Alumina Ceramic Substrates: Lisebelisoa tsa Motheo tsa Phatlalatso ea Elektronike e Phahameng ka ho Fetisisa le Khokahano ea Microsystem ho Theknoloji ea Sejoale-joale alumina al2o3

1. Lintho tsa Motheo le Litšobotsi tsa Mehaho ea Alumina Ceramics

1.1 Crystallographic le Compositional Motheo oa α-Alumina

(Alumina Ceramic Substrates)

Alumina ceramic substratums, mostly made up of light weight aluminum oxide (Al ₂ O ₃), act as the backbone of modern electronic product packaging because of their phenomenal equilibrium of electrical insulation, botsitso ba mocheso, matla a mochini, le manufacturability.

The most thermodynamically steady phase of alumina at heats is corundum, or α-Al Two O TWO, which crystallizes in a hexagonal close-packed oxygen latticework with aluminum ions occupying two-thirds of the octahedral interstitial websites.

This thick atomic plan imparts high hardness (Mohs 9), superb wear resistance, and solid chemical inertness, making α-alumina appropriate for rough operating environments.

Commercial substratums usually contain 90– 99.8% Al ₂ O MANE, with minor additions of silica (SiO MABELI), magnesia (MgO), kapa li-oxide tsa lefatše tse sa tloaelehang tse sebelisoang e le lithuso tsa sintering ho bapatsa le ho laola kholo ea lijo-thollo nakong ea ho sebetsana le mocheso o phahameng..

Litšobotsi tsa bohloeki bo boholoanyane (mohlala, 99.5% le ho feta) bonts'a matla a matla a ho hanyetsa motlakase le ho tsamaisa mocheso, ha a ntse a le tlase bohloeki mefuta e fapaneng (90– 96%) fana ka litharollo tse theko e tlaase bakeng sa likopo tse sa batleng letho.

1.2 Microstructure le Defect Design bakeng sa Tšepahalang ea Elektronike

Ho sebetsa hantle ha li-alumina substrates litsamaisong tsa dijithale ho ipapisitse le tumellano ea microstructural le phokotso ea litaba.

Chelete, sebopeho sa lijo-thollo equiaxed– hangata ho tloha ho 1 ho 10 li-micrometer– e etsa hore ho be le botsitso bo itseng ba mochini le ho theola monyetla oa ho ikatisa ha crack tlas'a matšoenyeho a mocheso kapa a mochini.

Porosity, haholo-holo masoba a hokahaneng kapa a bokahodimo, e tlameha ho fokotsoa kaha e theola boima ba mochini le ts'ebetso ea dielectric.

Mekhoa e tsoetseng pele ea ts'ebetso e kang ho hasanya theipi, ho hatella ka isostatic, and regulated sintering in air or managed environments enable the production of substrates with near-theoretical thickness (> 99.5%) and surface area roughness below 0.5 µm, crucial for thin-film metallization and cable bonding.

Ho phaella moo, impurity segregation at grain borders can result in leak currents or electrochemical migration under prejudice, requiring rigorous control over raw material purity and sintering problems to make certain long-lasting integrity in moist or high-voltage environments.

2. Production Processes and Substratum Construction Technologies

( Alumina Ceramic Substrates)

2.1 Tape Spreading and Eco-friendly Body Processing

The manufacturing of alumina ceramic substrates begins with the prep work of an extremely dispersed slurry containing submicron Al ₂ O three powder, organic binders, plasticizers, ba qhalanyang, le solvents.

This slurry is processed by means of tape spreading– mokhoa o tsoelang pele moo ho emisoa ho phahamisitsoeng filimi e tsamaisang e sebelisang lehare le nepahetseng la bongaka ho fihlela botenya bo lekanang., hangata lipakeng tsa 0.1 mm le 1.0 mm.

Ka mor'a ho qhibiliha ha solvent, sephetho “theipi e loketseng tikoloho” e tenyetseha ebile e khona ho otloa, phunya, kapa sehiloeng ka laser ho theha liphatlalatso bakeng sa likhokahano tse otlolohileng.

Likarolo tse ngata li ka etsoa laminated ho hlahisa li-substrates tsa multilayer bakeng sa assimilation e rarahaneng ea potoloho, leha boholo ba lits'ebetso tsa khoebo li sebelisa litlhophiso tsa lera le le leng ka lebaka la ho u khutlisetsa morao le mehopolo ea ntlafatso ea mocheso..

Litheipi tse lumellanang hantle le tikoloho li tla koaloa ka hloko ho felisa li-additives tse nang le karohano e laoloang ea mocheso pele e qeta ho sinter..

