Ukadaulo wa silicon carbide ceramic ndikugwiritsa ntchito kwake m'munda wa photovoltaic

I. Silicon carbide kapangidwe ndi katundu

Silicon carbide SiC ili ndi silicon ndi kaboni. Ndiwokhazikika pagulu la polymorphic, makamaka kuphatikiza α-SiC (mtundu wokhazikika wa kutentha) ndi β-SiC (mtundu wokhazikika wotsika). Pali ma polymorphs oposa 200, omwe 3C-SiC a β-SiC ndi 2H-SiC, 4H-SiC, 6H-SiC, ndi 15R-SiC a α-SiC amaimira kwambiri.

Chithunzi cha SiC polymorph structure Pamene kutentha kuli pansi pa 1600 ℃, SiC imakhalapo mu mawonekedwe a β-SiC, yomwe imatha kupangidwa kuchokera kusakaniza kosavuta kwa silicon ndi carbon pa kutentha kwa pafupifupi 1450 ℃. Ikakhala yapamwamba kuposa 1600 ℃, β-SiC imasintha pang'onopang'ono kukhala ma polymorphs osiyanasiyana a α-SiC. 4H-SiC ndi yosavuta kupanga kuzungulira 2000 ℃; 6H ndi 15R polytypes ndi zosavuta kupanga pa kutentha pamwamba pa 2100 ℃; 6H-SiC imathanso kukhala yokhazikika pa kutentha pamwamba pa 2200 ℃, kotero ndiyofala kwambiri m'mafakitale. Silicon carbide yoyera ndi kristalo wopanda mtundu komanso wowonekera. Industrial silicon carbide ndi yopanda mtundu, yachikasu, yobiriwira, yobiriwira, yobiriwira, yabuluu yakuda ngakhale yakuda, ndipo kuchuluka kwa kuwonekera kumacheperanso. Makampani opanga ma abrasive amagawa silicon carbide m'magulu awiri malinga ndi mtundu: wakuda silicon carbide ndi green silicon carbide. Zopanda utoto mpaka zobiriwira zakuda zimatchedwa silicon carbide yobiriwira, ndipo buluu wopepuka mpaka wakuda amatchulidwa kuti silicon carbide yakuda. Zonse zakuda silicon carbide ndi green silicon carbide ndi α-SiC hexagonal makhiristo. Nthawi zambiri, zoumba za silicon carbide zimagwiritsa ntchito ufa wa silicon carbide ngati zopangira.

2. Silicon carbide ceramic kukonzekera ndondomeko

Silicon carbide ceramic zinthu amapangidwa ndi kuphwanya, akupera ndi grading silicon carbide zopangira kupeza SiC particles ndi yunifolomu tinthu kukula kugawa, ndiyeno kukanikiza SiC particles, sintering zina ndi zosakhalitsa zomatira mu wobiriwira akusowekapo, ndiyeno sintering pa kutentha kwambiri. Komabe, chifukwa cha mawonekedwe apamwamba a mgwirizano wa Si-C zomangira (~ 88%) ndi kutsika kwapang'onopang'ono kophatikizana, vuto limodzi lalikulu pokonzekera ndizovuta za sintering densification. Njira zokonzekera zomangira zolimba kwambiri za silicon carbide ceramics zimaphatikizirapo sintering, sintering osapunthwa, kuthamanga kwa mumlengalenga, kutentha kwapang'onopang'ono, sintering, recrystallization sintering, kutentha kwa isostatic pressing sintering, spark plasma sintering, etc.

Komabe, zoumba za silicon carbide zimakhala ndi vuto la kulimba kwapang'onopang'ono, ndiko kuti, kulimba kwambiri. Pachifukwachi, m'zaka zaposachedwa, zoumba multiphase zochokera pakachitsulo carbide zadothi, monga CHIKWANGWANI (kapena ndevu) kulimbikitsa, heterogeneous tinthu kubalalitsidwa kulimbitsa ndi gradient zinchito zipangizo aonekera mmodzi ndi mzake, kuwongolera toughness ndi mphamvu ya zipangizo monomer.

3. Kugwiritsa ntchito zitsulo za silicon carbide m'munda wa photovoltaic

Zoumba za silicon carbide zimakhala ndi kukana kwambiri kwa dzimbiri, zimatha kukana kukokoloka kwa zinthu, kukulitsa moyo wautumiki, ndipo sizitulutsa mankhwala owopsa, omwe amakwaniritsa zofunikira zoteteza chilengedwe. Panthawi imodzimodziyo, zothandizira za silicon carbide boat zimakhalanso ndi ubwino wamtengo wapatali. Ngakhale mtengo wa zida za silicon carbide ndizokwera kwambiri, kukhazikika kwawo komanso kukhazikika kwawo kumatha kuchepetsa ndalama zogwirira ntchito komanso kubweza pafupipafupi. M'kupita kwanthawi, ali ndi phindu lapamwamba lazachuma ndipo akhala malonda akuluakulu mumsika wothandizira boti la photovoltaic.

Pamene silicon carbide zadothi ntchito ngati zofunika chonyamulira zipangizo popanga ma cell photovoltaic, zogwiriziza bwato, mabokosi boti, zovekera chitoliro ndi zinthu zina zopangidwa ndi zabwino matenthedwe bata, si opunduka pa kutentha kwambiri, ndipo alibe zowononga mpweya mpweya. Atha kulowa m'malo othandizira mabwato a quartz omwe amagwiritsidwa ntchito kwambiri, mabokosi a mabwato, ndi zopangira mapaipi, ndipo amakhala ndi zabwino zambiri pamtengo. Zothandizira mabwato a silicon carbide zimapangidwa ndi silicon carbide monga chinthu chachikulu. Poyerekeza ndi zothandizira zamabwato amtundu wa quartz, zothandizira mabwato a silicon carbide zimakhala ndi kukhazikika kwamafuta ndipo zimatha kukhazikika m'malo otentha kwambiri. Boti la silicon carbide limathandizira bwino m'malo otentha kwambiri ndipo silikhudzidwa mosavuta ndi kutentha ndi kupunduka kapena kuwonongeka. Iwo ndi oyenerera njira zopangira zomwe zimafuna chithandizo cha kutentha kwambiri, chomwe chimapangitsa kuti pakhale bata ndi kugwirizana kwa kupanga.

Moyo wautumiki: Malinga ndi kusanthula kwa lipoti la data: Moyo wautumiki wa silicon carbide ceramics ndi wopitilira 3 kuposa zothandizira mabwato, mabokosi a mabwato, ndi zoyikira mapaipi opangidwa ndi zida za quartz, zomwe zimachepetsa kwambiri kuchuluka kwa zinthu zomwe zimagwiritsidwa ntchito m'malo.