Hnub ci photovoltaic lub zog tsim hluav taws xob tau dhau los ua lub ntiaj teb zoo tshaj plaws kev lag luam hluav taws xob tshiab. Piv nrog polysilicon thiab amorphous silicon hnub ci hlwb, monocrystalline silicon, raws li cov khoom siv hluav taws xob photovoltaic, muaj kev hloov pauv hluav taws xob siab photoelectric thiab cov khoom lag luam zoo, thiab tau dhau los ua lub ntsiab ntawm hnub ci photovoltaic zog tsim. Czochralski (CZ) yog ib txoj hauv kev tseem ceeb los npaj monocrystalline silicon. Cov muaj pes tsawg leeg ntawm Czochralski monocrystalline rauv muaj xws li lub qhov cub, lub tshuab nqus tsev, roj system, thermal teb system thiab hluav taws xob tswj system. Lub thermal teb system yog ib qho tseem ceeb tshaj plaws rau kev loj hlob ntawm monocrystalline silicon, thiab qhov zoo ntawm monocrystalline silicon yog ncaj qha cuam tshuam los ntawm qhov kub thiab txias gradient faib ntawm thermal teb.
Cov khoom siv hluav taws xob thermal feem ntau yog tsim los ntawm cov khoom siv carbon (cov ntaub ntawv graphite thiab cov khoom siv carbon / carbon sib xyaw), uas tau muab faib ua cov khoom txhawb nqa, qhov chaw ua haujlwm, cov cua sov, cov khoom tiv thaiv, cov ntaub ntawv thermal rwb thaiv tsev, thiab lwm yam. pom hauv daim duab 1. Raws li qhov loj ntawm monocrystalline silicon tseem nce ntxiv, qhov loj me ntawm cov khoom siv thermal teb kuj tseem nce ntxiv. Carbon / carbon composite cov ntaub ntawv yog thawj qhov kev xaiv rau thermal teb cov ntaub ntawv rau monocrystalline silicon vim nws qhov seem stability thiab zoo heev mechanical zog.
Nyob rau hauv cov txheej txheem ntawm czochralcian monocrystalline silicon, melting ntawm silicon cov ntaub ntawv yuav tsim silicon vapor thiab molten silicon splash, uas ua rau silicification yaig ntawm carbon / carbon thermal teb cov ntaub ntawv, thiab cov neeg kho tshuab zog thiab kev pab cuam lub neej ntawm carbon / carbon thermal teb cov ntaub ntawv. cuam tshuam loj. Yog li ntawd, yuav ua li cas txo cov silicification yaig ntawm carbon / carbon thermal teb cov ntaub ntawv thiab txhim kho lawv cov kev pab cuam lub neej tau dhau los ua ib qho kev txhawj xeeb ntawm monocrystalline silicon manufacturers thiab carbon / carbon thermal field khoom manufacturers.Silicon carbide txheejtau dhau los ua thawj qhov kev xaiv rau txheej txheej tiv thaiv cov pa roj carbon / carbon thermal teb cov ntaub ntawv vim nws cov thermal shock tsis kam thiab hnav tsis kam.
Nyob rau hauv daim ntawv no, pib los ntawm carbon / carbon thermal teb cov ntaub ntawv siv nyob rau hauv monocrystalline silicon ntau lawm, lub ntsiab kev npaj, qhov zoo thiab qhov tsis zoo ntawm silicon carbide txheej yog qhia. Rau lub hauv paus no, daim ntawv thov thiab kev tshawb fawb kev kawm ntawm silicon carbide txheej nyob rau hauv carbon / carbon thermal teb cov ntaub ntawv raug tshuaj xyuas raws li cov yam ntxwv ntawm carbon / carbon thermal teb cov ntaub ntawv, thiab cov lus qhia thiab kev loj hlob cov lus qhia rau txheej txheej tiv thaiv ntawm carbon / carbon thermal teb cov ntaub ntawv. muab tso rau pem hauv ntej.
1 Kev npaj technology ntawmsilicon carbide txheej
1.1 Embedding method
Txoj kev embedding feem ntau yog siv los npaj cov txheej txheej sab hauv ntawm silicon carbide hauv C / C-sic cov khoom siv sib xyaw. Txoj kev no ua ntej siv cov hmoov sib tov los qhwv cov khoom siv carbon / carbon sib xyaw, thiab tom qab ntawd nqa tawm kev kho cua sov ntawm qhov kub thiab txias. Ib tug series ntawm complex physico-tshuaj cov tshuaj tiv thaiv tshwm sim ntawm cov hmoov sib tov thiab cov nto ntawm cov qauv los tsim cov txheej. Nws qhov zoo dua yog cov txheej txheem yooj yim, tsuas yog ib qho txheej txheem tuaj yeem npaj cov ntaub ntawv ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom; Hloov me me los ntawm preform mus rau cov khoom kawg; Haum rau txhua tus qauv siv fiber ntau; Ib qho kev sib xyaw gradient tuaj yeem tsim los ntawm txheej txheej thiab substrate, uas zoo sib xyaw nrog cov substrate. Txawm li cas los xij, kuj tseem muaj qhov tsis zoo, xws li cov tshuaj tiv thaiv ntawm qhov kub thiab txias, uas tuaj yeem ua rau cov fiber ntau puas, thiab cov khoom siv hluav taws xob ntawm carbon / carbon matrix poob qis. Lub uniformity ntawm txheej yog nyuaj rau tswj, vim muaj tej yam xws li lub ntiajteb txawj nqus, uas ua rau lub txheej tsis sib xws.
