Boron nitride

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mankhwala kufotokoza

Dzina lachi China: hexagonal boron nitride, boron nitride

Dzina la Chingerezi: Boron Nitride

Fomula ya mamolekyu: BN

Kulemera kwa molekyulu: 24.18 (malinga ndi kulemera kwa atomiki yapadziko lonse mu 1979)

Quality muyezo: 98%, 99%

Muyezo wabizinesi: Q/YLH001-2006

HS kodi: 2850001200

Nambala ya CAS: 10043-11-5

Kutentha kochepa kwa boron nitride kumapangidwa mwa kusakaniza borax ndi ammonium chloride mu ng'anjo yomwe imachitira kutentha kwa 1000-1200 ° C. Kutentha kwambiri kwa boron nitride kumapangidwa mwa kusakaniza boric acid ndi melamine kupyolera mu kutentha kwakukulu kwa calcination reaction pa 1700.

Zambiri Zamalonda

Boron nitride ndi kristalo wopangidwa ndi maatomu a nayitrogeni ndi ma atomu a boron. Kapangidwe ka kristalo kumagawidwa kukhala: hexagonal boron nitride (HBN), yodzaza kwambiri ndi hexagonal boron nitride (WBN) ndi kiyubiki boron nitride, pomwe makristalo a hexagonal boron nitride Mapangidwewo ali ndi mawonekedwe ofanana ndi graphite, akuwonetsa ufa woyera womwe ndi wotayirira. , mafuta, osavuta kuyamwa chinyezi, ndi kuwala kwa kulemera kwake, kotero amatchedwanso "white graphite".

Theoretical density ndi 2.27g/cm3, mphamvu yokoka yeniyeni ndi 2.43, ndipo kuuma kwa Mohs ndi 2.

Hexagonal boron nitride ili ndi kutchinjiriza kwamagetsi, kukhazikika kwamafuta, kukhazikika kwamankhwala, kusungunuka koonekera bwino, kukana kutentha mpaka 3000 ℃ mu nayitrogeni 0.1MPA, kukana kutentha mpaka 2000 ℃ mumlengalenga wochepetsera ndale, mu nayitrogeni ndi Kutentha kwa ntchito mu argon kumatha kufika. 2800 ℃, ndi bata mu mpweya mpweya ndi osauka, ndi kutentha ntchito ndi pansipa 1000 ℃.

Kukula kokwanira kwa hexagonal boron nitride ndikofanana ndi quartz, koma matenthedwe amatenthedwe kuwirikiza kakhumi kuposa quartz. Imakhalanso ndi lubricity yabwino pa kutentha kwakukulu. Ndi mafuta olimba omwe amatenthedwa kwambiri komanso amatha kuyamwa ndi neutroni, mawonekedwe okhazikika amankhwala, komanso kusakhazikika kwamankhwala pafupifupi zitsulo zonse zosungunuka.

Hexagonal boron nitride sisungunuka m'madzi ozizira. Madzi akawiritsidwa, amasungunuka pang'onopang'ono ndipo amatulutsa boric acid ndi ammonia pang'ono. Sichichita ndi ma asidi ofooka ndi maziko amphamvu kutentha kutentha. Amasungunuka pang'ono mu zidulo zotentha. Gwiritsani ntchito chitsulo chosungunuka cha sodium hydroxide, potaziyamu hydroxide processing kuti kuwola. Lili ndi mphamvu yotsutsa- dzimbiri ku mitundu yosiyanasiyana ya ma inorganic acid, alkalis, salt solutions ndi organic solvents.

Zolemba zamakono

Boron Nitride Parameters

1. Kutentha kwakukulu kwa kutentha: kutsika kwapansi pa 3000 ℃, mphamvu yake ndi 2 nthawi ya kutentha kwa chipinda pa 1800 ℃, ndipo sikudzasweka pamene utakhazikika kutentha kwa firiji kwa maulendo angapo pa 1500 ℃, ndipo sikudzafewetsa pa 2800 ℃ mu gasi wopanda.

2. Kutentha kwapamwamba: Chopangidwa ndi kutentha ndi 33W / MK Monga chitsulo choyera, ndi chinthu chopangira thermally mu zipangizo za ceramic pamwamba pa 530 °C.

3. Coefficient yochepetsera kutentha kwapakati: Kukula kwa 2 × 10-6 ndi yachiwiri kwa galasi la quartz, lomwe ndi laling'ono kwambiri pakati pa zoumba. Kuphatikiza apo, imakhala ndi matenthedwe apamwamba kwambiri, motero imakhala ndi kukana kwamphamvu kwamafuta.

