Pyrolytic Boron Nitride Crucibles

Mawu Oyamba

Pyrolytic BN kapena PBN ndichidule cha pyrolytic boron nitride. Ndi mtundu wa hexagonal boron nitride wopangidwa ndi njira ya chemical vapor deposition (CVD), yomwenso ndi boron nitride yoyera kwambiri yomwe imatha kufika kupitirira 99.99%, osaphimba pafupifupi porosity.

Kapangidwe

Monga tafotokozera pamwambapa, pyrolytic boron nitride (PBN) ndi membala wa hexagonal system. Kutalikirana kwa ma atomiki apakati-wosanjikiza ndi 1.45 ndipo malo apakati-wosanjikiza atomiki ndi 3.33, komwe kuli kusiyana kwakukulu. Makina ojambulira a PBN ndi ababab, ndipo kapangidwe kake kamapangidwa ndi ma atomu a B ndi N mu wosanjikiza komanso motsatira C axis, motsatana.

Ubwino

Zida za PBN zimagonjetsedwa kwambiri ndi kutentha kwa kutentha ndipo zimakhala ndi matenthedwe amtundu wa anisotropic (odalira njira). Kuphatikiza apo, PBN imapanga insulator yapamwamba kwambiri yamagetsi. Zinthuzi ndi zokhazikika mu inert, kuchepetsa, ndi oxidizing atmospheres mpaka 2800°C ndi 850°C, motsatana.

Pankhani ya mankhwala, PBN ikhoza kupangidwa kukhala 2D kapena 3D zinthu monga crucibles, mabwato, mbale, zopyapyala, machubu, ndi mabotolo, kapena angagwiritsidwe ntchito ngati zokutira kwa graphite. Zambiri mwazitsulo zosungunula (Al, Ag, Cu, Ga, Ge, Sn, etc.), asidi, ndi ammonia otentha ndi zina mwa nthawi zomwe PBN imawonetsa kukhazikika kwa kutentha kwapadera ikakutidwa pa graphite mpaka 1700 ° C, kukana kugwedezeka kwa kutentha, ndi kukana kutentha kwa mpweya.

Zogulitsa

PBN Crucible: PBN crucible ndiye chidebe choyenera kwambiri popanga ma semiconductor single crystals, ndipo sichingasinthidwe;

Mu ndondomeko MBE, ndi abwino chidebe kwa zinthu evaporating ndi mankhwala;

Komanso, pyrolytic boron nitride crucible imagwiritsidwa ntchito ngati chidebe cha evaporation mumizere yopanga OLED.

• PG/PBN Heater: Nyezi za PBN zimene zingagwiritsidwe ntchito ndi monga kutenthetsa kwa MOCVD, Kutenthetsa kwa Zitsulo, kutentha kwa evaporation, kutentha kwapamwamba kwambiri, kutentha kwachitsanzo, kutentha kwachitsanzo cha ma electron maikulosikopu, kutentha kwa gawo la semiconductor, ndi zina zotero.

   

• PBN Sheet/Ring: PBN ili ndi zinthu zapadera pakatentha kwambiri, monga kuyera kwake komanso kutha kupirira kutentha mpaka 2300 °C mu vacuum yokwera kwambiri popanda kuwola. Kupatula apo, sizimatulutsa zinthu zoipitsa mpweya. Katundu wamtunduwu amalolanso kuti PBN isinthidwe kukhala ma geometries osiyanasiyana.

  
  

• PBN wokutidwa Graphite: PBN ali ndi kuthekera kukhala ogwira mchere fuloridi wetted zakuthupi kuti, pamene ntchito graphite, akhoza kuletsa kucheza pakati pa zipangizo. Choncho, nthawi zambiri amagwiritsidwa ntchito kuteteza zigawo za graphite mu makina.

PBN Zinthu munjira ya TFPV

Kugwiritsa ntchito zinthu za PBN mu njira ya TFPV(thin film photovoltaic) kumathandizira kuchepetsa mtengo woyikapo ndikuwonjezera mphamvu ya ma PV cell, kupangitsa magetsi adzuwa kukhala otchipa kupanga ngati njira zopangira kaboni.

Mapeto

Mafakitale ambiri amapeza kugwiritsa ntchito kwambiri pyrolytic boron nitride. Kugwiritsiridwa ntchito kwake kofala kumatha chifukwa cha makhalidwe ake abwino, kuphatikizapo ukhondo wabwino kwambiri komanso kukana dzimbiri. Kugwiritsa ntchito pyrolytic boron nitride m'magawo osiyanasiyana akuphunziridwabe.