1.2 Slurry txheej txheej txheem
Slurry txheej txheej yog sib tov cov khoom txheej thiab khi rau hauv ib qho sib tov, txhuam tusyees ntawm lub matrix, tom qab ziab hauv qhov chaw tsis zoo, cov qauv coated yog sintered ntawm qhov kub thiab txias, thiab cov txheej txheem yuav tsum tau ua. Qhov zoo yog tias cov txheej txheem yog yooj yim thiab yooj yim rau kev khiav lag luam, thiab cov txheej thickness yog yooj yim los tswj; Qhov tsis zoo yog tias muaj kev sib txuas tsis zoo ntawm cov txheej txheej thiab cov substrate, thiab cov thermal shock tsis kam ntawm txheej yog tsis zoo, thiab uniformity ntawm txheej yog tsawg.
1.3 Tshuaj vapor tshuaj tiv thaiv txoj kev
Tshuaj vapor cov tshuaj tiv thaiv (CVR) txoj kev yog txheej txheem txheej txheem uas evaporates cov khoom silicon rau hauv silicon vapor ntawm qhov kub thiab txias, thiab tom qab ntawd cov silicon vapor diffuses rau sab hauv thiab saum npoo ntawm matrix, thiab reacts nyob rau hauv situ nrog carbon nyob rau hauv lub matrix los tsim. silicon carbide. Nws qhov zoo muaj xws li cov huab cua tsis sib xws hauv lub cub tawg, cov tshuaj tiv thaiv zoo ib yam thiab cov thickness ntawm cov khoom coated nyob txhua qhov chaw; Cov txheej txheem yog yooj yim thiab yooj yim rau kev khiav lag luam, thiab cov txheej thickness tuaj yeem tswj tau los ntawm kev hloov cov silicon vapor siab, lub sij hawm deposition thiab lwm yam tsis. Qhov tsis zoo yog tias cov qauv cuam tshuam zoo heev los ntawm txoj hauj lwm hauv lub cub tawg, thiab cov silicon vapor siab nyob rau hauv lub cub tawg tsis tuaj yeem ncav cuag qhov sib txawv theoretical, uas ua rau cov txheej tsis sib xws.
1.4 Tshuaj vapor deposition method
Chemical vapor deposition (CVD) yog txheej txheem uas hydrocarbons siv los ua cov pa roj thiab siab purity N2 / Ar ua cov pa roj los qhia cov pa sib xyaw rau hauv cov tshuaj vapor reactor, thiab cov hydrocarbons decomposed, synthesized, diffused, adsorbed thiab daws nyob rau hauv Qee qhov kub thiab siab los tsim cov yeeb yaj kiab ntawm cov khoom siv carbon / carbon sib xyaw. Nws qhov zoo dua yog tias qhov ceev thiab purity ntawm cov txheej tuaj yeem tswj tau; Nws kuj tseem haum rau kev ua haujlwm-thooj nrog ntau cov duab; Cov qauv siv lead ua thiab qhov chaw morphology ntawm cov khoom tuaj yeem tswj tau los ntawm kev kho cov khoom tso tawm. Qhov tsis zoo yog qhov kev tso nyiaj tsawg dhau, cov txheej txheem yog qhov nyuaj, cov nqi tsim khoom yog siab, thiab tej zaum yuav muaj cov txheej txheem tsis xws luag, xws li cov kab nrib pleb, mesh defects thiab defects.
Hauv cov ntsiab lus, txoj kev embedding yog txwv rau nws cov yam ntxwv thev naus laus zis, uas tsim nyog rau kev txhim kho thiab tsim cov khoom siv hauv chav kuaj thiab cov khoom me me; Cov txheej txheem txheej tsis haum rau kev tsim khoom loj vim nws tsis zoo sib xws. CVR txoj kev tuaj yeem ua tau raws li cov khoom loj ntawm cov khoom loj, tab sis nws muaj kev xav tau ntau dua rau cov khoom siv thiab thev naus laus zis. CVD txoj kev yog ib txoj hauv kev zoo rau kev npajSIC txheej, tab sis nws cov nqi yog siab dua CVR txoj kev vim nws txoj kev nyuaj hauv kev tswj cov txheej txheem.
Post lub sij hawm: Feb-22-2024