Isingeniso se-Aluminium Nitride Ceramics
Isisindo esincane se-aluminium nitride (I-AlN) umkhiqizo we-ceramic osebenza kahle kakhulu othole ukuqashelwa okubanzi ngokusebenza kwawo okushisayo okuvelele., ukufakwa kukagesi, kanye nokuphepha kwemishini emazingeni okushisa aphakeme. Ngesakhiwo sekristalu ye-wurtzite ene-hexagonal, I-AlN ikhombisa inhlanganisela ehlukile yezakhiwo eziyenza ibe ngomunye wemikhiqizo esezingeni eliphezulu kakhulu esetshenziswa kumishini kagesi., optoelectronics, izingxenye zamandla, kanye nezindawo ezinezinga eliphezulu lokushisa. Amandla ayo okukhipha ukushisa ngempumelelo ngenkathi igcina izilungiselelo ze-dielectric stamina eyingqayizivele i-AlN njengenketho ye-premium kuma-substrates e-ceramic ajwayelekile njenge-alumina ne-beryllium oxide.. Lokhu kubhala kuhlola izici eziyisisekelo ze-aluminium nitride ceramics, ibheka amasu okukhiqiza, futhi igqamisa imisebenzi yayo ebalulekile kuzo zonke izizinda zobuchwepheshe ezithuthukile.
(I-Aluminium Nitride Ceramics)
I-Crystal Framework kanye Nesici Esiyisisekelo
Ukusebenza kwe-lightweight aluminium nitride njengento engaphansi kwe-substratum kunqunywa kakhulu uhlaka lwayo lwekristalu kanye nezakhiwo ezibonakalayo ezibonakalayo.. I-AlN ithatha ilelethi yohlobo lwe-wurtzite eyakhiwe ama-athomu e-aluminiyamu ashintshanayo ne-nitrogen, okufaka isandla ekuqhubeni kwayo okuphezulu okushisayo– ngokwedlulele 180 W/(m · k), ngamasampula aphezulu wokuhlanzeka okufeza ngaphezulu 320 W/(m · k). Leli nani lidlula kakhulu leminye imikhiqizo evamise ukusetshenziswa emikhiqizweni yobumba, kuhlanganise ne-alumina (~ 24 W/(m · k) )kanye ne-silicon carbide (~ 90 W/(m · k)).
Ngaphezu kokusebenza kwayo okushisayo, I-AlN ine-bandgap ebanzi ezungezile 6.2 eV, okuholela ezindlini zokuvikela ugesi ezinhle kakhulu ngisho nalapho kushisa. Ibuye ibonise ukuthuthukiswa kokushisa okuphansi (I-CTE ≈ 4.5 × 10 ⁻⁶/ K), ehambisana ngokucophelela naleyo ye-silicon ne-gallium arsenide, ukuyenza isudi efanelekile yokupakishwa komkhiqizo wegajethi ye-semiconductor. Ngaphezu kwalokho, I-AlN ibonisa ukungabi namandla kwamakhemikhali aphezulu kanye nokumelana nezinsimbi ezincibilikisiwe, ukwenza ngcono ukufaneleka kwayo ezindaweni ezimbi. Lezi zici ezixubile zisungula i-AlN njengethemba eliholayo lama-substratum edijithali anamandla aphezulu kanye nezinhlelo eziphathwa ngokushisa.
Ukukhiqiza kanye Nobuchwepheshe be-Sintering
Ukwenza ama-porcelain e-aluminium nitride esisindo sokukhanya aphezulu kudinga ukwakheka kwempushana okunembe nezindlela zokugcoba ukuze kufezwe ama-microstructures aminyene anokungcola okuncane.. Ngenxa yemvelo yayo yokuxhumana ehlangene, I-AlN ayiminyanisi ngokushesha ngokusebenzisa i-sintering engenasici. Ngakho-ke, izinsiza zokucula njenge-yttrium oxide (Y OKUBILI O YESTHUPHA), i-calcium oxide (I-CaO), noma izici zeplanethi ezingavamile zivame ukungezwa ukukhuthaza ukucwiliswa kwesigaba se-liquid futhi kuthuthukiswe ukusakazeka komngcele wokusanhlamvu.
