Kukonzekera 5% mpaka 10% (kachigawo kakang'ono) Al2O3 mu gawo la masanjidwewo la ng'anjo yamoto ya carbon / graphite njerwa (ma carbon blocks) kumathandizira kwambiri kukana kwa dzimbiri kwachitsulo chosungunula ndipo ndikugwiritsa ntchito njerwa za aluminiyamu muzitsulo zopangira chitsulo.Kachiwiri, njerwa za aluminiyamu za carbon zimagwiritsidwanso ntchito popangira chitsulo chosungunula komanso m'miyendo yapampopi.
Aluminium carbon njerwa zopangira chitsulo chosungunula
Njerwa za aluminium silicon carbide zimagwiritsidwa ntchito makamaka pazida zonyamulira chitsulo chosungunuka monga akasinja achitsulo.Komabe, zinthu zamtundu uwu zikagwiritsidwa ntchito m'matangi akuluakulu osungunuka achitsulo ndi zosakaniza zachitsulo, ndipo zikakumana ndi kutentha ndi kuzizira koopsa, zimakhala zosavuta kung'amba, zomwe zimapangitsa kuti zisawonongeke.Kuphatikiza apo, chifukwa njerwa za Al2O3-SiC-C zomwe zimagwiritsidwa ntchito mu akasinja akuluakulu azitsulo otentha ndi zosakaniza zachitsulo nthawi zambiri zimakhala ndi mpweya wa 15% ndi matenthedwe amtundu wa 17 ~ 21W / (m·K) (800 ℃), pamenepo. ndi kuchepetsa Kutentha kwachitsulo chosungunula ndi vuto la kusokoneza mapepala achitsulo a matanki akuluakulu osungunuka ndi magalimoto osakaniza.Njira yothanirana nayo ndikukwaniritsa kutsika kwamafuta otsika pochotsa SiC, gawo lothandizira kwambiri, ndikuchepetsa graphite ndikuyeretsa graphite.
Kupyolera mu kafukufuku wofunikira, zimatsimikiziridwa kuti:
(1) Pamene okhutira graphite (chigawo misa) mu aluminiyamu mpweya njerwa ndi zosakwana 10%, dongosolo lake bungwe tichipeza Al2O3 kupanga mosalekeza masanjidwewo, ndi mpweya wodzazidwa masanjidwewo mu mawonekedwe a nyenyezi.Panthawiyi, matenthedwe matenthedwe λ a njerwa ya aluminiyamu ya kaboni akhoza kuwerengedwa ndi chilinganizo (1)
Mu chilinganizo, λa ndi matenthedwe madutsidwe wa Al2O3;Vc ndi gawo la voliyumu ya graphite.Izi zikusonyeza kuti matenthedwe madutsidwe a aluminiyamu mpweya njerwa alibe chochita ndi matenthedwe madutsidwe graphite.
(2) Pamene graphite yoyengedwa, matenthedwe madutsidwe a aluminiyamu mpweya njerwa ali zochepa kudalira particles graphite.
(3) Kwa njerwa za carbon aluminium-carbon low-carbon, pamene graphite ikuyengedwa, matrix omangirira amatha kupangidwa, omwe angapangitse kukana kwa dzimbiri kwa njerwa za aluminiyamu-carbon.
Izi zikuwonetsa kuti njerwa za carbon A aluminiyamu ya carbon carbon zingagwirizane ndi machitidwe a matanki akuluakulu otentha azitsulo ndi magalimoto osakaniza chitsulo muzitsulo zopangira zitsulo.
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Nthawi yotumiza: Feb-27-2024
