Kupanga magetsi a solar photovoltaic kwakhala makampani opanga mphamvu zatsopano padziko lonse lapansi. Poyerekeza ndi polysilicon ndi amorphous silicon solar cell, monocrystalline pakachitsulo, monga photovoltaic mphamvu m'badwo zakuthupi, ali mkulu photoelectric kutembenuka dzuwa ndi ubwino malonda malonda, ndipo wakhala waukulu wa dzuwa photovoltaic mphamvu m'badwo. Czochralski (CZ) ndi imodzi mwa njira zazikulu zokonzekera silicon ya monocrystalline. Kupangidwa kwa ng'anjo ya Czochralski monocrystalline kumaphatikizapo ng'anjo ya ng'anjo, vacuum system, gasi system, thermal field system ndi magetsi. The matenthedwe munda dongosolo ndi chimodzi mwa zinthu zofunika kwambiri pa kukula kwa monocrystalline silicon, ndipo khalidwe la silicon monocrystalline amakhudzidwa mwachindunji ndi kutentha gradient kugawa munda matenthedwe.
The matenthedwe munda zigawo makamaka wopangidwa ndi mpweya zipangizo (ma graphite zipangizo ndi carbon/carbon kompositi zipangizo), amene amagawidwa m'zigawo zothandizira, mbali zinchito, zinthu Kutentha, mbali zoteteza, zipangizo kutchinjiriza matenthedwe, etc., malinga ndi ntchito zawo, monga kuwonetsedwa mu Chithunzi 1. Pamene kukula kwa silicon monocrystalline kukukulirakulira, zofunikira za kukula kwa zigawo zotentha zamoto zikuwonjezekanso. Zida zophatikizika za kaboni / kaboni zimakhala zosankha zoyamba pazida zotenthetsera za silicon ya monocrystalline chifukwa cha kukhazikika kwake komanso mawonekedwe abwino amakina.
M'kati mwa silicon ya czochralcian monocrystalline, kusungunuka kwa zinthu za silicon kumatulutsa mpweya wa silicon ndi silicon yosungunuka, zomwe zimapangitsa kukokoloka kwa zinthu za carbon / carbon thermal field field, ndi makina ndi moyo wautumiki wa carbon / carbon thermal field materials. okhudzidwa kwambiri. Chifukwa chake, momwe angachepetsere kukokoloka kwa kaboni / mpweya wotenthetsera kumunda ndikuwongolera moyo wawo wautumiki wakhala chimodzi mwazinthu zomwe zimadetsa nkhawa kwambiri za opanga ma silicon okhala ndi kaboni / kaboni / mpweya wotentha.Chophimba cha silicon carbideChakhala chisankho choyamba pakuteteza zokutira pamwamba pa zida za carbon/carbon thermal field chifukwa cha kukana kwamphamvu kwa kutentha komanso kukana kuvala.
Papepalali, kuyambira ku carbon / carbon thermal field materials zomwe zimagwiritsidwa ntchito popanga silicon ya monocrystalline, njira zazikulu zokonzekera, ubwino ndi kuipa kwa zokutira za silicon carbide zimayambitsidwa. Pazifukwa izi, kagwiritsidwe ntchito ndi kafukufuku wa zokutira za silicon carbide mu zida za kaboni / kaboni zotenthetsera zakumunda zimawunikiridwa molingana ndi mawonekedwe a zida za kaboni / mpweya wamafuta akumunda, ndi malingaliro ndi njira zachitukuko zoteteza kupaka pamwamba kwa zida za kaboni zimayikidwa patsogolo.
1 Kukonzekera luso lazokutira za silicon carbide
1.1 Njira yosinthira
Njira yophatikizira nthawi zambiri imagwiritsidwa ntchito pokonzekera zokutira zamkati za silicon carbide mu C/C-sic composite material system. Njirayi imagwiritsa ntchito ufa wosakanizika kukulunga zinthu za carbon/carbon composite, kenako amachitira kutentha pa kutentha kwina. Mndandanda wa zovuta za physico-chemical reactions zimachitika pakati pa ufa wosakaniza ndi pamwamba pa chitsanzo kuti apange zokutira. Ubwino wake ndikuti ndondomekoyi ndi yophweka, njira imodzi yokha ingakonzekere zowuma, zopanda ming'alu zopangira matrix; Kusintha kwakung'ono kuchokera ku preform kupita ku chinthu chomaliza; Yoyenera pamtundu uliwonse wolimbitsa ulusi; Mtundu wina wopangira ukhoza kupangidwa pakati pa zokutira ndi gawo lapansi, lomwe limaphatikizidwa bwino ndi gawo lapansi. Komabe, palinso zovuta, monga momwe mankhwala amachitira pa kutentha kwakukulu, zomwe zingathe kuwononga CHIKWANGWANI, ndi makina a carbon / carbon matrix kuchepa. Kufanana kwa zokutira kumakhala kovuta kulamulira, chifukwa cha zinthu monga mphamvu yokoka, zomwe zimapangitsa kuti chophimbacho chikhale chosagwirizana.