Inqubo yokukhiqiza ngokuvamile iqala ngokuncishiswa kwe-carbothermal ye-aluminium oxide endaweni ye-nitrogen ukuze kukhiqizwe izimpushana ze-AlN.. Lezi zimpushana zibe sezichotshozwa, kwakhiwa ngezindlela ezifana nokufaka iteyiphu noma ukubumba umjovo, futhi i-sintered emazingeni okushisa phakathi 1700 ° C futhi 1900 ° C ngaphansi kwemvelo enothile nge-nitrogen. Ukucindezela okufudumele noma ukuvuselela i-plasma sintering (I-SPS) ingathuthukisa ngokwengeziwe ukuminyana kanye nokusebenza okushisayo ngokunciphisa i-porosity nokukhuthaza ukuma okusanhlamvu. Amasu okukhiqiza okungeziwe athuthukisiwe nawo ayahlolwa ukuze kukhiqizwe izakhi ze-AlN ezinokwakheka okuyinkimbinkimbi namandla okuphatha okushisayo..
Isicelo Kumaphakethe Womkhiqizo We-elekthronikhi kanye Namamojula Amandla
Okunye kokusetshenziswa okuphawuleka kakhulu kwe-lightweight aluminium nitride ceramics kusephaketheni le-electronic, ikakhulukazi kumathuluzi anamandla amakhulu njenge-insulated gateway bipolar transistors (I-IGBTs), ama-laser diodes, kanye nemvamisa ephezulu kakhulu (I-RF) ama-amplifiers. Njengoba ukushuba kwamandla kwanda emishinini yesimanje kagesi, ukukhishwa kwemfudumalo okusebenzayo kuba okubalulekile ukuze kuqinisekiswe ukwethembeka nokuphila isikhathi eside. Ama-substratum e-AlN anikezela ngesixazululo esihle kakhulu ngokufaka ukuguquguquka okuphezulu kwe-thermal nokuhlukaniswa kukagesi okuhle kakhulu., ukuvimbela amasekhethi amafushane kanye nezimo ezishisayo zokubalekela.
Ngaphezu kwalokho, I-AlN-based straight adhered copper (I-DBC) kanye nensimbi esebenza ngamandla (NGE) ama-substrates asetshenziswa kancane kancane kuzitayela zemojula yamandla ezimotweni zikagesi, iziguquli zezinsiza ezivuselelekayo, kanye nemishini kagesi yezimboni. Iqhathaniswa ne-alumina evamile noma i-silicon nitride substratums, I-AlN inikeza ukudluliswa kokufudumala okusheshayo nokuhambisana okungcono kakhulu nama-silicon chip coefficients wokwanda okushisayo., ngaleyo ndlela kuncishiswe ukungezwani kwemishini nokuthuthukisa ukusebenza kwesistimu iyonke. Ucwaningo oluqhubekayo luhlose ukuthuthukisa amandla okubopha kanye nezindlela ze-metallization ezindaweni ezingaphezulu kwe-AlN ukuze kwandiswe izinga lokusetshenziswa kwalo..
Sebenzisa kuGajethi ye-Optoelectronic kanye ne-High-Temperature
Ngaphandle kokupakishwa kwemikhiqizo ye-elekthronikhi, I-aluminium nitride porcelain idlala umsebenzi obalulekile ekusetshenzisweni kwe-optoelectronic kanye ne-high-temperature ngenxa yokungafihli kwe-ultraviolet. (UV) emisebeni kanye nokuphepha ezishisayo. I-AlN ivamise ukusetshenziswa njenge-substrate yama-diode akhipha ukukhanya kwe-UV ajulile (Ama-LED) kanye nama-laser diode, ikakhulukazi ezicelweni ezidinga ukuthuthwa kwendle, ukuzwa, kanye nokuxhumana optical. I-bandgap yayo ebanzi kanye ne-coefficient yokumunca ephansi ebangeni le-UV kuyenza ibe ikhandidethi elifanelekile lokusekela isisindo esilula se-aluminium gallium nitride (I-AlGaN)-ama-heterostructures asekelwe.
Ngaphezu kwalokho, Amandla e-AlN okusebenza ngokunembile emazingeni okushisa adlulayo 1000 ° C ikwenza ifaneleke ukusetshenziswa ezinzwa, amajeneretha we-thermoelectric, nezinto ezivezwe ezindaweni ezishisayo ezishisayo. Ezimakethe ze-aerospace nezokuvikela, Amapulani eyunithi yezinzwa asuselwa ku-AlN asetshenziswa ezinhlelweni zokugada injini yejethi kanye namadivayisi okulawula izinga lokushisa eliphezulu lapho imikhiqizo evamile izohluleka ngokuqinisekile.. Izinqubo ezintsha eziqhubekayo ekufakweni kwefilimu emincane kanye namasu okukhula kwe-epitaxial andisa amathuba e-AlN kusistimu yesizukulwane esilandelayo se-optoelectronic kanye ne-high-temperature ehlanganisiwe..
