Boron Nitride

Specification

Product tsananguro

Zita rechiChinese: hexagonal boron nitride, boron nitride

Zita reChirungu: Boron Nitride

Molecular formula: BN

Molecular uremu: 24.18 (maererano ne1979 international atomic weight)

Quality mwero: 98%, 99%

Enterprise mwero: Q/YLH001-2006

HS kodhi: 2850001200

CAS nhamba: 10043-11-5

Kudzikira tembiricha boron nitride inogadzirwa nekusanganisa borax neammonium chloride muchoto chekuita pakudziya kwe1000-1200°C. High-temperature boron nitride inogadzirwa nekusanganisa boric acid uye melamine kuburikidza nepamusoro-tembiricha calcination reaction pa1700.

Product Features

Boron nitride ikristaro inoumbwa nemaatomu enitrogen nemaatomu eboron. Chimiro chekristaro chakakamurwa kuita: hexagonal boron nitride (HBN), yakavharika hexagonal boron nitride (WBN) uye cubic boron nitride, pakati peiyo hexagonal boron nitride makristasi Chimiro chine yakafanana graphite layered chimiro, inoratidza chena hupfu hwakasununguka. , lubricated, nyore kutora unyoro, uye chiedza muhuremu, saka inonziwo "white graphite".

Theoretical density ndeye 2.27g/cm3, iyo chaiyo giravhiti i2.43, uye kuoma kweMohs i2.

Hexagonal boron nitride ine magetsi ekudzivirira zvakanaka, kupisa kwemhepo, kugadzikana kwemakemikari, pasina nzvimbo inonyunguduka iri pachena, kupisa kwekushisa kusvika ku3000 ℃ mu 0.1MPA nitrogen, kupikisa kupisa kusvika ku2000 ℃ mumamiriro ekuderedza kwaakarerekera, munitrogen uye Tembiricha yekushanda muargon inogona kusvika. 2800 ℃, uye kugadzikana mumhepo yeokisijeni hakuna kunaka, uye tembiricha yekushanda iri pasi pe1000 ℃.

Iyo yekuwedzera coefficient yehexagonal boron nitride yakaenzana neiyo yequartz, asi iyo inodziya conductivity yakapetwa kagumi iyo yequartz. Iinewo lubricity yakanaka pakupisa kwepamusoro. Iyo yakanakisa-yepamusoro-tembiricha yakasimba lubricant ine yakasimba neutron absorption kugona, yakagadzikana makemikari zvimiro, uye makemikari inertness kune angangoita ese masimbi akanyungudutswa.

Hexagonal boron nitride hainyunguriki mumvura inotonhora. Kana mvura ikafashaidzwa, inoita hydrolyzes zvishoma nezvishoma uye inogadzira zvishoma boric acid uye ammonia. Izvo hazviiti neasina simba acids uye mabhesi akasimba pakupisa kwekamuri. Inonyungudika zvishoma mune inopisa acids. Shandisa yakanyungudutswa sodium hydroxide, potassium hydroxide processing kuti iparadze. Iyo ine yakakura anti-corrosion kugona kune akasiyana inorganic acids, alkalis, munyu mhinduro uye organic zvinonyungudutsa.

Technical indicators

Boron Nitride Parameters

1. Kupisa kwakanyanya kupikisa: sublimation pa 3000 ℃, simba rayo kaviri pane tembiricha yekamuri pa 2 ℃, uye haizoputsika kana yatonhodzwa kusvika kukamuri tembiricha kakawanda pa 1800 ℃, uye haizopfavi pa 1500 ℃ mukati. inert gasi.

2. High thermal conductivity: Iyo inopisa-yakatsikirirwa chigadzirwa ndeye 33W / MK Kufanana nesimbi yakachena, iyo inobata thermally conductive zvinhu mu ceramic zvinhu pamusoro pe530 °C.

