1. Make-up le Thepa ea Sebopeho sa Fused Quartz
1.1 Amorphous Network le Thermal Stability
(Li-Crucible tsa Quartz)
Li-quartz crucibles ke lijana tsa mocheso o phahameng tse entsoeng ka silika e kopantsoeng, mofuta oa maiketsetso oa silicon dioxide (SiO ₂) e tsoang ho ho qhibiliha ha likristale tsa quartz tsa tlhaho maemong a mocheso a fetang 1700 °C.
Ho fapana le quartz ea kristale, silika e kopantsoeng e na le marang-rang a amorphous a mahlakore a mararo a ho arolelana sekhutlo SiO ₄ tetrahedra, e fanang ka ts'ireletso e ikhethang ea mocheso oa mocheso le ts'ireletso ea dimensional tlas'a liphetoho tse potlakileng tsa mocheso.
Moralo ona o sa sebetseng oa athomo o sireletsa khahlanong le sefuba haufi le lifofane tsa crystallographic, ho etsa hore silica e kopaneng e se be kotsing ea ho robeha ho pholletsa le libaesekele tse futhumetseng ha li bapisoa le li-porcelain tsa polycrystalline.
Sehlahisoa se bonts'a coefficient e tlase ea nts'etsopele ea mocheso (~ 0.5 × 10 ⁻⁶/ K), e 'ngoe ea tse tlase har'a lisebelisoa tsa boenjiniere, e etsang hore e mamelle matsoapo a chesang haholo ntle le ho robeha– moaho oa bohlokoa ho semiconductor le tlhahiso ea lisele tsa letsatsi.
Silika e kopaneng e boetse e boloka ho se sebetse hantle ha lik'hemik'hale khahlano le li-acid tse ngata, litšepe tse metsi, le slags, le hoja e ka ngoloa butle-butle ke hydrofluoric acid le hot phosphoric acid.
Ntho ea eona e phahameng ea ho nolofatsa (~ 1600– 1730 °C, ho ipapisitse le bohloeki le thepa ea OH) e lumella ts'ebetso e tsoelang pele ka mocheso o phahameng o hlokahalang bakeng sa nts'etsopele ea kristale le mekhoa ea ho hloekisa tšepe.
1.2 Pureness Grading le Micronutrient Control
Ho sebetsa hantle ha li-quartz crucibles ho ipapisitse le bohloeki ba lik'hemik'hale, haholo-holo tsepamiso ea lintho tse silafatsang tšepe tse kang tšepe, sodium, potasiamo, boima bo bobebe ba aluminium, le titanium.
Hape latela lipalo (likarolo ka boemo ba milione) ea litšila tsena ka fallela ka silicon e qhibilihisitsoeng nakong ntshetsopele ya kristale, ho senyeha ha meaho ea motlakase ea thepa ea semiconductor e hlahisoang.
Litšobotsi tsa bohloeki bo phahameng tse sebelisoang lisebelisoa tsa elektroniki hangata li kenyelletsa ho feta 99.95% SiO ₂, e nang le li-oxide tsa tšepe tsa alkali tse fokolang ho feta 10 ppm le litšepe tsa phetoho ka tlase 1 ppm.
Lintho tse silafatsang li tsoa ho quartz feedstock e tala kapa lisebelisoa tsa ho sebetsana 'me li fokotsoa ka khetho e hlokolosi ea mehloli ea liminerale le mekhoa ea tlhoekiso joalo ka leaching ea acid le ts'ireletso ea flotation..
Holim'a moo, hydroxyl (OH) litaba tsa webo ka silika e kopantsoeng li ama liketso tsa eona tsa thermomechanical; Mefuta e phahameng ea OH e fana ka phetiso e ntle ea UV empa e fokotsa botsitso ba mocheso, ha liphetolelo tse tlase tsa OH li ratoa bakeng sa lits'ebetso tsa mocheso o phahameng ka lebaka la ntlafatso e fokolang ea bubble.
( Li-Crucible tsa Quartz)
2. Mokhoa oa Tlhahiso le Moralo oa Microstructural
2.1 Electrofusion le Maano a ho Theha
Li-crucible tsa quartz li hlahisoa haholo ke electrofusion, ts'ebetso eo phofo ea quartz e hloekileng haholo e feptjoang ho fetoha hlobo ea graphite le hlobo ka har'a heater ea arc ea motlakase..
Arc ea motlakase e hlahisoang pakeng tsa li-electrode tsa carbon e qhibilihisa likotoana tsa quartz, e tiisang lera ka lera ho etsa ntho e hlokang moroko, foromo e teteaneng ea crucible.
Mokhoa ona o etsa hore ho be bonolo haholoanyane, homogeneous microstructure e nang le li-bubble tse fokolang le striae, bohlokoa bakeng sa potoloho e mofuthu e tsitsitseng le botsitso ba mechine.
