Ts'ebetso ea kholo ea silicon e le 'ngoe ea kristale e etsoa ka botlalo tšimong ea mocheso. Sebaka se setle sa mocheso se thusa ho ntlafatsa boleng ba kristale mme se na le ts'ebetso e phahameng ea kristale. Moqapi oa sebaka sa mocheso o khetholla haholo liphetoho le liphetoho tsa li-gradients tsa mocheso sebakeng se matla sa mocheso. Ho phalla ha khase ka kamoreng ea sebōpi le phapang ea thepa e sebelisoang tšimong ea mocheso e khethollang ka ho toba bophelo ba tšebeletso ea tšimo ea mocheso. Sebaka sa mocheso se entsoeng ka mokhoa o sa utloahaleng ha se etse feela hore ho be thata ho hōlisa likristale tse finyellang litlhoko tsa boleng, empa hape ha li khone ho hōlisa likristale tse feletseng ka tlas'a litlhoko tse itseng tsa ts'ebetso. Ke ka lebaka leo indasteri ea silicon ea Czochralski monocrystalline e nkang moralo oa masimo a mocheso e le theknoloji ea mantlha mme e tsetela matla a maholo a basebetsi le lisebelisoa tsa thepa lipatlisisong le nts'etsopele ea tšimo ea mocheso.
Thermal system e entsoe ka lisebelisoa tse fapaneng tsa tšimo ea mocheso. Re tla kenyelletsa ka bokhutšoanyane lisebelisoa tse sebelisoang tšimong ea mocheso. Ha e le kabo ea mocheso tšimong ea mocheso le phello ea eona ho hula ka kristale, re ke ke ra e hlahloba mona. Thepa e futhumatsang e bua ka sebōpi sa vacuum ea kristale. Likarolo tsa moaho le tse kentsoeng ka thermally tsa kamore, tse bohlokoa ho theha lesela le nepahetseng la mocheso ho potoloha semiconductor ho qhibiliha le likristale.
ngoe. thepa ea mohaho oa tšimo ea mocheso
Lintho tsa motheo tse tšehetsang ho holisa silicon e le 'ngoe ea kristale ka mokhoa oa Czochralski ke graphite e hloekileng haholo. Lisebelisoa tsa graphite li phetha karolo ea bohlokoa haholo indastering ea kajeno. Ha ho lokisoa silicon e le 'ngoe ea kristale ka mokhoa oa Czochralski, li ka sebelisoa e le likarolo tsa sebopeho sa tšimo ea mocheso tse kang heaters, li-tubes tse tataisang, li-crucibles, li-insulation tubes le li-trays tse crucible.
Lisebelisoa tsa graphite li khethiloe ka lebaka la boiketlo ba eona ba ho itokisa ka bongata bo boholo, ts'ebetso le thepa e phahameng ea ho hanyetsa mocheso. Carbon ka sebopeho sa taemane kapa graphite e na le ntlha e phahameng ea ho qhibiliha ho feta element kapa motsoako ofe kapa ofe. Lisebelisoa tsa graphite li matla haholo, haholo-holo mocheso o phahameng, 'me motlakase oa eona oa motlakase le oa mocheso le oona o ntle haholo. Ts'ebetso ea eona ea motlakase e etsa hore e tšoanelehe e le thepa ea ho futhumatsa, 'me e na le mocheso o khotsofatsang oa mocheso o ka khonang ho arolelana mocheso o hlahisoang ke mocheso ho crucible le likarolo tse ling tsa tšimo ea mocheso. Leha ho le joalo, ka mocheso o phahameng, haholo-holo libakeng tse telele, mokhoa o ka sehloohong oa ho fetisa mocheso ke mahlaseli.
Likarolo tsa graphite qalong li entsoe ka extrusion kapa isostatic pressing ea likaroloana tse ntle tsa carbonaceous tse kopantsoeng le binder. Likarolo tsa boleng bo holimo tsa graphite hangata li hatelloa ka isostatically. Sekhechana sohle se qala ka carbonized ebe se etsoa graphiti ka mocheso o phahameng haholo, o haufi le 3000 ° C. Likarolo tse entsoeng ho tloha monoliths tsena hangata li hloekisoa sebakeng se nang le chlorine ka mocheso o phahameng ho tlosa tšilafalo ea tšepe ho lumellana le litlhoko tsa indasteri ea semiconductor. Leha ho le joalo, esita le ka tlhoekiso e nepahetseng, litekanyetso tsa tšilafalo ea tšepe ke litaelo tsa boholo bo phahameng ho feta tse lumelloang ke lisebelisoa tsa silicon e le 'ngoe ea kristale. Ka hona, tlhokomelo e tlameha ho nkoa ka moralo oa tšimo ea mocheso ho thibela tšilafalo ea likarolo tsena ho kena ka holim'a metsi a qhibilihang kapa a kristale.
Lisebelisoa tsa graphite li kenella hanyenyane, tse lumellang tšepe e setseng ka hare ho fihla holimo habonolo. Ho feta moo, silicon monoxide e teng ka har'a khase ea ho hloekisa e potolohileng bokaholimo ba graphite e ka kenella ka botebo ka har'a lisebelisoa tse ngata mme ea arabela.
