Matsayin Farin Alumina Mai Haɗawa a Wajen Goge Kayan Lantarki
A wannan zamani na wayoyin komai da ruwanka, kwamfutoci, da na'urori daban-daban masu wayo, buƙatun aiki na kayan lantarki suna ƙaruwa koyaushe. Suna buƙatar su kasance masu sauri, ƙanana, kuma masu ƙarfi sosai. Wataƙila ba ku san cewa cimma waɗannan yana buƙatar wani mataki mai mahimmanci da ba shi da mahimmanci ba - gogewa. Kuma a wannan fanni, akwai "mai fasaha mai ƙarfi" wanda ya yi aiki a hankali - a hankali -farin alumina mai haɗe.
A yau, bari mu bayyana sirrin wannan "mai sana'a" kuma mu tattauna yadda yake taka muhimmiyar rawa a cikin duniyar daidaiton kayan lantarki.
I. Sanin Babban Halayya: Menene ainihin Farin Alumina da aka Haɗa?
A taƙaice dai, farin alumina da aka haɗa da farin corundum ne mai tsarkin roba. Babban sinadarinsa shine α-alumina (Al₂O₃). Za ku iya kwatanta shi da 'yan uwansa: misali, alumina mai launin ruwan kasa da aka haɗa da launin ruwan kasa ya ƙunshi ɗan ƙazanta kaɗan, don haka launinsa mai launin ruwan kasa ne; yayin da farin alumina da aka haɗa da farin, saboda kayansa masu tsabta, yana samar da fararen lu'ulu'u bayan an harba su, tare da yanayin "mai tsabta".
Ta yaya ake yin sa? A taƙaice dai, tsari ne na "sake haihuwa ta hanyar wuta." Inganci mai kyaufoda na aluminaAna narke shi, a sanyaya shi, sannan a sake mayar da shi cikin tanda mai zafi mai zafi fiye da digiri 2000 na Celsius. A ƙarshe, ana niƙa shi kuma a tace shi don samun farin abrasives na alumina masu girman barbashi daban-daban.
Kada ka raina wannan tsari; yana ba da farin alumina mai haɗe da wasu manyan halaye, wanda hakan ya sa ya zama zaɓi mafi kyau don goge abubuwan lantarki:
Taurinsa mai girma, da gaske "mai tauri": Taurin Mohs ɗinsa yana da girman 9.0, wanda ya fi na lu'u-lu'u da silicon carbide. Wannan yana nufin cewa yanke da niƙa wasu kayan abu abu ne mai sauƙi, kuma ba ya lalacewa cikin sauƙi.
Matsakaicin tauri, daidaiton tauri da sassauci: Kasancewa mai tauri kawai bai isa ba; yana da rauni sosai, kamar ɓarɓatattun gilashi, yana karyewa da ɗan taɓawa kaɗan kuma ba za a iya amfani da shi ba. Farin alumina da aka haɗa yana da tauri mai yawa da kuma kyakkyawan tauri. A ƙarƙashin matsin lamba, yana iya karyewa zuwa matsakaicin mataki, yana bayyana sabbin gefuna masu kaifi, maimakon juyawa zuwa foda - wannan ana kiransa "mai kaifin kai." Wannan kamar ƙaramin wuka ne mai sassaka mai warkar da kansa, yana ci gaba da riƙe kaifinsa.
Kyakkyawan kwanciyar hankali na sinadarai yana sa shi "natsuwa" sosai: Ana amfani da nau'ikan maganin shafawa na acidic da alkaline akai-akai a cikin aikin gogewa. Farin alumina mai hade yana da ƙarfi sosai a fannin sinadarai kuma baya amsawa cikin sauƙi tare da waɗannan hanyoyin sinadarai, yana tabbatar da cewa tsarin gogewa bai haifar da gurɓataccen sinadarai ba. Wannan yana da matuƙar muhimmanci a masana'antar lantarki, inda tsarki yake da matuƙar muhimmanci.
II. Ta yaya farin alumina da aka haɗa ke "bayyana" a cikin goge kayan lantarki?
Goge kayan lantarki ba abu ne mai sauƙi ba kamar goge wani abu mai sheƙi kawai. "Fasaha ce ta sassaka" da ake yi a duniyar ƙananan halittu, da nufin cimma saman da ya yi daidai, mai santsi, kuma mara lalacewa a matakin nanometer ko ma atomic.Farin alumina mai haɗeshine babban ƙarfin da ke cikin cimma wannan fasaha.
1. Aikin "matakin tushe" na wafers na silicon
Ana ƙera guntu-guntu ne ta hanyar amfani da wafers na silicon. Za ku iya tunanin cewa idan harsashin gini bai daidaita ba, ba za a iya gina ginin ba, kuma za a haɗa wayoyin lantarki ba tare da tsari ba. Wannan ƙa'ida ta shafi kera guntu. Ana tara layuka ɗaya a kan wani. Idan wani layi bai daidaita ba, za a rasa hankali, wanda zai haifar da gajerun da'irori ko da'irori masu buɗewa.
