Intro rau Aluminium Nitride Ceramics
Lub teeb yuag aluminium nitride (AlN) yog cov khoom siv ua haujlwm siab ceramic uas tau txais kev lees paub dav dav rau nws cov thermal conductivity zoo, hluav taws xob rwb thaiv tsev, thiab mechanical kev ruaj ntseg ntawm qhov kub siab. Nrog lub hexagonal wurtzite siv lead ua qauv, AlN nthuav tawm qhov sib txawv ntawm cov khoom uas ua rau nws yog ib qho khoom siv zoo tshaj plaws rau cov ntawv thov hauv cov khoom siv hluav taws xob., optoelectronics, cov khoom siv fais fab, thiab kub kub ib puag ncig. Nws lub peev xwm los ua kom muaj cua sov kom zoo thaum tswj hwm qhov tshwj xeeb dielectric stamina chaw AlN raws li kev xaiv hwm rau cov khoom siv ceramic xws li alumina thiab beryllium oxide.. Qhov kev sau ntawv no tshawb txog cov yam ntxwv tseem ceeb ntawm aluminium nitride ceramics, saib rau hauv cov tswv yim tsim khoom, thiab qhia txog nws txoj haujlwm tseem ceeb ntawm cov khoom siv thev naus laus zis.
(Aluminium Nitride Ceramics)
Crystal Framework thiab Fundamental Feature
Kev ua tau zoo ntawm lub teeb yuag aluminium nitride raws li cov khoom siv substratum yog feem ntau dictated los ntawm nws cov crystalline moj khaum thiab innate lub cev lub tsev.. AlN siv rau ntawm wurtzite-hom lattice ua los ntawm alternating aluminium thiab nitrogen atoms, uas ua rau nws siab thermal conductivity– feem ntau surpassing 180 W/(m · K), nrog qee cov qauv siab purity ua tiav 320 W/(m · K). Cov nqi no muaj ntau tshaj qhov ntawm lwm cov khoom siv ceramics, suav nrog alumina (~ 24 W/(m · K) )thiab silicon carbide (~ 90 W/(m · K)).
Ntxiv nrog rau nws cov thermal ua haujlwm, AlN muaj qhov dav dav ntawm ib puag ncig 6.2 eV, ua rau cov hluav taws xob rwb thaiv tsev zoo heev txawm tias thaum tshav kub kub. Nws kuj qhia tau hais tias tsis tshua muaj thermal kev loj hlob (CTE yog ib qho tseem ceeb tshaj plaws nyob rau hauv kev ua lag luam 4.5 × 10 ⁻⁶ / K), uas ua tib zoo sib xws ntawm silicon thiab gallium arsenide, ua nws ib tug zoo haum rau semiconductor gadget khoom ntim. Tsis tas li ntawd, AlN nthuav tawm cov tshuaj lom neeg tsis zoo thiab ua haujlwm rau cov hlau molten, txhim kho nws qhov tsim nyog rau qhov chaw ntxhib. Cov yam ntxwv sib xyaw no tsim AlN ua ib qho kev cia siab rau lub zog loj digital substratums thiab thermally handled systems.
Tsim thiab Sintering Technologies
Ua kom zoo lub teeb yuag aluminium nitride porcelains yuav tsum muaj cov hmoov sib xyaw ua ke thiab sintering txoj kev kom ua tiav cov txheej txheem tuab nrog cov pa phem tsawg.. Vim nws txoj kev sib raug zoo sib raug zoo, AlN tsis nrawm nrawm los ntawm cov txheej txheem tsis muaj zog sintering. Yog li ntawd, sintering pab xws li yttrium oxide (Y OB OB SIX), calcium oxide (CaO), los yog tsis tshua muaj ntiaj chaw feem ntau ntxiv los txhawb cov kua-theem sintering thiab txhim kho grain ciam teb diffusion.
Cov txheej txheem tsim khoom ib txwm pib nrog kev txo qis ntawm aluminium oxide nyob rau hauv ib puag ncig nitrogen los tsim AlN hmoov. Cov hmoov no ces crushed, tsim los ntawm txoj kev xws li daim kab xev casting lossis txhaj tshuaj molding, thiab sintered ntawm qhov kub thiab txias hauv nruab nrab 1700 ° C thiab 1900 ° C nyob rau hauv ib puag ncig uas muaj nitrogen. Kub nias los yog txhawb nqa plasma sintering (SPS) muaj peev xwm ntxiv boost ntom thiab thermal conductivity los ntawm kev txo porosity thiab txhawb nqa grain positioning. Advanced additive manufacturing techniques tseem tab tom tshawb nrhiav los tsim cov txheej txheem zoo li AlN nrog rau kev tswj xyuas thermal..
Daim ntawv thov nyob rau hauv Electronic Product Packaging and Power Modules
Ib qho ntawm cov kev siv pom zoo tshaj plaws ntawm lub teeb yuag aluminium nitride ceramics yog nyob rau hauv cov khoom siv hluav taws xob, tshwj xeeb tshaj yog rau cov cuab yeej siv hluav taws xob siab xws li insulated gateway bipolar transistors (IGBTs), laser diodes, thiab superhigh zaus (RF) amplifiers. Raws li lub zog thickness nce hauv cov khoom siv hluav taws xob niaj hnub no, Kev ua kom sov so kom zoo ua qhov tseem ceeb kom ntseeg tau tias muaj kev ntseeg siab thiab lub neej ntev. AlN substratums muab cov kev daws teeb meem zoo tshaj plaws los ntawm kev sib txuas cov thermal conductivity nrog cov hluav taws xob zoo heev, tiv thaiv luv luv circuits thiab thermal runaway tej yam kev mob.
