Ulusi wa Ceramic ndi chinthu chachikhalidwe chotetezera kutentha chomwe chimagwiritsidwa ntchito kwambiri m'mafakitale monga zitsulo, makina, zamagetsi, zoumba, magalasi, mankhwala, magalimoto, zomangamanga, makampani opepuka, zomangamanga zankhondo, ndi ndege. Kutengera kapangidwe ndi kapangidwe kake, ulusi wa ceramic ukhoza kugawidwa m'magulu akuluakulu: ulusi wagalasi (wosasinthika) ndi ulusi wa polycrystalline (wofiira).
1. Njira yopangira ulusi wa galasi.
Njira yopangira ulusi wagalasi wa ceramic imaphatikizapo kusungunula zinthu zopangira mu ng'anjo yolimbana ndi magetsi. Zinthu zosungunuka kutentha kwambiri zimatuluka kudzera mu chotulutsira kupita ku ng'oma yozungulira yothamanga kwambiri ya multi-roller centrifuge. Mphamvu ya centrifugal ya ng'oma yozungulira imapangitsa zinthu zosungunuka kutentha kwambiri kukhala zinthu zooneka ngati ulusi. Zinthu zosungunuka kutentha kwambiri zimatha kupangidwanso kukhala zinthu zooneka ngati ulusi pozipukutira ndi mpweya wothamanga kwambiri.
2 Njira yopangira ulusi wa polycrystalline
Pali njira ziwiri zopangira polycrystallineulusi wa ceramic: njira ya colloid ndi njira yoyambirira.
Njira ya Colloidal: kupanga mchere wa aluminiyamu wosungunuka, mchere wa silicon, ndi zina zotero kukhala yankho la colloidal lokhala ndi kukhuthala kwina, ndipo mtsinje wa yankho umapangidwa kukhala ulusi powuzidwa ndi mpweya wopanikizika kapena kuzunguliridwa ndi diski ya centrifugal, kenako nkusinthidwa kukhala ulusi wa aluminiyamu-silicon oxide crystals kudzera mu kutentha kwambiri.
Njira yokonzekera: Pangani mchere wosungunuka wa aluminiyamu ndi mchere wa silicon kukhala yankho la colloidal lokhala ndi kukhuthala kwina, kuyamwa yankho la colloidal mofanana ndi precursor (ulusi wachilengedwe wokulirapo), kenako chita chithandizo cha kutentha kuti chisanduke ulusi wa kristalo wa aluminiyamu-silicon oxide.
Nthawi yotumizira: Ogasiti-07-2023