Mekhoa e fapaneng e joalo ka fusion ea plasma le fusion ea mollo e sebelisoa bakeng sa lits'ebetso tse ikhethileng tse hlokang tšilafalo e tlase haholo kapa lintlha tsa profil ea lebota..
Ka mor'a ho lahla, likotlolo li tsamaea ka ho pholisa ho laoloang (annealing) ho felisa likhatello tsa ka hare le ho emisa ho senya ho itlelang feela nakong ea tharollo.
Ho qeta bokahodimo, e nang le ho sila le ho kganya, e netefatsa ho nepahala ha dimensional le ho theola libaka tsa nucleation bakeng sa kristale e sa batleheng nakong eohle ea ts'ebeliso.
2.2 Crystalline Layer Engineering le Opacity Control
Tšobotsi e hlalosang ea li-crucible tsa quartz tsa mehleng ena, haholo-holo tse sebelisoang ho tiisa silicon ea multicrystalline, ke moralo o entsoeng ka hare oa lera.
Ho pholletsa le tlhahiso, sebaka sa ka hare se ka hare hangata se sebetsanoa le ho phatlalatsa tsoelo-pele ea tšesaane, lera le laoloang la cristobalite– polymorph e phahameng ea mocheso oa SiO TWO– nakong ea ho futhumatsa ntlo ea pele.
Lera lena la cristobalite le sebetsa joalo ka tšitiso ea phallo, ho fokotsa tšebelisano e otlolohileng lipakeng tsa silicon e qhibilihisitsoeng le silika e kopantsoeng e ka tlase, ka hona, ho fokotsa oksijene le tšilafalo ea tšepe.
Ho feta moo, ponahalo ea mokhahlelo ona oa kristale e eketsa ho se bone, ho matlafatsa ho monya mahlaseli a kotsi le ho bapatsa ho potoloha ha mocheso le ho feta ka har'a thaw.
Baetsi ba Crucible ba tsitsisa botenya le khokahano ea lera lena ho thibela ho phatloha kapa ho petsoha ka lebaka la ho fetoha ha molumo nakong ea liphetoho tsa sethala..
3. Bokhoni bo Sebetsang Likopong tsa Mocheso o Phahameng
3.1 Mosebetsi ho Mekhoa ea Nts'etsopele ea Silicon Crystal
Li-crucible tsa quartz li bohlokoa tlhahisong ea silicon ea monocrystalline le multicrystalline, e sebetsa e le sejana sa mantlha sa silicon e qhibilihisitsoeng ho Czochralski (CZ) le litsamaiso tse tiileng tsa tataiso (DS).
Ts'ebetsong ea CZ, kristale ea peo e qoelisoa hantle ka har'a silicon e qhibilihisitsoeng e bolokiloeng ka har'a crucible ea quartz ebe e huleloa holimo butle ha e ntse e reteleha., ho lumella li-ingots tsa kristale e le 'ngoe ho nts'etsapele.
Le hoja crucible e sa bue ka ho toba le kristale e ntseng e hōla, Litšebelisano lipakeng tsa silicon e nang le metsi le mabota a SiO ₂ li tlisa ho qhibiliha ha oksijene ho qhibiliha., e ka susumetsang bophelo bohle ba mofani oa litšebeletso le matla a mochini ho li-wafers tse felileng.
Mekhoeng ea DS bakeng sa silicon ea photovoltaic-grade, li-crucibles tse kholo tsa quartz li etsa hore ho khonehe bakeng sa pholiso e laoloang ea lik'hilograma tse makholo tsa silicon e qhibilihisitsoeng ka har'a li-ingots tse bōpehileng joaloka block..
Mona, likoahelo tse kang silicon nitride (Ke tse hlano N NNE) li sebelisoa bokaholimong ba ka hare ho qoba tlamo le ho thusa ho qala ho bonolo ha silicon e tiileng ka mor'a hore e pholile.
3.2 Lisebelisoa tsa Tšenyo le Meeli ea Bophelo ba Tšebeletso
Ho sa tsotellehe boima ba bona, li-quartz crucibles li senyeha ho pholletsa le lipotoloho tse kopitsoang tsa mocheso o phahameng ka lebaka la lisebelisoa tse 'maloa tse amanang..
Phallo e teteaneng kapa ho ferekana ho etsahala nakong ea ts'oaetso ea nako e telele 1400 °C, ho baka hore lebota le fokotsehe le ho lahleheloa ke botšepehi ba geometri.
Re-crystallization ea silika e kopantsoeng hantle ka har'a cristobalite e baka khatello ea maikutlo le matšoenyeho ka lebaka la kholo ea molumo., e ka bakang ho robeha kapa ho phatlalla ho silafatsang moqomo.
