by high temperature and high pressure therapy.
8. Boron nitride is the architectural product of atomic activator.
9. Boron nitride appropriates for the nozzles of aircraft and also rocket engines.
10. Boron nitride is an insulator of high voltage, high frequency electrical energy and also plasma arc.
11. Boron nitride is a packaging product to avoid neutron radiation.
12. The superhard product made from boron nitride can be made into high-speed cutting tools and drills for geological exploration as well as oil drilling.
13. Boron nitride is used in metallurgy for splitting up ring of continual spreading steel, flow groove of amorphous iron, demoulding representative of continual casting light weight aluminum (different optical glass stripping representatives).
14. Boron nitride is an evaporator for all kinds of capacitor film plating, image tube plating, show plating.
15. Boron nitride is suitable for all sort of fresh-keeping aluminized bags and so on.
16. Boron nitride is a selection of laser anti-counterfeiting aluminum plating, hallmark gilding products, all type of cigarette labels, beer tags, product packaging boxes, cigarette boxes.
17. Boron nitride appropriates for cosmetics. Can be used for lipstick fillers, safe as well as lubricating, yet likewise glossy.

Boron Nitride Cost
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Boron Nitride Vendor
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