1.2 Njira yokutira yosalala
Njira yokutira ya slurry ndikusakaniza zinthu zokutira ndikumangirira mu chisakanizo, burashi wofanana pamwamba pa matrix, mutatha kuyanika mumlengalenga, chojambula chophimbidwacho chimatenthedwa kutentha kwambiri, ndipo zokutira zofunika zimatha kupezeka. Ubwino wake ndikuti njirayi ndi yosavuta komanso yosavuta kugwiritsa ntchito, ndipo makulidwe opaka ndi osavuta kuwongolera; Choyipa chake ndikuti pali mphamvu yolumikizana yosauka pakati pa zokutira ndi gawo lapansi, ndipo kukana kwamphamvu kwamafuta kumakhala koyipa, ndipo kufananiza kwa zokutira kumakhala kochepa.
1.3 Chemical nthunzi reaction njira
Nthunzi wa mankhwala anachita(CVR) Njira ndi njira yopangira nthunzi yomwe imatulutsa zinthu zolimba za silicon kukhala nthunzi wa silicon pa kutentha kwina, ndiyeno nthunzi ya silicon imafalikira mkati ndi pamwamba pa masanjidwewo, ndikumakumana ndi kaboni mu matrix kuti apange silicon carbide. Ubwino wake ndi monga mlengalenga yunifolomu mu ng'anjo, kusinthasintha momwe zimachitikira komanso makulidwe a zinthu zokutira paliponse; Njirayi ndi yosavuta komanso yosavuta kugwiritsa ntchito, ndipo makulidwe opaka amatha kuwongoleredwa posintha kuthamanga kwa nthunzi ya silicon, nthawi yoyika ndi magawo ena. Choyipa chake ndi chakuti chitsanzocho chimakhudzidwa kwambiri ndi malo omwe ali mung'anjo, ndipo kuthamanga kwa nthunzi ya silicon mu ng'anjo sikungafikire kufanana kwachidziwitso, zomwe zimapangitsa kuti makulidwe a ❖ kuyanika osagwirizana.
1.4 Njira yoyika mpweya wa Chemical
Chemical vapor deposition (CVD) ndi njira yomwe ma hydrocarbons amagwiritsidwa ntchito ngati gwero la gasi ndi chiyero chachikulu cha N2/Ar monga mpweya wonyamulira kuti akhazikitse mpweya wosakanikirana mu makina opangira mpweya, ndipo ma hydrocarbons amawola, kupangidwa, kufalikira, kutsatiridwa ndi kuthetsedwa pansi. kutentha kwina ndi kukakamiza kupanga mafilimu olimba pamwamba pa zinthu za carbon / carbon composite. Ubwino wake ndikuti kachulukidwe ndi chiyero cha zokutira zimatha kuwongoleredwa; Ndiwoyeneranso ntchito-chidutswa chokhala ndi mawonekedwe ovuta kwambiri; Kapangidwe ka kristalo ndi mawonekedwe apamwamba azinthu zitha kuwongoleredwa posintha magawo oyika. Zoyipa zake ndikuti kuchuluka kwa ma deposition ndi otsika kwambiri, njirayo ndi yovuta, mtengo wopangira ndi wokwera, ndipo pakhoza kukhala zolakwika zokutira, monga ming'alu, zolakwika za mauna ndi zolakwika zapamtunda.
Mwachidule, njira yophatikizira imangokhala ndi mawonekedwe ake aukadaulo, omwe ndi oyenera kukulitsa ndi kupanga ma laboratory ndi zida zazing'ono; Njira yokutira siyoyenera kupanga zochuluka chifukwa chosasinthasintha. CVR njira akhoza kukumana kupanga misa zinthu zazikulu kukula, koma ali ndi zofunika apamwamba zida ndi luso. Njira ya CVD ndi njira yabwino yokonzekeraKupaka kwa SIC, koma mtengo wake ndi wapamwamba kuposa njira ya CVR chifukwa chazovuta pakuwongolera njira.
Nthawi yotumiza: Feb-22-2024