Ukukhiqizwa kwamandla e-solar photovoltaic sekuwumkhakha omusha wamandla othembisayo kakhulu emhlabeni. Uma kuqhathaniswa namaseli elanga e-polysilicon kanye ne-silicon amorphous, i-monocrystalline silicon, njengento yokukhiqizwa kwamandla e-photovoltaic, inamandla okuguqulwa kwe-photoelectric aphezulu kanye nezinzuzo ezivelele zezentengiselwano, futhi isibe yindawo eyinhloko yokukhiqizwa kwamandla e-solar photovoltaic. I-Czochralski (CZ) ingenye yezindlela eziyinhloko zokulungisa i-monocrystalline silicon. Ukwakheka kwesithando somlilo se-monocrystalline se-Czochralski kufaka phakathi uhlelo lwesithando somlilo, uhlelo lwe-vacuum, uhlelo lwegesi, uhlelo lwensimu yokushisa kanye nohlelo lokulawula kagesi. Uhlelo lwensimu yokushisa lungenye yezimo ezibaluleke kakhulu zokukhula kwe-monocrystalline silicon, futhi ikhwalithi ye-monocrystalline silicon ithintwa ngqo ukusatshalaliswa kwe-gradient yokushisa kwensimu yokushisa.
Izingxenye zensimu yokushisa zakhiwe kakhulu ngezinto zekhabhoni (izinto ze-graphite nezinto zekhabhoni/ikhabhoni ezihlanganisiwe), ezihlukaniswe izingxenye zokusekela, izingxenye ezisebenzayo, izinto zokushisa, izingxenye zokuvikela, izinto zokushisa, njll., ngokwemisebenzi yazo, njengoba kuboniswe kuMfanekiso 1. Njengoba usayizi we-silicon e-monocrystalline uqhubeka nokukhula, izidingo zosayizi zezingxenye zensimu yokushisa nazo ziyanda. Izinto zekhabhoni/ikhabhoni ezihlanganisiwe ziba ukukhetha kokuqala kwezinto zensimu yokushisa ze-silicon e-monocrystalline ngenxa yokuqina kwayo okulinganiselwe kanye nezakhiwo ezinhle kakhulu zemishini.
Enkambisweni ye-czochralcian monocrystalline silicon, ukuncibilika kwezinto ze-silicon kuzokhiqiza umusi we-silicon kanye ne-silicon splash encibilikisiwe, okuholela ekugugulekeni kwe-silicification kwezinto zensimu ye-carbon/carbon thermal, futhi izakhiwo zemishini kanye nempilo yesevisi yezinto zensimu ye-carbon/carbon thermal zithinteka kakhulu. Ngakho-ke, indlela yokunciphisa ukuguguleka kwe-silicification kwezinto zensimu ye-carbon/carbon thermal nokuthuthukisa impilo yazo yesevisi sekungenye yezinto ezivame ukukhathazeka ngabakhiqizi be-silicon ye-monocrystalline kanye nabakhiqizi bezinto zensimu ye-carbon/carbon thermal.Ukugqoka kwe-silicon carbideisibe yisinqumo sokuqala sokuvikela ukugqoka okuphezulu kwezinto zensimu yokushisa yekhabhoni/khabhoni ngenxa yokumelana kwayo okuhle kakhulu nokushaqeka kokushisa kanye nokumelana nokuguguleka.
Kuleli phepha, kusukela ezintweni zensimu yokushisa ye-carbon/carbon ezisetshenziswa ekukhiqizweni kwe-silicon e-monocrystalline, izindlela eziyinhloko zokulungiselela, izinzuzo kanye nokungalungi kokugqoka kwe-silicon carbide kwethulwa. Ngalesi sisekelo, ukusetshenziswa kanye nenqubekela phambili yocwaningo lokugqoka kwe-silicon carbide ezintweni zensimu yokushisa ye-carbon/carbon kuyabuyekezwa ngokuya ngezici zezinto zensimu yokushisa ye-carbon/carbon, kanye neziphakamiso kanye neziqondiso zokuthuthukiswa kokuvikelwa kokugqoka okuphezulu kwezinto zensimu yokushisa ye-carbon/carbon ziyabekwa phambili.
