Silicon carbide (SiC) imawonetsa mavalidwe apamwamba komanso kukana kwa dzimbiri chifukwa cha mawonekedwe ake apadera akuthupi ndi mankhwala.
Pankhani ya kukana kuvala, kulimba kwa Mohs kwa silicon carbide kumatha kufika 9.5, yachiwiri kwa diamondi ndi boron nitride. Kukaniza kwake kumafanana ndi 266 kuwirikiza kwa chitsulo cha manganese ndi 1741 nthawi ya chitsulo cha chromium chapamwamba.
Pankhani ya kukana kwa dzimbiri, silicon carbide imakhala ndi kukhazikika kwamphamvu kwambiri kwamankhwala ndipo imawonetsa kukana kwambiri ku ma acid amphamvu, ma alkalis, ndi mayankho amchere. Pakadali pano, silicon carbide imakhalanso ndi kukana kwa dzimbiri ku zitsulo zosungunuka monga aluminiyamu ndi zinki, ndipo imagwiritsidwa ntchito kwambiri popanga ma crucibles ndi nkhungu mumakampani opanga zitsulo.
Pakadali pano, silicon carbide yophatikizidwa ndi kapangidwe kake kolimba kwambiri komanso kusakhazikika kwake kwamankhwala kwagwiritsidwa ntchito kwambiri m'mafakitale monga migodi, zitsulo, ndi mankhwala, kukhala chisankho chabwino kwambiri chakuthupi pansi pamikhalidwe yovuta kwambiri yogwirira ntchito.
| zakuthupi | kuvala kukana | kukana dzimbiri | ntchito kutentha kwakukulu | Economic (yanthawi yayitali) |
| Silicon carbide | Wapamwamba kwambiri | Zamphamvu kwambiri | Zabwino kwambiri (((1600 ℃) | Wapamwamba |
| Alumina ceramics | Wapamwamba | Wamphamvu | Avereji (((1200 ℃) | Wapakati |
| Chitsulo chachitsulo | Wapakati | Zofooka (zofunika zokutira) | Zofooka (zokonda kukhutitsidwa ndi okosijeni) | Zofooka |
Silicon carbide wear-resistant blockndi gulu lofunika kwambiri pazitsulo za silicon carbide.Zovala zosavala ndi zowonongeka za silicon carbide zimapangitsa kuti zigwiritsidwe ntchito kwambiri pazida zogaya monga ma crushers a mgodi ndi mphero za mpira, kuchepetsa kusinthasintha kwa zida kawirikawiri chifukwa cha kuvala ndipo motero kuchepetsa mtengo wokonza makina.
Zotsatirazi ndikuyerekeza pakati pa midadada ya silicon carbide kuvala ndi midadada ina yachikhalidwe yosamva kuvala:
| Kuuma ndi Kuvala Kukaniza | Silicon carbide wear-resistant block | Zida zachikhalidwe |
| Kuuma ndi Kuvala Kukaniza | Kuuma kwa Mohs 9.5, kukana kolimba kwambiri (moyo ukuwonjezeka ndi nthawi 5-10) | Chitsulo chachikulu cha chromium chimakhala ndi kuuma kochepa (HRC 60 ~ 65), ndipo zoumba za alumina zimatha kusweka. |
| Kukana dzimbiri | Kugonjetsedwa ndi ma asidi amphamvu ndi alkalis | Zitsulo zimakhala ndi dzimbiri, pomwe aluminiyamu imakhala ndi kukana kwa asidi |
| Kukhazikika kwa kutentha kwakukulu | Kutentha kukana 1600 ℃, sanali oxidizing pa kutentha kwambiri | Chitsulo chimakonda mapindikidwe pa kutentha kwambiri, pamene aluminiyamu imakhala ndi kutentha kwa 1200 ℃ yokha. |
| Thermal conductivity | 120 W/m · K, kutentha kwachangu, kukana kutentha kwamphamvu | Chitsulo chimakhala ndi matenthedwe abwino koma chimakhala ndi okosijeni, pomwe zoumba zadothi wamba zimakhala ndi matenthedwe abwino. |
| Zachuma | Kutalika kwa moyo wautali komanso kutsika mtengo wonse | Zitsulo zimafunikira kusinthidwa pafupipafupi, zoumba za ceramic ndi zosalimba, ndipo mtengo wanthawi yayitali ndi wokwera |
Nthawi yotumiza: Mar-18-2025