Li-heaters tsa khale tsa kristale tsa silicon li ne li entsoe ka lirafshoa tse kang tungsten le molybdenum. Ha theknoloji ea ho lokisa graphite e ntse e hola, thepa ea motlakase ea likhokahano lipakeng tsa likarolo tsa graphite e ea tsitsa, 'me licheso tse le 'ngoe tsa silicon e le 'ngoe li nkile sebaka sa tungsten le molybdenum le liheater tse ling. Lisebelisoa tsa graphite tse sebelisoang haholo hajoale ke isostatic graphite. semicera e ka fana ka lisebelisoa tsa graphite tsa boleng bo holimo tsa isostatically.
Ka Czochralski e le 'ngoe ea libono tsa silicon ea kristale, ka linako tse ling ho sebelisoa lisebelisoa tse kopantsoeng tsa C / C, 'me hona joale li sebelisoa ho etsa liboutu, linate, li-crucibles, lipoleiti tse jereng thepa le likarolo tse ling. Lisebelisoa tse entsoeng ka carbon / carbon (c/c) ke lisebelisoa tse entsoeng ka carbon fiber tse matlafalitsoeng ka carbon-based composite. Li na le matla a khethehileng a phahameng, modulus e khethehileng, coefficient e tlase ea mocheso, motlakase o motle oa motlakase, matla a maholo a fracture, matla a khoheli a tlaase, ho hanyetsa mocheso oa mocheso, ho hanyetsa kutu, E na le letoto la thepa e babatsehang e kang ho hanyetsa mocheso o phahameng 'me hona joale e atile haholo. e sebelisoang sebakeng sa lifofane, mabelo, biomaterials le masimo a mang e le mofuta o mocha oa thepa ea sebopeho e hanyetsanang le mocheso o phahameng. Hajoale, bothata bo ka sehloohong bo kopaneng le thepa e kopaneng ea C / C ea lapeng ke litaba tsa litšenyehelo le tsa indasteri.
Ho na le lisebelisoa tse ling tse ngata tse sebelisoang ho theha masimo a mocheso. Carbon fiber e matlafalitsoeng ke graphite e na le thepa e ntle ea mochini; leha ho le joalo, e theko e boima haholo mme e beha litlhoko tse ling tsa moralo. Silicon carbide (SiC) ke thepa e molemo ho feta graphite ka litsela tse ngata, empa e theko e boima haholo ebile e thata ho etsa likarolo tse kholo. Leha ho le joalo, SiC e atisa ho sebelisoa e le seaparo sa CVD ho eketsa bophelo ba likarolo tsa graphite tse pepesehileng khase e mabifi ea silicon monoxide le ho fokotsa tšilafalo e tsoang ho graphite. Seaparo se teteaneng sa CVD silicon carbide se thibela ka katleho litšila tse ka hare ho thepa ea microporous graphite ho fihla holimo.
E 'ngoe ke CVD carbon, eo hape e ka etsang lesela le teteaneng holim'a likarolo tsa graphite. Lisebelisoa tse ling tse hanyetsanang le mocheso o phahameng, tse kang molybdenum kapa lisebelisoa tsa ceramic tse lumellanang le tikoloho, li ka sebelisoa moo ho se nang kotsi ea ho silafala ha ho qhibiliha. Leha ho le joalo, li-ceramics tsa oxide li na le tokelo e fokolang ea ho kopana ka ho toba le lisebelisoa tsa graphite mocheso o phahameng, hangata li siea mekhoa e seng mekae haeba ho hlokahala. E 'ngoe ke hexagonal boron nitride (eo ka linako tse ling e bitsoang white graphite ka lebaka la thepa e tšoanang), empa e na le thepa e fokolang ea mochine. Molybdenum ka kakaretso e na le kahlolo e molemo bakeng sa lits'ebetso tsa mocheso o phahameng ka lebaka la litšenyehelo tsa eona tse itekanetseng, ho fokotseha ho fokolang ka likristale tsa silicon, le coefficient e tlaase ea karohano, e ka bang 5 × 108, e lumellang ho silafala ha molybdenum pele ho senya sebopeho sa kristale.
tse pedi. Thermal field insulation materials
Sesebediswa se sebediswang ka ho fetisisa sa ho kenya letsoho ke carbon e utlwahalang ka mefuta e fapaneng. Carbon feel e entsoe ka likhoele tse tšesaane tse sebetsang e le ho koala mocheso hobane li thibela mahlaseli a mocheso hangata sebakeng se sekhutšoanyane. Khabone e bonolo e lohuoa hore e be lilakane tse batlang li le tšesaane, ebe li sehoa ka sebopeho se lakatsehang ebe li kobeha ka thata ho fihlela sebaka se lekaneng. Pheko e phekotsoeng e entsoe ka lisebelisoa tse ts'oanang tsa faeba, ho sebelisoa sekontiri se nang le carbon ho hokahanya likhoele tse qhalakaneng hore e be ntho e tiileng le e setaele haholoanyane. Ho sebelisa mouoane oa lik'hemik'hale oa carbon sebakeng sa li-binders ho ka ntlafatsa thepa ea mochine.
