Bikin siliki

Bikin siliki shine tubalin da aka ƙone wanda ya haɗa da mullite (3Al2O3.2SiO2) da silbon carbide (SiC) a matsayin manyan ma’adanai. Halayensa ba wai kawai babban zafin juriya na mullite ba, har ma da juriya na lalacewa, juriya na lalata, da kyakkyawan yanayin ɗumamar yanayin silin carbide. Lokacin da aka gina Baosteel a cikin shekarun 1980, kayan ƙin yarda da aka gabatar daga Nippon Karfe, waɗanda suke kama da tankokin torpedo, sun yi kama da tubalin da aka ƙera siliki na yanzu. A zahiri, kayan gyara ne na samfuran silicate na aluminium. Abubuwan asali na ladle na baƙin ƙarfe shine tubalin da ba a so. A ci gaban fasaha na masana’antar ƙarfe da ƙarfe, don hanzarta saurin ƙera ƙarfe, ana samun wani adadin Calcium oxide (CaO) wanda ake kira pretreatment. Ta wannan hanyar, kayan da ke cikin tanki dole ne su yi tsayayya da ƙarancin zafin baƙin ƙarfe na ƙarfe da tsayayya da ƙaƙƙarfan lalata alkaline. A bayyane yake, babban kayan aluminium ba zai iya tsayayya da shi ba, don haka ƙara adadin silicon carbide da ya dace da kayan aluminium yana samar da sabon iri. Masana’antar ƙarfe ta kira shi tubalin da aka ƙone na silicate na aluminium haɗe da carbide silicon.

Ayyukan tubalin carbide na silicon ya fito ne daga tsarin sa. Da fari, ya zama dole a zaɓi alumina mai daraja ta musamman tare da Al2O3 sama da 80% a cikin albarkatun ƙasa. Carbide na silicon ya zama mai tsabta kuma buƙatun taurin Mohs yana kusa da 9.5. Zaɓin kamfanin na carbide silicon yana da tsauri. Irin wannan ma’adinai yana da wuya sosai. Yawancin samfuran suna amfani da SiO2 da C don haɗa SiC a babban zafin jiki a cikin wutar lantarki. Abubuwan albarkatu daban -daban za su samar da bambance -bambancen inganci. A halin yanzu, a cikin tsarin samar da SiC, SiO2 a cikin albarkatun ƙasa ya fito ne daga silica na halitta, kuma C an samo shi ne daga coke da gawayi. Coke na mai, bisa ga sakamakon binciken mu, silicon carbide wanda aka haɗa tare da coke na mai kuma SiO2 yana da manyan alamomi dangane da taurin da sa juriya, kuma ya dace don amfani azaman tubalin carbide carbide. Babban fasali na tubalin wuta da aka ƙera daga waɗannan albarkatun ƙasa sune mullite, carbide silicon da corundum. Waɗannan ma’adanai suna da babban taurin kai, wanda ke kafa tushe don samfura masu ƙyalli da ƙarfi.