Aluminum Nitride Crucible ALN Aluminum Crucible
Gabatarwar Samfur
AlN Yana haɗa ta ta hanyar rage zafi na alumina ko ta nitride na alumina kai tsaye.Yana da girma na 3.26 Rijista & Kariya ta MarkMonitor-3, kodayake baya narke, yana rubewa sama da 2500 ° C a yanayi.Kayan yana da alaƙa da haɗin gwiwa kuma yana tsayayya da sintering ba tare da taimakon abin ƙara mai-ruwa ba.Yawanci, oxides kamar Y 2 O 3 ko CaO suna ba da izini don cimma daidaituwa a yanayin zafi tsakanin 1600 da 1900 ° C.
Aluminum nitride abu ne na yumbu tare da kyakkyawan aiki mai mahimmanci, kuma ana iya gano bincikensa fiye da shekaru ɗari da suka wuce.Ya ƙunshi F. Birgeler da A. Geuhter Found a cikin 1862, kuma a cikin 1877 da JW MalletS Aluminum nitride aka haɗa shi a karon farko, amma ba a yi amfani da shi ba fiye da shekaru 100, lokacin da aka yi amfani da shi azaman takin sinadari. .
Saboda aluminum nitride wani abu ne mai haɗakarwa, tare da ƙananan haɗin kai da kuma babban wurin narkewa, yana da wuya a daidaita.Sai a shekarun 1950 ne aka samu nasarar samar da yumbu nitride na aluminium a karon farko kuma aka yi amfani da shi azaman abin da zai hana a narke tsantsar ƙarfe, aluminum da aluminum gami.Tun daga shekarun 1970s, tare da zurfafa bincike, tsarin shirye-shiryen aluminum nitride ya kara girma, kuma aikace-aikacensa yana fadadawa.Musamman tun lokacin da aka shiga karni na 21, tare da haɓakar haɓakar fasahar microelectronics, injin lantarki da kayan aikin lantarki zuwa miniaturization, nauyi mai nauyi, haɗin kai, da babban aminci da jagorar fitarwa mai ƙarfi, ƙarin na'urori masu rikitarwa na substrate da kayan marufi na zubar da zafi ya sa. gaba mafi girma buƙatun, ƙara haɓaka haɓakar haɓakar masana'antar nitride aluminium.
Babban Siffofin
AlN Yana tsayayya da zaizayar mafi yawan zurfafan karafa, musamman aluminum, lithium da jan karfe
Yana da juriya ga mafi yawan yashwar gishirin narkakkar, gami da chlorides da cryolite
High thermal conductivity na yumbu (bayan beryllium oxide)
High girma resistivity
High dielectric ƙarfi
Ana lalata shi da acid da alkali
A cikin nau'in foda, ana iya sauƙaƙe shi ta hanyar ruwa ko danshi
Babban Aikace-aikacen
1, aikace-aikacen na'urar piezoelectric
Aluminum nitride yana da tsayin daka mai ƙarfi, haɓakar haɓakar thermal (sau 8-10 na Al2O3), da ƙarancin haɓakar haɓakawa mai kama da silicon, wanda shine ingantaccen abu don babban zafin jiki da na'urorin lantarki masu ƙarfi.
2, da lantarki marufi substrate abu
Abubuwan da ake amfani da su na yumbura da aka saba amfani da su sune beryllium oxide, alumina, aluminum nitride, da dai sauransu, wanda alumina yumbu substrate yana da ƙananan ƙarancin thermal, ƙimar haɓakar thermal ba ta dace da silicon ba;ko da yake beryllium oxide yana da kyawawan kaddarorin, amma foda yana da guba sosai.
