Boron Nitride Properties

Boron nitride is a crystal composed of nitrogen atoms as well as boron atoms. The crystal structure is split right into hexagonal boron nitride (HBN), carefully stuffed hexagonal boron nitride (WBN) as well as cubic boron nitride.

The crystal framework of hexagonal boron nitride has a comparable graphite layered structure, showing a loose, lubricating, moisture-absorbing, light and also other residential properties of white powder, so it is likewise called "white graphite". Theoretical density 2.27 g/cm3, particular gravity: 2.43, Mohr hardness = 2.
Hexagonal boron nitride has great electrical insulation, thermal conductivity, chemical stability, no apparent melting factor, 3000 ℃ in 0.1 MPA nitrogen, warmth resistance to 2000 ℃ in neutral decrease environment, 2800 ℃ in nitrogen and also argon, inadequate stability in oxygen atmosphere, and temperature listed below 1000 ℃. The development coefficient of hexagonal boron nitride amounts that of quartz, however its thermal conductivity is ten times that of quartz.
Hexagonal boron nitride does not liquify chilly water. When the water is steamed, it hydrolyses extremely slowly and also produces a percentage of boric acid and ammonia, which does not react with weak acid as well as strong base at area temperature. It is slightly soluble in hot acid and also can just be decomposed with liquified sodium hydroxide and also potassium hydroxide.

Boron Nitride Features
1. High warm resistance: sublimation at 3000 ℃, its stamina at 1800 ℃ is twice that at room temperature level, air-cooled at 1500 ℃ to area temperature for loads of times, as well as does not soften at 2800 ℃ in inert gas.
2. High thermal conductivity: the hot-pressed items coincide as pure iron, as well as 33W/M. K has the greatest thermal conductivity amongst ceramic materials over 530C.
3, reduced thermal growth coefficient: the expansion coefficient of 2 × & times; 10-6 is 2nd just to quartz glass, which is the smallest in porcelains, coupled with its high thermal conductivity, so the thermal shock resistance is great.
4. Superb electrical properties: good insulation at heat, 1014 Ω& Omega;- centimeters,2000 at 25 ℃ as well as 103 Ω& Omega;- cm at 25 ℃. It is the very best high temperature shielding material in porcelains, with malfunction voltage 3KV/MV, reduced dielectric loss 108HZ 2.5 × & times; 10-4, dielectric constant 4, clear to microwave as well as infrared.
5. Good corrosion resistance: it does not respond with general metals (iron, copper, light weight aluminum, lead, and so on), uncommon earth steels, rare-earth elements, semiconductor materials (germanium, silicon, potassium arsenide), glass, molten salts (crystal, fluoride, slag), inorganic acid as well as antacid.
6. Reduced rubbing coefficient: U is 0.16, does not increase at high temperature, is more resistant to high temperature than molybdenum disulfide and graphite, oxidation ambience can be consumed to 900C, vacuum can be made use of at 2000 ℃.
7. High pureness excellent B is high: its impurity material is much less than 10PPM, however B web content is more than 43.6%.
8. Machinability: its hardness is Morse 2, so it can be processed into get rid of high precision by general machining approaches.

What is hexagonal boron nitride utilized in?
Hexagonal boron nitride can be used in the manufacture of TiB2/BN composite porcelains, advanced refractories as well as superhard products, splitting up rings of horizontal constant rolling steel, heat immune lubricating substances as well as heat finishes, as well as basic materials for the synthesis of cubic boron nitride.

Particular usages:
1. Boron nitride is a mold and mildew launch agent for metal developing and a lubricating substance for metal wire drawing.
2. Special electrolysis and resistance products of boron nitride at heat.
3. Boron nitride appropriates for heat strong lubricating substances, extrusion antiwear additives, ceramic composite ingredients, refractories and also antioxidant ingredients, particularly for liquified metal Faustian celebrations, warm improvement additives and also heat resistant insulation products.
4. Boron nitride is suitable for heat-sealed desiccant of transistor as well as additive of polymer such as plastic resin.
5. Boron nitride items pushed right into different shapes can be used as heat, high pressure, insulation and also heat dissipation elements.
6. Boron nitride is a thermal shielding product in aerospace.
7. With the engagement of catalyst, cubic boron nitride can be changed into cubic boron nitride as tough as ruby by heat as well as high pressure treatment.
8. Boron nitride is the architectural material of atomic activator.
9. Boron nitride is suitable for the nozzles of aircraft and also rocket engines.
10. Boron nitride is an insulator of high voltage, high frequency electricity and also plasma arc.
11. Boron nitride is a product packaging material to stop 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 drilling.
13. Boron nitride is used in metallurgy for separation ring of continuous casting steel, circulation groove of amorphous iron, demoulding representative of constant casting aluminum (different optical glass stripping agents).
14. Boron nitride is an evaporator for all kinds of capacitor movie plating, picture tube plating, display plating.
15. Boron nitride is suitable for all sort of fresh-keeping aluminized bags and more.
16. Boron nitride is a range of laser anti-counterfeiting light weight aluminum plating, hallmark gilding materials, all sort of cigarette labels, beer labels, product packaging boxes, cigarette boxes.
17. Boron nitride appropriates for cosmetics. Can be used for lipstick fillers, non-toxic as well as lubricating, however additionally glossy.

Boron Nitride Rate
The price is affected by several factors consisting of the supply and also demand on the market, industry fads, financial task, market view, and also unforeseen occasions.
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Boron Nitride Vendor
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