Khoholeho ea lik'hemik'hale e hlaha ka lebaka la ho fokotseha ha likarabo lipakeng tsa silicon e qhibilihisitsoeng le SiO TWO: SiO MABELI + Si → 2SiO(g), ho hlahisa silicon monoxide e sa tsitsang e tlohang le ho senya bokaholimo ba lebota la crucible.
Nts'etsopele ea bubble, e tsamaisoang ke likhase tse qabelletsoeng kapa lihlopha tsa OH, hape e beha kotsing ea sebopeho sa matla le conductivity ea mocheso.
Litsela tsena tse senyehang li fokotsa mefuta e fapaneng ea lipotoloho tsa tšebeliso hape 'me li hloka taolo e nepahetseng ea ts'ebetso ho ntlafatsa nako ea bophelo le tlhahiso ea thepa..
4. Lintlafatso tse Hlahang le Liphetoho tsa Tekheniki
4.1 Liaparo le Liphetoho tsa Motsoako
Ho ntlafatsa tshebetso le bophelo bo bolelele, li-crucible tsa quartz tse tsoetseng pele li kopanya likoahelo tse sebetsang le mehaho e kopanetsoeng.
Likarolo tse khahlanong le lithupa tse thehiloeng ho silicon le likhakanyo tsa silika tse entsoeng ka lithethefatsi li matlafatsa likarolo tsa ho lokolloa le ho fokotsa ho tsoa ha oksijene nakong eohle ea ho qhibiliha..
Baetsi ba bang ba kopanya zirconia (ZrO ₂) likaroloana ka holim'a lerako la crucible ho eketsa matla a mochine le ho hanyetsa devitrification.
Patlisiso e ntse e tsoela pele ka har'a li-crucible tse pepeneneng kapa tse hlophisitsoeng hantle tse etselitsoeng ho ntlafatsa phetisetso e khanyang ea mocheso mefuteng e latelang ea sistimi ea ho futhumatsa letsatsi..
4.2 Mathata a Moshoelella le a ho Recycle
Ka ho phahamisa tlhoko ho tsoa ho indasteri ea semiconductor le photovoltaic, Tšebeliso e sa feleng ea li-crucible tsa quartz e se e le taba e tšoenyang.
Li-crucible tse sebelisitsoeng tse silafalitsoeng ka silicon deposit ho thata ho li sebelisa hape ka lebaka la likotsi tsa tšilafalo., e lebisang tlhahisong ea litšila tse ngata.
Boikitlaetso bo tsepamisitse maikutlo ho ntlafatseng masela a crucible a ka sebelisoang hape, mekhoa e matlafatsang ea ho hloekisa, le litsamaiso tse koetsoeng tsa ho etsa li-recycling ho khutlisa silika e hloekileng bakeng sa lits'ebetso tse ling.
Joalo ka ha lisebelisoa li hloka bohloeki bo phahameng ka ho fetesisa, mosebetsi oa li-quartz crucibles o tla lula o tsoela pele ka tsoelo-pele ea lihlahisoa tsa mahlale le moralo oa ts'ebetso.
Ka kakaretso, li-quartz crucibles li emela sebopeho sa bohlokoa sa basebelisi pakeng tsa lisebelisoa le lihlahisoa tsa elektronike tse sebetsang hantle.
Motsoako oa bona oa mofuta o le mong oa bohloeki, matla a mocheso, le setaele sa sebopeho se etsa hore ho thehoe mahlale a sejoale-joale a thehiloeng ho silicon a matlafatsang likhomphutha tsa sejoale-joale le lits'ebetso tsa matla a tsosolositsoeng..
5. Mofani
Advanced Ceramics e thehiloe ka Mphalane 17, 2012, ke khoebo ea theknoloji e phahameng e ikemiselitseng ho etsa lipatlisiso le nts'etsopele, tlhahiso, ho sebetsa, thekiso le lits'ebeletso tsa tekheniki tsa lisebelisoa tse amanang le ceramic joalo ka Alumina Ceramic Balls. Lihlahisoa tsa rona li kenyelletsa empa ha li felle feela ho Lihlahisoa tsa Ceramic tsa Boron Carbide, Lihlahisoa tsa Ceramic tsa Boron Nitride, Silicon Carbide Lihlahisoa tsa Ceramic, Silicon Nitride Lihlahisoa tsa Ceramic, Lihlahisoa tsa Ceramic tsa Zirconium Dioxide, etc. Haeba u thahasella, ka kopo ikutloe u lokolohile ho ikopanya le rona.([email protected])
Li-tag: likotlolo tsa quartz,crucible e kopantsoeng ea quartz,crucible ea quartz bakeng sa silicon
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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