Kev tsim hluav taws xob los ntawm lub hnub ci photovoltaic tau dhau los ua kev lag luam tshiab uas muaj kev cia siab tshaj plaws hauv ntiaj teb. Piv nrog rau polysilicon thiab amorphous silicon solar cells, monocrystalline silicon, ua cov khoom siv tsim hluav taws xob photovoltaic, muaj kev hloov pauv photoelectric siab thiab cov txiaj ntsig zoo tshaj plaws hauv kev lag luam, thiab tau dhau los ua lub hauv paus tseem ceeb ntawm kev tsim hluav taws xob los ntawm lub hnub ci photovoltaic. Czochralski (CZ) yog ib qho ntawm cov txheej txheem tseem ceeb los npaj monocrystalline silicon. Cov khoom sib xyaw ntawm Czochralski monocrystalline cub tawg suav nrog lub tshuab cua sov, lub tshuab nqus tsev, lub tshuab roj, lub tshuab thermal thiab lub tshuab tswj hluav taws xob. Lub tshuab thermal yog ib qho ntawm cov xwm txheej tseem ceeb tshaj plaws rau kev loj hlob ntawm monocrystalline silicon, thiab qhov zoo ntawm monocrystalline silicon raug cuam tshuam ncaj qha los ntawm qhov kub thiab txias gradient faib ntawm lub tshuab thermal.
Cov khoom siv thermal field feem ntau yog tsim los ntawm cov khoom siv carbon (cov khoom siv graphite thiab cov khoom siv carbon/carbon composite), uas tau muab faib ua cov khoom txhawb nqa, cov khoom ua haujlwm, cov khoom cua sov, cov khoom tiv thaiv, cov khoom siv rwb thaiv tsev thermal, thiab lwm yam, raws li lawv cov haujlwm, raws li pom hauv Daim Duab 1. Raws li qhov loj ntawm monocrystalline silicon txuas ntxiv mus, qhov loj me uas xav tau rau cov khoom siv thermal field kuj nce ntxiv. Cov khoom siv carbon/carbon composite ua thawj qhov kev xaiv rau cov khoom siv thermal field rau monocrystalline silicon vim nws qhov ruaj khov thiab cov khoom siv kho tshuab zoo heev.
Hauv cov txheej txheem ntawm czochralcian monocrystalline silicon, qhov yaj ntawm cov khoom siv silicon yuav tsim cov pa silicon thiab cov silicon molten splash, ua rau silicification erosion ntawm cov khoom siv carbon / carbon thermal teb, thiab cov khoom siv kho tshuab thiab lub neej ua haujlwm ntawm cov khoom siv carbon / carbon thermal teb raug cuam tshuam loj heev. Yog li ntawd, yuav ua li cas kom txo qhov silicification erosion ntawm cov khoom siv carbon / carbon thermal teb thiab txhim kho lawv lub neej ua haujlwm tau dhau los ua ib qho kev txhawj xeeb ntawm monocrystalline silicon manufacturers thiab carbon / carbon thermal teb cov khoom siv manufacturers.Txheej silicon carbidetau dhau los ua thawj qhov kev xaiv rau kev tiv thaiv txheej txheem ntawm cov khoom siv carbon / carbon thermal vim nws zoo heev thermal shock tiv taus thiab hnav tsis kam.
Hauv tsab ntawv no, pib los ntawm cov ntaub ntawv carbon/carbon thermal field siv rau hauv monocrystalline silicon ntau lawm, cov txheej txheem npaj tseem ceeb, qhov zoo thiab qhov tsis zoo ntawm silicon carbide txheej tau qhia. Ntawm lub hauv paus no, daim ntawv thov thiab kev tshawb fawb ntawm silicon carbide txheej hauv cov ntaub ntawv carbon/carbon thermal field raug tshuaj xyuas raws li cov yam ntxwv ntawm cov ntaub ntawv carbon/carbon thermal field, thiab cov lus qhia thiab cov lus qhia kev txhim kho rau kev tiv thaiv txheej txheem saum npoo ntawm cov ntaub ntawv carbon/carbon thermal field tau muab tso rau pem hauv ntej.
1 Kev npaj thev naus laus zis ntawmsilicon carbide txheej
1.1 Txoj kev muab tso rau hauv
Txoj kev embedding feem ntau yog siv los npaj cov txheej sab hauv ntawm silicon carbide hauv C/C-sic composite khoom system. Txoj kev no siv cov hmoov sib xyaw ua ntej los qhwv cov khoom siv carbon/carbon composite, thiab tom qab ntawd ua cov kev kho cua sov ntawm qee qhov kub. Muaj ntau yam kev sib xyaw ua ke ntawm cov hmoov sib xyaw thiab qhov chaw ntawm cov qauv los tsim cov txheej. Nws qhov zoo yog tias cov txheej txheem yooj yim, tsuas yog ib qho txheej txheem tuaj yeem npaj cov khoom sib xyaw matrix uas ntom ntom, tsis muaj tawg; Kev hloov me me ntawm preform mus rau cov khoom kawg; Haum rau txhua yam qauv fiber reinforced; Ib qho kev sib xyaw ua ke tuaj yeem tsim ntawm cov txheej thiab cov substrate, uas tau sib xyaw zoo nrog cov substrate. Txawm li cas los xij, kuj tseem muaj qhov tsis zoo, xws li cov tshuaj tiv thaiv ntawm qhov kub siab, uas tuaj yeem ua rau cov fiber puas tsuaj, thiab cov khoom siv kho tshuab ntawm carbon/carbon matrix poob qis. Qhov sib xws ntawm cov txheej nyuaj rau tswj, vim muaj cov yam xws li lub ntiajteb txawj nqus, uas ua rau cov txheej tsis sib xws.