4. Mphamvu zamagetsi zabwino kwambiri: kutsekemera kwabwino kwapamwamba, 1014Ω-cm pa 25 ° C, ndi 103Ω-cm pa 2000 ° C. Ndi chinthu chabwinoko chotenthetsera kutentha kwambiri muzoumba, chokhala ndi voliyumu yowonongeka ya 3KV/MV ndi kutayika kwa dielectric kochepa kwa 108HZ. Ikakhala 2.5 × 10-4, dielectric yokhazikika ndi 4, ndipo imatha kutumiza ma microwave ndi kuwala kwa infrared.

5. Good dzimbiri kukana: ndi zitsulo wamba (chitsulo, mkuwa, aluminiyamu, lead, etc.), osowa nthaka zitsulo, zitsulo zamtengo wapatali, zipangizo semiconductor (germanium, pakachitsulo, potaziyamu arsenide), galasi, mchere wosungunuka (crystal mwala, fluoride , slag), ma inorganic acid, ma alkali samachita.

6. Low coefficient of friction: U ndi 0.16, zomwe sizikuwonjezeka pa kutentha kwakukulu. Imalimbana ndi kutentha kwambiri kuposa molybdenum disulfide ndi graphite. Mpweya wa okosijeni ukhoza kugwiritsidwa ntchito mpaka 900 ° C, ndipo vacuum imatha kugwiritsidwa ntchito mpaka 2000 ° C.

7. Chiyero chachikulu: zonyansa zake ndi zosakwana 10PPM, ndipo B zomwe zili ndi B ndizoposa 43.6%.

8. Machinability: Kuuma kwake ndi Mohs 2, kotero kungathe kusinthidwa kukhala magawo ndi ndondomeko yolondola kwambiri ndi njira zopangira makina.

Chiwerengero cha ntchito

1. Boron nitride ndi zinthu zopanda poizoni, kukana kutentha kwapamwamba, kukana kwa dzimbiri, kutsekemera kwapamwamba, kutsekemera kwapamwamba komanso mafuta abwino kwambiri.

2. Zonsezi ndi insulator yamagetsi ndi chowotcha chotenthetsera, electrolysis yapadera ndi zipangizo zotsutsa pansi pa kutentha kwapamwamba, insulators ya high-voltage high-frequency magetsi ndi plasma arcs.

3. Ikhoza kugwiritsidwa ntchito ngati chinthu cholimba cha doping cha semiconductors, ndi mafuta omwe amatsutsana ndi okosijeni kapena madzi.

4. Mafuta otenthetsera kwambiri komanso kutulutsa nkhungu kwa zitsanzo, ufa wa boron nitride ukhoza kugwiritsidwanso ntchito ngati chotulutsa mikanda yagalasi, komanso kutulutsa nkhungu pamagalasi ndi zitsulo.

5. Zinthu zolimba kwambiri zokonzedwa ndi boron nitride zitha kupangidwa kukhala zida zodula kwambiri komanso zobowola kuti zifufuze za geological ndi pobowola mafuta.

6. Zipangizo zamakina opangira ma atomiki, ma nozzles a injini za ndege ndi rocket, zida zonyamula kuti ziteteze ku radiation ya neutroni, ndi zida zoteteza kutentha mumlengalenga.

7. Ndiwopanda poizoni komanso alibe vuto lililonse ndipo ali ndi mafuta, omwe angagwiritsidwe ntchito ngati zodzoladzola zodzoladzola.

8. Pogwiritsa ntchito chothandizira, amatha kusinthidwa kukhala kiyubiki boron nitride molimba ngati diamondi pambuyo pa kutentha kwakukulu ndi chithandizo chapamwamba.

9. Pangani mabwato osiyanasiyana a evaporation a capacitor film aluminiyamu plating, chithunzi chubu aluminiyamu plating, kusonyeza zitsulo zotayidwa plating, etc.

10. Kutentha-kusindikiza desiccant kwa transistors ndi zowonjezera za ma polima monga ma resin apulasitiki.

11. Mitundu yosiyanasiyana ya laser anti-counterfeiting aluminiyamu plating, chizindikiro cha bronzing zipangizo, zolemba za ndudu zosiyanasiyana, zilembo za mowa, mabokosi olongedza, mabokosi onyamula ndudu, ndi zina zotero.