Carbide yobiriwira ya silicon ndi carbide yakuda ya silicon: Kusiyana kwakukulu kuposa mtundu
Mu gawo lalikulu la zipangizo zamafakitale,kabide wobiriwira wa silikonindikabide wakuda wa silikoni nthawi zambiri amatchulidwa pamodzi. Zonsezi ndi zinthu zofunika kwambiri zopangidwa ndi kusungunula kwa kutentha kwambiri m'zitofu zoteteza pogwiritsa ntchito zinthu zopangira monga mchenga wa quartz ndi coke ya petroleum, koma kusiyana kwawo kuli kwakukulu kuposa kusiyana kwa mitundu pamwamba. Kuyambira kusiyana kochepa kwa zinthu zopangira, mpaka kusiyana kwa magwiridwe antchito, mpaka kusiyana kwakukulu kwa momwe zimagwiritsidwira ntchito, kusiyana kumeneku kwapanga ntchito zapadera za ziwirizi m'mafakitale.
1 Kusiyana kwa kuyera kwa zinthu zopangira ndi kapangidwe ka kristalo kumatsimikizira makhalidwe osiyanasiyana a ziwirizi.
Carbide wobiriwira wa siliconAmapangidwa ndi petroleum coke ndi mchenga wa quartz ngati zinthu zazikulu, ndipo mchere umawonjezedwa kuti utsukidwe. Kudzera mu njirayi, kuchuluka kwa zinthu zosayera kumachepetsedwa kwambiri, ndipo kristalo ndi dongosolo lokhazikika la hexagonal lokhala ndi m'mbali zakuthwa ndi ngodya. Kukonza zinthu zopangira silicon carbide yakuda n'kosavuta, ndipo palibe mchere womwe umawonjezedwa. Zonyansa monga chitsulo ndi silicon zomwe zimasiyidwa muzinthu zopangira zimapangitsa kuti tinthu ta kristalo tisakhale ndi mawonekedwe abwino komanso ozungulira komanso osawoneka bwino m'mbali ndi ngodya.
2 Kusiyana kwa zinthu zopangira ndi kapangidwe kake kumabweretsa kusiyana kwa makhalidwe a zinthu ziwirizi.
Ponena za kuuma, kuuma kwa Mohs kwakabide wobiriwira wa silikonindi pafupifupi 9.5, yachiwiri kuposa diamondi, ndipo imatha kukonza zinthu zolimba kwambiri; silicon carbide yakuda ndi pafupifupi 9.0, yokhala ndi kuuma kocheperako. Ponena za kuchuluka, silicon carbide yobiriwira ndi 3.20-3.25g/cm³, yokhala ndi kapangidwe kokhuthala; silicon carbide yakuda ndi 3.10-3.15g/cm³, yomasuka pang'ono. Ponena za magwiridwe antchito, silicon carbide yobiriwira imakhala ndi chiyero chachikulu, kutentha kwabwino, magetsi oyendetsera magetsi komanso kutentha kwambiri, koma ndi yofooka komanso yosavuta kugawanika m'mbali zatsopano; silicon carbide yakuda imakhala ndi kutentha kofooka pang'ono komanso magetsi oyendetsera magetsi, kufooka kochepa, komanso kukana kwamphamvu kwa tinthu.
3 Kusiyana kwa magwiridwe antchito kumatsimikiza cholinga cha ntchito ziwirizi.
Carbide wobiriwira wa silicon uli ndikuuma kwambirindi tinthu tating'onoting'ono tomwe timakuthwa, ndipo ndi yabwino pokonza zinthu zolimba kwambiri komanso zotsika: m'munda wopanda chitsulo, ingagwiritsidwe ntchito popera magalasi, kudula ceramic, ma wafer a silicon a semiconductor, ndi kupukuta safiro; pokonza zitsulo, ili ndi magwiridwe antchito abwino kwambiri pokonza zinthu monga carbide yolimba ndi chitsulo cholimba, ndipo imagwiritsidwa ntchito kwambiri pazinthu monga mawilo opukutira ndi ma disc odulira. Carbide wakuda wa silicon makamaka imagwiritsa ntchito zinthu zolimba kwambiri komanso zotsika kwambiri ndipo ndi yoyenera pokonza zitsulo zopanda chitsulo ndi zinthu zotsutsa monga chitsulo chosungunuka, mkuwa ndi aluminiyamu. Muzochitika zovuta monga deburring castings ndi kuchotsa dzimbiri la chitsulo, yakhala chisankho chofala m'mafakitale chifukwa cha mtengo wake wotsika.
Ngakhale kuti silicon carbide yobiriwira ndikabide wakuda wa silikoniPopeza ndi ya dongosolo la zinthu za silicon carbide, makhalidwe awo akuthupi ndi a mankhwala komanso makhalidwe awo ogwiritsira ntchito ndi osiyana kwambiri. Ndi luso lopitilira la sayansi ya zinthu ndi ukadaulo wokonza, silicon carbide yobiriwira ndi silicon carbide yakuda akuyembekezeka kukwaniritsa kufalikira kwa ntchito m'magawo apamwamba monga kupanga ma semiconductor, kupukusa molondola, ndi mphamvu zatsopano, kupereka chithandizo chofunikira cha zinthu pakukula kwapamwamba kwamakampani amakono.