Daga cikin abubuwan yumbu da aka wanzu waɗanda za'a iya amfani da su azaman kayan ƙasa, yumbu na silicon nitride yana da mafi girman ƙarfin lanƙwasa, juriya mai kyau, shine yumbu kayan aiki tare da mafi kyawun aikin injina, da ƙaramin haɓaka haɓakar thermal.Aluminum nitride yumbura suna da haɓakar haɓakar thermal, kyakkyawan juriya na thermal, kuma har yanzu suna da kyawawan kaddarorin inji a babban zafin jiki.Dangane da aiki, aluminium nitride da silicon nitride a halin yanzu sune kayan da suka fi dacewa don marufi na lantarki, amma kuma suna da matsala gama gari shine farashin ya yi yawa.
3, kuma ana amfani da su a kan kayan luminescent
Matsakaicin faɗin tazarar bandgap kai tsaye na aluminium nitride (AlN) shine 6.2 eV, wanda ke da mafi girman ingancin jujjuyawar hoto idan aka kwatanta da semiconductor bandgap kai tsaye.AlN A matsayin muhimmin haske mai shuɗi da kayan fitar da hasken UV, ana amfani da shi zuwa UV / zurfin UV mai fitar da haske, UV Laser diode da mai gano UV.Bugu da ƙari, AlN na iya samar da ingantattun mafita tare da rukuni na III nitrides kamar GaN da InN, kuma ternary ko quaternary gami na iya ci gaba da daidaita tazarar band ɗin sa daga bayyane zuwa manyan makaɗaɗɗen ultraviolet, yana mai da shi muhimmin kayan aiki mai haske.
4, wanda aka yi amfani da su a cikin kayan da ake amfani da su
Lu'ulu'u na AlN sune madaidaicin madauri don GaN, AlGaN da kayan epitaxial na AlN.Idan aka kwatanta da sapphire ko SiC substrate, AlN yana da ƙarin wasan thermal tare da GaN, yana da mafi girman dacewa da sinadarai, da ƙarancin damuwa tsakanin ƙasa da Layer epitaxial.Saboda haka, lokacin da aka yi amfani da AlN crystal a matsayin GaN epitaxial substrate, zai iya rage girman lahani a cikin na'urar, inganta aikin na'urar, kuma yana da kyakkyawan fata na aikace-aikace a cikin shirye-shiryen zafin jiki mai girma, mita mai girma da wutar lantarki mai girma. na'urori.
Bugu da kari, AlGaN epitaxial abu substrate tare da AlN crystal a matsayin babban aluminum (Al) bangaren kuma iya yadda ya kamata rage aibi yawa a cikin nitride epitaxial Layer, da kuma ƙwarai inganta yi da kuma rayuwar sabis na nitride semiconductor na'urar.An yi nasarar amfani da na'urorin gano makafi masu inganci na yau da kullun bisa AlGaN.
5, ana amfani da su a cikin yumbu da kayan refractory
Aluminum nitride za a iya amfani da sintering na tsarin yumbu, shirya aluminum nitride tukwane, ba kawai kyau inji Properties, nadawa ƙarfi ya fi Al2O3 da BeO yumbu, high taurin, amma kuma high zafin jiki da kuma lalata juriya.Yin amfani da AlN yumbu juriya da juriya na lalata, ana iya amfani dashi don yin manyan juriya na lalata yanayin zafin jiki kamar crucible da Al evaporation plate.Bugu da kari, tsarkakakken tukwane na AlN lu'ulu'u ne marasa launi, tare da kyawawan kaddarorin gani, kuma ana iya amfani da su azaman babban taga infrared na zafin jiki da murfin zafi don kera yumbu masu haske da ke kera na'urorin lantarki na gani.
6. Composits
Epoxy resin / AlN composite abu, azaman marufi, yana buƙatar ingantaccen ƙarfin zafi da iyawar zafi, kuma wannan buƙatar tana ƙara ƙarfi.A matsayin kayan aikin polymer tare da kyawawan kaddarorin sinadarai da kwanciyar hankali na inji, resin epoxy yana da sauƙin warkewa, tare da ƙarancin raguwa, amma haɓakar thermal ba ta da girma.Ta ƙara AlN nanoparticles tare da kyakkyawan yanayin zafin zafi zuwa resin epoxy, za a iya inganta haɓakar zafin jiki da ƙarfi yadda ya kamata.