2.2 Sintering le Metallization bakeng sa Motsoako oa Potoloho

Sintering e etsoa moeeng ka mocheso pakeng tsa 1550 ° C le 1650 °C, moo ho pharalla ha boemo bo tiileng ho tsamaisang ho felisoa ha pore le ho hoholeha ha lijo-thollo ho fihlela tšubuhlellano e felletseng.

Ho honyela ka ho otloloha nakong eohle ea sintering– hangata 15– 20%– e hloka ho bolelloa esale pele ka nepo le ho etsoa ka mokhoa oa litheipi tse lumellanang le tikoloho ho etsa bonnete bo itseng ba karolo ea ho qetela..

Ho iphapanyetsa ho sintering, metallization e behoa holim'a mesaletsa ea conductive, mapheo, le vias.

2 mekhoa ea bohlokoa e laola: ho hatisa difilimi tse teteaneng le ho beha difilimi tse tshesane.

Ka boiqapelo ba lifilimi tse teteaneng, makumane a nang le phofo ea tšepe (mohlala, tungsten, molybdenum, kapa li-alloys tsa silevera-palladium) li hatisitsoe skrineng holim'a substratum 'me li kopantsoe ka mokhoa o fokotsang sebaka sa ho ba le nako e telele, li-conductor tse phahameng tse khomarelang.

Bakeng sa lisebelisoa tse phahameng kapa tse phahameng-frequency, Mekhoa ea lifilimi tse tšesaane joalo ka ho sputtering kapa dissipation li sebelisoa ho theola likarolo tsa bonto ea tefo. (mohlala, titanium kapa chromium) complied with by copper or gold, enabling sub-micron pattern by means of photolithography.

Li-Vias li tletse li-pastes tse tsamaisang 'me li thunngoa ho nts'etsapele likhokahano tsa motlakase lipakeng tsa mekhahlelo ka mefuta e mengata..

3. Litšobotsi tsa Ts'ebetso le Melemo ea Bokhoni ho Thepa ea Elektronike

3.1 Litloaelo tsa Mocheso le Motlakase Tlas'a Ts'ebetso ea Ts'ebetso

Li-substrates tsa Alumina li nkoa e le tsa bohlokoa bakeng sa motsoako oa tsona o molemo oa conductivity e itekanetseng ea mocheso (20– 35 W/m · K bakeng sa 96– 99.8% Al ₂ O BORARO), e etsang hore ho khonehe ho senya mocheso o ka tšeptjoang ho tloha lisebelisoa tsa matla, le palo e phahameng ea resistivity (> 10 ¹⁴ Ω · lisentimitara), ho etsa bonnete ba hore ho dutla hanyane.

Dielectric tsa bona kamehla (εᵣ ≈ 9– 10 ho 1 MHz) e sireletsehile ho feta mocheso o pharaletseng le mefuta e sa tšoaneng ea kamehla, ho li etsa hore li tšoanelehe bakeng sa li-circuits tsa maqhubu a holimo ho fihla ho li-ghz tse ngata, leha lisebelisoa tse tlase-κ joalo ka aluminium nitride e bobebe li khethoa bakeng sa lits'ebetso tsa mm-wave.

Coefficient ea ntlafatso ea mocheso (CTE) ea alumina (~ 6.8– 7.2 ppm/K) e tšoana hantle le ea silicon (~ 3 ppm/K) le li-alloys tse itseng tsa ho paka, ho theola tsitsipano ea thermo-mechanical nakong ea ts'ebetso ea lisebelisoa le libaesekele tse futhumatsang.

Leha ho le joalo, ho se lumellane ha CTE le silicon ho lula e le bothata ho flip-chip le li-setups tse otlolohileng tsa die-attach, hangata e bitsa li-interposer tse lumellanang kapa lihlahisoa tse sa tlalang ho fokotsa mokhathala.

3.2 Katleho ea Mechini le Tšireletseho ea Tikoloho

Ka mochine, li-alumina substratums li bonts'a matla a holimo a feto-fetohang (300– 400 MPa) le e babatsehang dimensional botsitso tlas'a lotho, ho lumella tšebeliso ea bona ho lisebelisoa tsa elektroniki tse ruggedized bakeng sa sefofane, koloi, le mekhoa ea ho laola khoebo.

Ha ba na ho sisinyeha, tshoso, le ho kena ka mocheso o phahameng, ho boloka botsitso ba sebopeho joalo ka 1500 ° C maemong a sa tsitsang.

Sebakeng se mongobo, alumina ea boleng bo holimo e senola ho monyela ho fokolang ha metsi le khanyetso e ikhethang ea motsamao oa ion, ho etsa botshepehi bo itseng ba nako e telele dikopong tse kantle le tse mongobo o phahameng.