1.2 Txoj kev txheej slurry
Txoj kev txheej slurry yog sib tov cov khoom siv txheej thiab cov binder rau hauv ib qho sib tov, txhuam kom sib npaug ntawm qhov chaw ntawm lub matrix, tom qab ziab hauv huab cua inert, cov qauv txheej yog sintered ntawm qhov kub siab, thiab cov txheej xav tau tuaj yeem tau txais. Qhov zoo yog tias cov txheej txheem yooj yim thiab yooj yim rau kev khiav lag luam, thiab cov txheej tuab yog yooj yim los tswj; Qhov tsis zoo yog tias muaj lub zog sib txuas tsis zoo ntawm cov txheej thiab cov substrate, thiab cov thermal shock tsis kam ntawm cov txheej yog pluag, thiab qhov sib xws ntawm cov txheej yog qis.
1.3 Txoj kev ua pa tshuaj lom neeg
Txoj kev tshuaj lom neeg ua pa (CVR) yog ib txoj kev ua haujlwm uas ua rau cov khoom siv silicon khov kho ua pa silicon ntawm qhov kub thiab txias, thiab tom qab ntawd cov pa silicon kis mus rau sab hauv thiab saum npoo ntawm lub matrix, thiab ua rau muaj cov pa roj carbon hauv lub matrix los tsim cov silicon carbide. Nws cov txiaj ntsig suav nrog huab cua sib xws hauv lub cub tawg, qhov nrawm ntawm kev ua tshuaj lom neeg thiab qhov tuab ntawm cov khoom siv coated txhua qhov chaw; Cov txheej txheem yooj yim thiab yooj yim rau kev ua haujlwm, thiab qhov tuab ntawm cov txheej tuaj yeem tswj tau los ntawm kev hloov pauv lub zog ntawm cov pa silicon, lub sijhawm tso tawm thiab lwm yam kev ntsuas. Qhov tsis zoo yog tias cov qauv raug cuam tshuam los ntawm qhov chaw hauv lub cub tawg, thiab lub zog ntawm cov pa silicon hauv lub cub tawg tsis tuaj yeem ncav cuag qhov sib xws theoretical, ua rau cov tuab ntawm cov txheej tsis sib xws.
1.4 Txoj kev tso pa tshuaj lom neeg
Kev tso pa tshuaj lom neeg (CVD) yog ib qho txheej txheem uas cov hydrocarbons siv ua qhov chaw roj thiab N2/Ar siab purity ua cov roj nqa khoom los qhia cov pa sib xyaw rau hauv lub tshuab ua pa tshuaj lom neeg, thiab cov hydrocarbons raug rhuav tshem, tsim, diffused, adsorbed thiab daws nyob rau hauv qee qhov kub thiab siab los tsim cov zaj duab xis khov kho ntawm qhov chaw ntawm cov khoom siv carbon/carbon. Nws qhov zoo yog tias qhov ceev thiab kev ntshiab ntawm cov txheej txheem tuaj yeem tswj tau; Nws kuj tseem haum rau cov haujlwm-piece nrog cov duab nyuaj dua; Cov qauv siv lead ua thiab cov qauv ntawm cov khoom tuaj yeem tswj tau los ntawm kev kho cov kev teeb tsa tso pa tawm. Qhov tsis zoo yog tias tus nqi tso pa tawm qis dhau, cov txheej txheem nyuaj, tus nqi tsim khoom siab, thiab tej zaum yuav muaj cov teeb meem txheej txheem, xws li cov kab nrib pleb, cov teeb meem mesh thiab cov teeb meem ntawm qhov chaw.
Hauv kev xaus, txoj kev embedding tsuas yog txwv rau nws cov yam ntxwv thev naus laus zis, uas yog qhov tsim nyog rau kev tsim kho thiab tsim cov khoom siv hauv chaw kuaj thiab cov khoom me me; Txoj kev txheej tsis haum rau kev tsim khoom ntau vim nws tsis sib xws. Txoj kev CVR tuaj yeem ua tau raws li kev tsim khoom ntau ntawm cov khoom loj, tab sis nws muaj cov kev xav tau siab dua rau cov khoom siv thiab thev naus laus zis. Txoj kev CVD yog ib txoj hauv kev zoo tshaj plaws rau kev npajSIC txheej, tab sis nws tus nqi siab dua li CVR txoj kev vim nws nyuaj rau kev tswj cov txheej txheem.
Lub sijhawm tshaj tawm: Lub Ob Hlis-22-2024