Tsis tas li ntawd, AlN-raws li ncaj adhered tooj liab (DBC) thiab muaj zog hlau brazed (Nrog) substrates tau ua haujlwm zuj zus nyob rau hauv cov qauv fais fab rau cov tsheb hluav taws xob, renewable resource inverters, thiab industrial electric tsav tsav. Contrasted rau pa alumina los yog silicon nitride substratums, AlN muab kev hloov pauv sai dua thiab ua tau zoo dua nrog silicon nti coefficients ntawm thermal expansion, yog li txo cov neeg kho tshuab nro thiab txhim kho tag nrho cov kev ua haujlwm. Kev tshawb fawb tsis tu ncua yog txhawm rau txhim kho kev sib raug zoo ntawm kev sib raug zoo thiab kev sib txuas ua ke ntawm AlN thaj chaw kom nthuav dav nws daim ntawv thov..
Siv hauv Optoelectronic thiab High-Temperature Gadget
Tshaj li kev ntim khoom siv hluav taws xob, aluminium nitride porcelains ua lub luag haujlwm tseem ceeb hauv kev siv optoelectronic thiab kub-kub vim lawv cov pob tshab rau ultraviolet. (UV) hluav taws xob thiab thermal kev ruaj ntseg. AlN feem ntau yog siv los ua substrate rau sib sib zog nqus UV teeb-emitting diodes (LEDs) thiab laser diodes, tshwj xeeb tshaj yog nyob rau hauv daim ntawv thov kev huv, kev paub, thiab kev sib txuas lus kho qhov muag. Nws qhov dav bandgap thiab qis nqus coefficient hauv UV ntau ua rau nws yog tus neeg sib tw tsim nyog rau kev txhawb nqa lub teeb yuag aluminium gallium nitride. (AlGaN)-raws li heterostructures.
Ntxiv rau, AlN lub peev xwm ua haujlwm kom raug ntawm qhov kub siab tshaj 1000 ° C ua rau nws tsim nyog rau kev siv hauv sensors, thermoelectric generators, thiab cov khoom raug rau cov thermal ntau heev. Hauv kev lag luam aerospace thiab kev tiv thaiv, AlN-based sensing unit cov phiaj xwm yog siv rau hauv lub dav hlau lub cav soj ntsuam cov tshuab thiab cov cuab yeej tswj qhov kub thiab txias qhov twg cov khoom siv ib txwm ua tsis tiav.. Kev nruam txuas ntxiv hauv cov yeeb yaj kiab nyias nyias thiab cov tswv yim kev loj hlob epitaxial tau nthuav dav qhov muaj peev xwm ntawm AlN hauv cov tiam tom ntej optoelectronic thiab cov cua kub sib xyaw ua ke..
( Aluminium Nitride Ceramics)
Ecological Stability thiab Long-term Integrity
Ib qho kev txiav txim siab tseem ceeb rau txhua yam ntawm cov khoom siv substrate yog nws txoj kev ntseeg ruaj khov nyob rau hauv kev ua haujlwm nyuaj. Lub teeb yuag aluminium nitride qhia tau zoo kawg li ib puag ncig kev ruaj ntseg zoo sib xws rau ntau lwm yam ceramics. Nws muaj kev tiv thaiv zoo rau kev puas tsuaj los ntawm acids, alkalis, thiab molten steels, ua kom tawv tawv hauv cov tshuaj lom neeg nruj heev. Txawm li cas los, AlN yog nquag hydrolysis thaum raug cov dej noo ntawm qhov kub thiab txias, uas tuaj yeem degrade nws nto thiab qis thermal ua haujlwm.
Kom txo tau qhov teeb meem no, kev ruaj ntseg tiav xws li silicon nitride (Si ₃ N ₄), lub teeb yuag aluminium oxide, los yog polymer-based encapsulation txheej feem ntau muab tso rau kev txhim kho cov dej noo. Tsis tas li ntawd, Kev paub txog kev ruaj ntseg thiab cov khoom ntim cov khoom siv tau siv thoob plaws hauv gadget teeb tsa kom muaj kev ncaj ncees ntawm AlN substrates thoob plaws hauv lawv lub neej kev pabcuam. Raws li ecological txoj cai los ua kom nruj dua, the non-toxic nature of AlN additionally places it as a preferred alternative to beryllium oxide, which poses wellness risks throughout processing and disposal.
Txiav txim
Light weight aluminum nitride ceramics represent a class of innovative products distinctly fit to address the expanding needs for effective thermal administration and electrical insulation in high-performance electronic and optoelectronic systems. Their outstanding thermal conductivity, kev ruaj ntseg tshuaj, and compatibility with semiconductor technologies make them one of the most suitable substrate material for a variety of applications– from vehicle power modules to deep UV LEDs and high-temperature sensors. As manufacture innovations remain to progress and affordable manufacturing techniques grow, the fostering of AlN substratums is anticipated to rise substantially, tsav tsheb innovation nyob rau hauv tiam tom ntej digital thiab photonic li.
Tus neeg muag khoom
Advanced Ceramics nrhiav tau rau lub Kaum Hlis 17, 2012, yog lub tuam txhab high-tech cog lus rau kev tshawb fawb thiab kev tsim kho, ntau lawm, ua, kev muag khoom thiab kev pabcuam ntawm cov khoom siv ceramic txheeb ze thiab cov khoom lag luam. Peb cov khoom suav nrog tab sis tsis txwv rau Boron Carbide Ceramic Cov Khoom, Boron Nitride Ceramic Khoom, Silicon Carbide Ceramic Khoom, Silicon Nitride Ceramic Khoom, Zirconium Dioxide Ceramic Khoom, lwm. Yog koj txaus siab, thov koj xav tiv tauj peb.([email protected])
Cim npe: aluminium nitride ceramic, txhuas nitride, aln aluminium nitride ceramic
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