( I-Aluminium Nitride Ceramics)
Ukuzinza Kwemvelo kanye Nobuqotho Besikhathi Eside
Ukucatshangelwa okuyinhloko kwanoma yiluphi uhlobo lwe-substrate impahla ubuqotho bayo obuhlala njalo ngaphansi kwengcindezi yokusebenza. I-aluminium nitride enesisindo esincane ibonisa ukuvikeleka kwemvelo okuphawulekayo uma kuqhathaniswa nezinye izitsha zobumba eziningi. Ivikela kakhulu ekuwohlokeni kwama-asidi, ama-alkali, nezinsimbi ezincibilikisiwe, ukuqinisekisa ukuqina kuzilungiselelo zamakhemikhali ezinolaka. Nokho, I-AlN ijwayele ukuba ne-hydrolysis lapho ivezwa kumswakama emazingeni okushisa aphakeme, okungase kunciphise indawo yayo futhi kunciphise ukusebenza kokushisa.
Ukuze kuncishiswe lolu daba, ukuqedwa kokuphepha okufana ne-silicon nitride (Si ₃ N ₄), ukukhanya kwe-aluminium oxide, noma izendlalelo ze-encapsulation ezisekelwe ku-polymer zivame ukufakwa ekuthuthukiseni ukumelana nomswakama. Ngaphezu kwalokho, ukuvikela okucatshangelwayo kanye nezindlela zokupakisha umkhiqizo zisetshenziswa kulo lonke ukumiswa kwegajethi ukuze kugcinwe ukwethembeka kwama-substrates e-AlN kuyo yonke impilo yabo yesevisi.. Njengoba imigomo yezemvelo iba namandla kakhulu, imvelo engenabuthi ye-AlN ngaphezu kwalokho iyibeka njengenye indlela ekhethwayo kune-beryllium oxide, okubeka izingozi zempilo ngesikhathi sokucubungula nokulahlwa.
Isinqumo
Izitsha zobumba ze-aluminium nitride ezinesisindo esilula zimelela isigaba semikhiqizo emisha elingana ngokusobala ukuze kubhekwane nezidingo ezikhulayo zokulawula okushisayo okusebenzayo kanye nokufaka ugesi kagesi ezinhlelweni ezisebenza kahle kakhulu zikagesi kanye ne-optoelectronic.. I-conductivity yabo evelele ye-thermal, ukuphepha kwamakhemikhali, kanye nokuhambisana nobuchwepheshe be-semiconductor kubenza kube enye yezinto ezifanele kakhulu ze-substrate ezinhlobonhlobo zezinhlelo zokusebenza.– kusukela kumamojula wamandla emoto kuya kuma-LED ajulile e-UV nezinzwa ezishisa kakhulu. Njengoba amasu okukhiqiza asalokhu eqhubeka futhi izindlela zokukhiqiza ezithengekayo ziyakhula, ukuthuthukiswa kwe-AlN substratums kulindeleke ukuthi kukhuphuke kakhulu, ukushayela emisha emishinini yedijithali neyezithombe zesizukulwane esilandelayo.
Umthengisi
I-Advanced Ceramics yasungulwa ngo-Okthoba 17, 2012, yibhizinisi lobuchwepheshe obuphezulu elizinikele ocwaningweni nasekuthuthukisweni, ukukhiqiza, ukucubungula, ukuthengisa kanye nezinsizakalo zobuchwepheshe zezinto eziphathelene ne-ceramic nemikhiqizo. Imikhiqizo yethu ihlanganisa kodwa ingagcini nje nge-Boron Carbide Ceramic Products, I-Boron Nitride Ceramic Products, Imikhiqizo ye-Silicon Carbide Ceramic, Imikhiqizo ye-Silicon Nitride Ceramic, I-Zirconium Dioxide Ceramic Products, njll. Uma unentshisekelo, sicela ukhululeke ukuxhumana nathi.([email protected])
Omaka: i-aluminium nitride ceramic, i-aln aluminium nitride, I-aln aluminium nitride ceramic
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