3. Low thermal kuwedzera coefficient: Kuwedzera kwekuwedzera kwe2 × 10-6 ndeyechipiri chete kune quartz girazi, iyo idiki pakati pemakeramiki. Mukuwedzera, ine high thermal conductivity, saka ine yakanaka thermal shock resistance.

4. Yakanakisa magetsi emagetsi: yakanaka-yepamusoro-tembiricha insulation, 1014Ω-cm pa25 ° C, uye 103Ω-cm pa2000 ° C. Icho chiri nani chepamusoro-tembiricha insulating zvinhu muceramic, ine voltage yekuputsika ye3KV/MV uye yakaderera dielectric kurasikirwa kwe108HZ. Kana iri 2.5 × 10-4, dielectric inogara iri 4, uye inogona kutumira microwave uye infrared mwaranzi.

5. Good corrosion resistance: ine simbi dzakawanda (simbi, mhangura, aruminiyamu, mutobvu, nezvimwewo), zvisingawanzo simbi pasi, simbi dzinokosha, semiconductor zvinhu (germanium, silicon, potassium arsenide), girazi, munyu wakanyungudutswa (crystal stone, fluoride , slag), inorganic acids, alkalis haaite.

6. Low coefficient of friction: U ndeye 0.16, iyo isingawedzeri pakupisa kwepamusoro. Inonyanya kupikisa kupisa kwakanyanya kudarika molybdenum disulfide uye graphite. Iyo oxidizing mhepo inogona kushandiswa kusvika 900 ° C, uye vacuum inogona kushandiswa kusvika 2000 ° C.

7. Kuchena kwepamusoro: zvinyorwa zvayo zvisina kuchena zvishoma kudarika 10PPM, uye B zvinyorwa zvayo zvakakura kudarika 43.6%.

8. Machinability: Kuoma kwayo ndiko Mohs 2, saka inogona kugadziriswa muzvikamu nehupamhi hwepamusoro nenzira dzakawanda dzekugadzira.

Chikamu chekushandiswa

1. Boron nitride chinhu chisina chepfu, tembiricha inodzivirira, corrosion resistance, high thermal conductivity, high insulation uye yakanakisa lubricating properties.

2. Izvo zvose insulator yemagetsi uye thermal conductor, electrolysis yakakosha uye zvinhu zvinopikisa pasi pemamiriro ekupisa kwepamusoro, insulators ye-high-voltage high-frequency magetsi uye plasma arcs.

3. Inogona kushandiswa seyakasimba-phase doping material ye semiconductors, uye girisi inopikisa oxidation kana mvura.

4. High-temperature lubricant uye mold release agent yemhando, boron nitride powder inogonawo kushandiswa sechinhu chinosunungura chegirasi mabhesi, uye mold release agent yegirazi nesimbi yekuumba.

5. Iyo superhard material yakagadziridzwa neboron nitride inogona kugadzirwa mu-high-speed cutting tool uye drill bits yekuongorora geological uye kuchera mafuta.

6. Zvigadzirwa zvemaatomu reactors, mhino dzendege neroketi injini, zvekurongedza zvekudzivirira neutron mwaranzi, uye kupisa kunodzivirira kupisa mumhepo.

7. Haina chepfu uye haina kukuvadza uye ine lubricity, iyo inogona kushandiswa sekuzadza kwezvizoro.

8. Nekubatanidzwa kwecatalyst, inogona kuchinjwa kuva cubic boron nitride yakaoma sedhaimondi mushure mekupisa kwepamusoro uye kurapwa kwakanyanya.

9. Ita mabhoti akasiyana-siyana evaporation e capacitor film aluminium plating, picture tube aluminium plating, kuratidza aluminium plating, nezvimwewo.

10. Heat-sealing desiccant ye transistors uye additives yemapolymers akadai seplastiki resins.

11. Yakasiyana-siyana laser anti-counterfeiting aluminium plating, trademark bronzing zvinhu, mavara akasiyana-siyana efodya, zvinyorwa zvedoro, mabhokisi ekurongedza, mabhokisi ekurongedza fodya, nezvimwe.