Ho tiea ha holim'a metsi ka mokhoa o tšoanang ho sireletsa khahlanong le tšenyo ea mochini nakong ea ho sebetsana le ho kopanya, le hoja phekolo e lokela ho nkoa ho thibela ho phunyeha ha bohale ka lebaka la brittleness ea motheo.

4. Likopo tsa Liindasteri le Tšusumetso ea Theknoloji Ho Feta Makala

4.1 Matla a Elektronike, RF modules, le Lisebelisoa tsa Likoloi

Li-substrates tsa alumina ceramic li fumaneha hohle ka li-module tsa motlakase tsa motlakase, e nang le insulated heke bipolar transistors (IGBTs), MOSFETs, le rectifiers, moo ba fanang ka ho itšehla thajana ha motlakase ha ba ntse ba khothalletsa ho fetisoa ha mocheso ho lijana tsa mocheso.

Ka maqhubu a seea-le-moea (RF) le lipotoloho tsa microwave, li sebetsa e le lits'ebetso tsa mofani oa litšebeletso bakeng sa lipotoloho tse kopaneng tse kopaneng (HICs), sebaka sa acoustic wave (BONA) sefehla, le marang-rang a phepelo ea li-antenna ka lebaka la matlo a bona a sireletsehileng a dielectric le tahlehelo e fokotsehileng.

Mmarakeng oa likoloi, li-alumina substratum li sebelisoa lisebelisoa tsa taolo ea enjene (Li-ECUs), merero ea sensor, le lori ea motlakase (EV) li-converter tsa matla, moo di mamellang mocheso, ho palama baesekele e chesang, le ho pepesetsoa ka kotloloho maro a senyang.

Ho tšepahala ha bona tlas'a mathata a matla ho etsa hore e be tsa bohlokoa bakeng sa litsamaiso tsa bohlokoa tsa polokeho tse kang anti-lock braking (MASIRI A MPA) le lits'ebetso tsa lithuso tsa bakhanni tse tsoetseng pele (ADASE).

4.2 Lisebelisoa tsa Bongaka, Sepakapaka, le Arising Micro-Electro-Mechanical Solutions

Ho feta bareki le lisebelisoa tsa elektroniki tsa indasteri, li-alumina substratums li sebelisoa lisebelisoa tsa bongaka tse kenyellelitsoeng tse kang li-pacemaker le li-neurostimulators., moo ho tiisa hermetic le biocompatibility li bohlokoa.

Sebakeng sa sefofane le ts'ireletso, li sebelisoa ka avionics, tsamaiso ea radar, le satellite interaction modules ka lebaka la ho hanyetsa mahlaseli a bona le botsitso libakeng tsa vacuum cleaner.

Ho feta moo, alumina e ntse e sebelisoa haholo e le sistimi ea meralo le ts'ireletso lits'ebetsong tse nyane tsa motlakase (MEMS), e nang le li-sensor tsa khatello, li-accelerometers, le lisebelisoa tsa microfluidic, moo inertness ea eona ea lik'hemik'hale le ho lumellana le ho tšoara filimi e tšesaane ho leng molemo.

Ha litsamaiso tsa dijithale li sala li hloka botenya bo boholo ba matla, miniaturization, le botshepehi tlasa maemo a boima, alumina ceramic substratums e ntse e tsoela pele ho ba sehlahisoa sa bohlokoa, ho hokahanya sebaka pakeng tsa bokgabane, litšenyehelo, le ho etsa lintho ka mokhoa o mocha oa ho paka lihlahisoa tsa dijithale.

5. Mofani

Alumina Technology Co., Ltd e shebane le lipatlisiso le nts'etsopele, tlhahiso le thekiso ea phofo ea aluminium oxide, lihlahisoa tsa aluminium oxide, aluminium oxide crucible, etc., ho sebeletsa lisebelisoa tsa elektroniki, li-ceramics, liindasteri tsa lik'hemik'hale le tse ling. Ho tloha ha e thehoa ka 2005, k'hamphani e ikemiselitse ho fa bareki lihlahisoa le litšebeletso tse ntle ka ho fetisisa. Haeba u batla boleng bo phahameng aluminium al2o3, ka kopo ikutloe u lokolohile ho ikopanya le rona. ([email protected])
Li-tag: Alumina Ceramic Substrates, Alumina Ceramics, aluminium

Lingoliloeng tsohle le litšoantšo li tsoa Marang-rang. Haeba ho na le litaba tsa copyright, ka kopo ikopanye le rona ka nako ho hlakola.

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