Ka tloaelo, bokaholimo bo ka ntle ba insulating e folisitsoeng bo koahetsoe ka lesela le sa khaotseng la graphite kapa foil ho fokotsa khoholeho ea mobu le ho roala hammoho le tšilafalo ea likaroloana. Ho boetse ho na le mefuta e meng ea lisebelisoa tsa khabone, joalo ka carbon foam. Ka kakaretso, lisebelisoa tsa graphitized li khethoa ka ho hlaka hobane graphitization e fokotsa haholo sebaka sa fiber. Lisebelisoa tsena tsa sebaka se phahameng li lumella ho fokotseha ho hoholo 'me ho nka nako e nyane ho hulela sebōpi sebakeng se nepahetseng. Mofuta o mong ke thepa e kopantsoeng ea C / C, e nang le likarolo tse ikhethang tse kang boima bo bobebe, mamello e phahameng ea tšenyo le matla a phahameng. E sebelisoa masimong a mocheso ho nkela likarolo tsa graphite sebaka, e leng ho fokotsang haholo ho fetoha ha likarolo tsa graphite le ho ntlafatsa boleng ba kristale e le 'ngoe le botsitso ba tlhahiso.
Ho latela karohano ea lisebelisoa tse tala, moea oa khabone o ka aroloa ka polyacrylonitrile-based carbon felt, viscose-based carbon felt, le asphalt-based carbon felt.
Polyacrylonitrile-based carbon felt e na le molora o moholo, 'me monofilaments e fetoha brittle ka mor'a phekolo e phahameng ea mocheso. Nakong ea ts'ebetso, lerōle le hlahisoa habonolo ho silafatsa tikoloho ea sebōpi. Ka nako e ts'oanang, likhoele li kena habonolo li-pores tsa motho le lipampitšana tsa phefumoloho, li baka kotsi bophelong ba motho; Viscose-based carbon felt E na le thepa e ntle ea ho kenya mocheso oa mocheso, e batla e le bonolo ka mor'a phekolo ea mocheso, 'me ha e khone ho hlahisa lerōle. Leha ho le joalo, karolo ea sefapano sa likhoele tse thehiloeng ho viscose e na le sebopeho se sa tloaelehang 'me ho na le likhohlo tse ngata holim'a fiber, e leng bonolo ho e etsa ka pel'a sepakapaka sa oxidizing sebōping sa silicon se le seng sa kristale sa Czochralski. Likhase tse kang CO2 li baka pula ea oksijene le likarolo tsa khabone ka thepa e le 'ngoe ea silicon ea kristale. Bahlahisi ba ka sehloohong ba kenyelletsa SGL ea Jeremane le lik'hamphani tse ling. Hajoale, k'habone e entsoeng ka sekontiri ke eona e sebelisoang haholo indastering ea kristale e le 'ngoe ea semiconductor,' me ts'ebetso ea eona ea ho kenya mocheso oa mocheso e betere ho feta ea ho ikutloa ka khabone e khomarelang. Khabone e entsoeng ka marenene e tlase, empa k'habone e thehiloeng ho asphalt e na le bohloeki bo phahameng le ho tsoa lerōle le tlase. Baetsi ba kenyelletsa Kureha Chemical ea Japane, Osaka Gas, joalo-joalo.
Kaha sebopeho sa carbon se ikutloa se sa lokisoe, ha ho bonolo ho sebetsa. Hona joale lik'hamphani tse ngata li thehile lisebelisoa tse ncha tsa ho kenya mocheso tse thehiloeng holim'a carbon - pheko ea carbon. Khabone e phekotsoeng e boetse e bitsoa ho utloa ka thata. Ke k'habone e ikutloang e na le sebopeho se itseng le ho iphelisa ka mor'a ho kenngoa ka resin, laminated, solidified le carbonized.
Boleng ba khōlo ea silicon e le 'ngoe ea kristale e ameha ka ho toba ke tikoloho ea mocheso oa mocheso,' me lisebelisoa tsa carbon fiber insulation li phetha karolo ea bohlokoa tikolohong ena. Carbon fiber e futhumatsang mocheso o ikutloang o le bonolo o ntse o na le molemo o moholo indastering ea photovoltaic semiconductor ka lebaka la melemo ea eona ea litšenyehelo, phello e ntle ea ho futhumatsa mocheso, moralo o bonolo le sebopeho se ka khonehang. Holim'a moo, khabone fiber rigid insulation e tla ba le sebaka se seholo sa nts'etsopele 'marakeng oa thepa ea thepa ea mocheso ka lebaka la matla a eona a itseng le ts'ebetso e phahameng. Re ikemiselitse ho etsa lipatlisiso le nts'etsopele lefapheng la lisebelisoa tsa ho kenya mocheso le ho tsoela pele ho ntlafatsa ts'ebetso ea sehlahisoa ho khothaletsa katleho le nts'etsopele ea indasteri ea semiconductor ea photovoltaic.
Nako ea poso: May-15-2024