Aluminium Nitride Crucible ALN Aluminium Crucible
Kuwonetsa Zamalonda
AlN Amapangidwa ndi kuchepetsa kutentha kwa alumina kapena ndi nitride mwachindunji ya alumina.Ili ndi kachulukidwe ka 3.26 Olembetsedwa & Kutetezedwa ndi MarkMonitor-3, ngakhale samasungunuka, amawola pamwamba pa 2500 ° C m'mlengalenga.Zinthuzo zimamangika mwamphamvu ndipo zimakana kuyimitsa popanda kuthandizidwa ndi chowonjezera chopanga madzi.Nthawi zambiri, ma oxides monga Y 2 O 3 kapena CaO amalola kukwaniritsa kutentha kwapakati pa 1600 ndi 1900 ° C.
Aluminiyamu nitride ndi zida za ceramic zomwe zimagwira ntchito bwino kwambiri, ndipo kafukufuku wake ukhoza kuyambika zaka zoposa zana zapitazo.Amapangidwa ndi F. Birgeler ndi A. Geuhter Anapezeka mu 1862, ndipo mu 1877 ndi JW MalletS Aluminium nitride anapangidwa kwa nthawi yoyamba, koma sizinagwiritsidwe ntchito kwa zaka zoposa 100, pamene ankagwiritsidwa ntchito ngati feteleza wa mankhwala. .
Chifukwa aluminiyamu nitride ndi covalent pawiri, ndi pang'ono kudzipatula coefficient ndi mkulu kusungunuka, ndi kovuta sintering.Sizinafike mpaka zaka za m'ma 1950 pamene zoumba za aluminiyamu za nitride zidapangidwa bwino kwa nthawi yoyamba ndikugwiritsidwa ntchito ngati zinthu zokanira posungunula chitsulo choyera, aluminiyumu ndi aloyi ya aluminiyamu.Kuyambira m'ma 1970, ndikuzama kwa kafukufuku, njira yokonzekera aluminium nitride yakula kwambiri, ndipo kuchuluka kwake kwakugwiritsa ntchito kukukulirakulira.Makamaka kuyambira kulowa m'zaka za m'ma 21, ndi kukula mofulumira kwa teknoloji ya microelectronics, makina apakompyuta ndi zipangizo zamagetsi ku miniaturization, opepuka, kuphatikiza, ndi kudalirika kwambiri ndi mphamvu linanena bungwe malangizo, ndi zovuta kwambiri zipangizo gawo lapansi ndi ma CD zipangizo za kutentha dissipation kuika. patsogolo zofunika kwambiri, kupititsa patsogolo chitukuko champhamvu cha mafakitale a aluminium nitride.
Main Features
AlN Kukana kukokoloka kwa zitsulo zambiri zosungunuka, makamaka aluminiyamu, lithiamu ndi mkuwa.
Imalimbana ndi kukokoloka kwa mchere wambiri, kuphatikiza ma chloride ndi cryolite
High matenthedwe madutsidwe zipangizo ceramic (pambuyo beryllium okusayidi)
High volume resistivity
Mphamvu yapamwamba ya dielectric
Amakokoloka ndi asidi ndi alkali
Mu mawonekedwe a ufa, mosavuta hydrolyzed ndi madzi kapena chinyezi chinyezi
Main Application
1, kugwiritsa ntchito chipangizo cha piezoelectric
Aluminiyamu nitride ali ndi resistivity mkulu, mkulu matenthedwe madutsidwe (nthawi 8-10 Al2O3), ndi otsika kukulitsa coefficient ofanana ndi pakachitsulo, amene ndi mfundo yabwino kutentha ndi mkulu mphamvu zipangizo zamagetsi.
2, pakompyuta ma CD gawo lapansi zakuthupi
Zida zomwe zimagwiritsidwa ntchito kwambiri ndi beryllium oxide, alumina, aluminium nitride, ndi zina zotero, momwe gawo lapansi la aluminiyamu la ceramic lili ndi kutsika kwa kutentha, mphamvu yowonjezera kutentha sikufanana ndi silicon;ngakhale beryllium oxide ali ndi katundu wabwino kwambiri, koma ufa wake ndi woopsa kwambiri.