1 Ubuchwepheshe bokulungiselelaukugqoka kwe-silicon carbide
1.1 Indlela yokushumeka
Indlela yokushumeka ivame ukusetshenziselwa ukulungiselela uqweqwe lwangaphakathi lwe-silicon carbide ohlelweni lwezinto ezihlanganisiwe ze-C/C-sic. Le ndlela iqala ngokusebenzisa ufulawa oxubile ukugoqa izinto ezihlanganisiwe ze-carbon/carbon, bese iphatha ukushisa ekushiseni okuthile. Uchungechunge lwezimpendulo eziyinkimbinkimbi ze-physico-chemical lwenzeka phakathi kofulawa oxubile kanye nobuso besampula ukuze kwakheke uqweqwe. Inzuzo yayo ukuthi inqubo ilula, inqubo eyodwa kuphela engalungiselela izinto ezihlanganisiwe ze-matrix ezixineneyo, ezingenamabala; Ushintsho oluncane kusuka ku-preform kuya kumkhiqizo wokugcina; Ifanele noma yisiphi isakhiwo esiqiniswe yi-fiber; I-gradient ethile yokwakheka ingakhiwa phakathi koqweqwe kanye ne-substrate, ehlanganiswe kahle ne-substrate. Kodwa-ke, kunezinkinga futhi, njengokusabela kwamakhemikhali ekushiseni okuphezulu, okungalimaza i-fiber, kanye nezakhiwo zemishini ze-carbon/carbon matrix ziyehla. Ukufana koqweqwe kunzima ukulawula, ngenxa yezici ezifana namandla adonsela phansi, okwenza uqweqwe lungalingani.
1.2 Indlela yokumboza nge-slurry
Indlela yokumboza nge-slurry iwukuxuba izinto zokumboza kanye ne-binder zibe yingxube, uxube ngokulinganayo ebusweni be-matrix, ngemva kokomiswa endaweni engasebenzi kahle, isampula embozwe iyashiswa ekushiseni okuphezulu, futhi ukumboza okudingekayo kungatholakala. Izinzuzo ukuthi inqubo ilula futhi kulula ukuyisebenzisa, futhi ukujiya kokumboza kulula ukulawula; Ububi ukuthi kukhona amandla amancane okubopha phakathi kokumboza kanye ne-substrate, futhi ukumelana nokushaqeka kokushisa kokumboza kubi, futhi ukufana kokumboza kuphansi.
1.3 Indlela yokusabela komphunga wamakhemikhali
Indlela yokusabela komphunga wamakhemikhali (i-CVR) iyindlela yenqubo ekhipha izinto ze-silicon eziqinile zibe umphunga we-silicon ekushiseni okuthile, bese umphunga we-silicon usakazeka ngaphakathi nangaphandle kwe-matrix, bese usabela endaweni ene-carbon ku-matrix ukuze ukhiqize i-silicon carbide. Izinzuzo zayo zifaka phakathi umoya ofanayo esithandweni, izinga lokusabela elihambisanayo kanye nobukhulu bokufakwa kwezinto ezimboziwe yonke indawo; Inqubo ilula futhi kulula ukuyisebenzisa, futhi ubukhulu bokumboza bungalawulwa ngokushintsha ingcindezi yomphunga we-silicon, isikhathi sokufakwa kanye neminye imingcele. Okubi ukuthi isampula ithintwa kakhulu yisikhundla esithandweni, kanti ingcindezi yomphunga we-silicon esithandweni ayikwazi ukufinyelela ukufana kwethiyori, okuholela ekuqineni kokungalingani kokufakwa.
1.4 Indlela yokufaka umusi wamakhemikhali
Ukufakwa komusi wamakhemikhali (i-CVD) inqubo lapho ama-hydrocarbon asetshenziswa khona njengomthombo wegesi kanye nobumsulwa obuphezulu be-N2/Ar njengegesi yokuthwala ukuze kungeniswe amagesi axubile ku-reactor yamakhemikhali, bese ama-hydrocarbon ebola, ahlanganiswe, asakazwe, afakwe emanzini futhi axazululwe ngaphansi kokushisa okuthile kanye nengcindezi ukuze kwakheke amafilimu aqinile ebusweni bezinto ezihlanganisiwe zekhabhoni/khabhoni. Inzuzo yayo ukuthi ubuningi kanye nobumsulwa bokumbozwa kungalawulwa; Ifanele futhi umsebenzi onesimo esiyinkimbinkimbi kakhulu; Isakhiwo sekristalu kanye nesimo somphezulu womkhiqizo kungalawulwa ngokulungisa amapharamitha okufakwa. Okubi ukuthi izinga lokufakwa liphansi kakhulu, inqubo iyinkimbinkimbi, izindleko zokukhiqiza ziphezulu, futhi kungase kube neziphambeko zokumboza, njengokuqhekeka, iziphambeko ze-mesh kanye neziphambeko zomphezulu.
Ngamafuphi, indlela yokushumeka inqunyelwe ezicini zayo zobuchwepheshe, ezifanele ukuthuthukiswa nokukhiqizwa kwezinto zelebhu nezincane; Indlela yokumboza ayifaneleki ukukhiqizwa ngobuningi ngenxa yokungaguquguquki kwayo. Indlela ye-CVR ingahlangabezana nokukhiqizwa ngobuningi kwemikhiqizo emikhulu, kodwa inezidingo eziphakeme zemishini nobuchwepheshe. Indlela ye-CVD iyindlela efanelekile yokulungiselelaUkugqoka kwe-SIC, kodwa izindleko zayo ziphakeme kunendlela ye-CVR ngenxa yobunzima bayo ekulawuleni inqubo.
Isikhathi sokuthunyelwe: Feb-22-2024