Nan ne fasahar CMP (Sinadarin Injin Tsaftace Muhalli) ta shigo, kuma ƙananan ƙwayoyin alumina masu launin fari galibi suna taka muhimmiyar rawa a cikin "aikin injiniya." A cikin slurry ɗin gogewa, ƙananan ƙwayoyin alumina masu launin fari marasa adadi, kamar miliyoyin ƙananan masu sana'a, suna yin ƙananan yankewa iri ɗaya akan saman silicon wafer ƙarƙashin matsin lamba da juyawa. A hankali suna niƙa saman "kololuwa," yayin da suke kiyaye kwaruruka, a ƙarshe suna cimma matsakaicin lanƙwasa. Taurin kai da halayen kai na farin alumina masu launin fari suna tabbatar da cewa wannan tsari yana da inganci da daidaito.
2. Kammala saman Na'urorin Semiconductor
A cikin guntu, ban da silicon, akwai karafa (kamar jan ƙarfe da tungsten) da ake amfani da su don layukan sarrafawa da yadudduka masu rufi (kamar silicon dioxide) don keɓewa. Waɗannan kayan daban-daban suna da tauri da saurin cirewa daban-daban. A lokacin gogewa, ana buƙatar cire ƙarfe mai yawa ba tare da lalata layin rufi na ƙasa ba; wannan ana kiransa "babban zaɓi."
Farin foda mai kauri alumina yana taka muhimmiyar rawa a nan. Ta hanyar daidaita sinadaran da ke cikin slurry mai gogewa (ɓangaren "sinadaran") da kuma yin aiki tare da farin alumina mai kauri (ɓangaren "injini"), yana yiwuwa a sami ingantaccen cire wasu kayayyaki (kamar jan ƙarfe) yayin da ba a taɓa wasu kayayyaki ba (kamar silicon dioxide). Wannan daidaiton ma'auni yana da mahimmanci don tabbatar da yawan amfanin guntu.
3. "Tauraron Kyau" na Sauran Kayan Lantarki
Baya ga guntu masu inganci, yawancin kayan lantarki da muke fuskanta kowace rana suna dogara ne akan gogewar farin alumina.
Shuke-shuken LED Sapphire: Yawancin LEDs masu haske sosai suna amfani da sapphire a matsayin tushen su. Sapphire kanta tana da tauri sosai, tana buƙatar farin alumina mai haɗe - wani abu mai "ƙarfi" - don gogewa don samun santsi mai kama da madubi, yana ƙara ingancin fitar da haske da kuma sa LED ya yi haske.
Masu Rarraba Kwalta na Quartz: Waɗannan su ne abubuwan da ke samar da siginar agogo ga da'irori. Bukatunsu na daidaiton mita suna da matuƙar girma, kuma dole ne a sarrafa ingancin saman su da kauri daidai; goge farin alumina da aka haɗa ya dace sosai don wannan aikin. Kayan maganadisu, abubuwan gilashi, da sauran kayayyaki suma suna buƙatarfarin alumina mai haɗeyayin sarrafawa don cimma kammala mai santsi da sheƙi na ƙarshe.
III. Me Yasa Alumina Mai Farin Haɗawa? - Takaitaccen Bayani Game da Fa'idodinta Na Musamman
Idan aka waiwaya baya, daga cikin abubuwan goge-goge da yawa, me yasa masana'antar lantarki ke fifita farin alumina mai haɗe?
Daidaiton da za a iya sarrafawa: Ana iya yin barbashinsa da kyau sosai kuma iri ɗaya (har zuwa matakin micrometer) tare da siffofi na yau da kullun. Wannan yana tabbatar da sakamako mai kyau da daidaito, yana hana karce saman da ba a daidaita ba sakamakon girman barbashi.
Rashin Gurɓata Sosai: Tsafta mai yawa yana nufin yana samar da ƙarancin ƙazanta na ƙarfe yayin gogewa, wanda ke biyan buƙatun tsafta na masana'antar semiconductor.
Daidaiton Inganci da Inganci: Ba shi da "tauri" da tsada kamar lu'u-lu'u, kuma ba shi da tasiri kamar goge-goge masu laushi. Yana cimma daidaito mai kyau tsakanin tauri, tauri, da farashi, wanda hakan ya sa ya zama zaɓi mai matuƙar araha.
Don haka, lokaci na gaba da ka ɗauki wayarka ka kuma ji daɗin aikinta mai santsi da kuma ayyukanta masu ƙarfi, ka yi tunanin wannan: a cikin waɗannan ƙananan guntu da kayan aiki masu laushi, wani "juyin juya halin saman" mai shiru da daidaito wanda ya ƙunshi ƙananan ƙwayoyin alumina masu launin fari da aka haɗa. Wannan "mai fasaha mai ƙarfi," tare da tauri da tsarkinsa, shine ya share shingen matakin nanometer na ƙarshe don kwararar duniyar lantarki ba tare da wani cikas ba. Ba zai taɓa tsayawa a cikin haske ba, amma gwarzo ne mai mahimmanci a bayan fage. Ci gaban fasaha sau da yawa yana ɓoye a cikin waɗannan ƙananan bayanai, yana haskakawa da mafi sauƙin haske amma mai jan hankali na kimiyyar kayan aiki.