Mwa zida za ceramic zomwe zingagwiritsidwe ntchito ngati zida zam'munsi, silicon nitride ceramic ili ndi mphamvu yopindika kwambiri, kukana kuvala bwino, ndi zida za ceramic zomwe zimachita bwino kwambiri pamakina, komanso kagawo kakang'ono kwambiri kakuwonjezera kutentha.Aluminiyamu nitride ceramics ndi mkulu matenthedwe madutsidwe, zabwino matenthedwe kukana mphamvu, ndipo akadali ndi katundu makina abwino kutentha kwambiri.Pankhani ya magwiridwe antchito, aluminium nitride ndi silicon nitride pakali pano ndi zida zoyenera kwambiri zamagawo apakompyuta, koma amakhalanso ndi vuto wamba ndikuti mtengo wake ndi wokwera kwambiri.
3, ndipo amagwiritsidwa ntchito kuzinthu zowunikira
Kutalikirana kwakukulu kwa kusiyana kwa aluminiyamu nitride (AlN) ndi 6.2 eV, yomwe imakhala ndi kutembenuka kwamphamvu kwazithunzi poyerekeza ndi semiconductor ya indirect bandgap.AlN Monga kuwala kofunikira kwa buluu ndi zinthu zotulutsa kuwala kwa UV, imayikidwa ku UV / deep UV-emitting diode, UV laser diode ndi UV chowunikira.Kuphatikiza apo, AlN imatha kupanga njira zolimba zopitilira ndi ma nitridi a gulu la III monga GaN ndi InN, ndipo aloyi yake ya ternary kapena quaternary imatha kusintha mosalekeza kusiyana kwake kwa bandi kuchokera kumawonekedwe kupita kumagulu akuya a ultraviolet, ndikupangitsa kuti ikhale yofunika kwambiri yowunikira.
4, zomwe zimagwiritsidwa ntchito pazinthu zapansi panthaka
Makristalo a AlN ndi gawo lapansi labwino la GaN, AlGaN komanso AlN epitaxial materials.Poyerekeza ndi safiro kapena gawo lapansi la SiC, AlN ili ndi matenthedwe ochulukirapo ndi GaN, imakhala yogwirizana kwambiri ndi mankhwala, komanso kupsinjika kochepa pakati pa gawo lapansi ndi epitaxial layer.Choncho, pamene AlN crystal imagwiritsidwa ntchito ngati gawo laling'ono la GaN epitaxial, ikhoza kuchepetsa kwambiri kachulukidwe kachilema mu chipangizocho, kupititsa patsogolo ntchito ya chipangizocho, ndipo imakhala ndi chiyembekezo chabwino chogwiritsira ntchito pokonzekera kutentha kwakukulu, maulendo apamwamba komanso mphamvu zamagetsi zamagetsi. zipangizo.
Kuonjezera apo, gawo laling'ono la AlGaN epitaxial ndi AlN crystal monga chigawo chachikulu cha aluminiyamu (Al) chingathenso kuchepetsa kuchepa kwa chilema mu nitride epitaxial layer, ndikusintha kwambiri ntchito ndi moyo wautumiki wa chipangizo cha nitride semiconductor.Zowunikira zapamwamba zatsiku ndi tsiku zochokera ku AlGaN zagwiritsidwa ntchito bwino.
5, yogwiritsidwa ntchito muzoumba ndi zida zokanira
Aluminiyamu nitride angagwiritsidwe ntchito sintering zadothi structural, okonzeka zotayidwa nitride zoumba ndi, osati zabwino makina katundu, lopinda mphamvu ndi apamwamba kuposa Al2O3 ndi BeO zoumba, mkulu kuuma, komanso kutentha ndi dzimbiri kukana.Pogwiritsa ntchito AlN ceramic kutentha kukana ndi kukana dzimbiri, angagwiritsidwe ntchito kupanga kutentha kutentha kugonjetsedwa ndi mbali monga crucible ndi Al evaporation mbale.Kuphatikiza apo, zoumba zoyera za AlN ndi makhiristo osawoneka bwino, okhala ndi mawonekedwe abwino kwambiri, ndipo atha kugwiritsidwa ntchito ngati zenera lotentha kwambiri la infuraredi komanso zokutira zosagwira kutentha kwa zida zowonekera zopangira zida zamagetsi zamagetsi.
6. Zophatikiza
Epoxy resin / AlN composite zakuthupi, monga zonyamula katundu, zimafuna madulidwe abwino amafuta ndi kuthekera kwa kutentha, ndipo kufunikira uku kukukulirakulira.Monga polima zinthu zabwino mankhwala ndi kukhazikika makina, epoxy utomoni n'zosavuta kuchiza, ndi otsika mlingo shrinkage, koma matenthedwe madutsidwe si mkulu.Powonjezera AlN nanoparticles ndi zabwino kwambiri matenthedwe madutsidwe kwa epoxy utomoni, ndi matenthedwe madutsidwe mphamvu ndi bwino bwino.
