Kweza ibyuma bishongeshejwe Byuma Byuma Byuma Byuma Byongerwaho Amavuta Yumutanga Utanga Silicon Kalisiyumu Yumutungo wa Kalisiyumu Silicon

Binary alloy igizwe na silicon na calcium ni mubyiciro bya ferroalloys.Ibigize byingenzi ni silikoni na calcium, kandi irimo umwanda nka fer, aluminium, karubone, sulfure na fosifore muburyo butandukanye.Mu nganda zicyuma nicyuma, ikoreshwa nkinyongera ya calcium, deoxidizer, desulfurizer na denaturant kubintu bitarimo ibyuma.Ikoreshwa nka inoculant na denaturant munganda zicyuma.Hishimikijwe silicon-calcium ivanze, ibindi bintu byongeweho kugirango bibe ternary cyangwa ibintu byinshi bigize ibivange.Nka Si-Ca-Al;Si-Ca-Mn;Si-Ca-Ba, nibindi, bikoreshwa nka deoxidizer, desulfurizer, agent denitrification hamwe na alloying agent mubyuma nicyuma.

Kalisiyumu ni icyuma cyitwa alkaline cyisi gifite uburemere bwa atome bwa 40.08, imiterere ya elegitoroniki yo hanze ya 4S2, ubucucike (20 ° C) bwa 1.55g / cm3, gushonga kwa 839 ± 2 ° C, hamwe no guteka 1484 ° C.Isano iri hagati yumuvuduko wumwuka wa calcium nubushyuhe ni

lnpCa = 25.7691-20283.9T-1-1.0216lnT

Aho pCa numuvuduko wumwuka wa calcium, Pa;T ni ubushyuhe, K. Silicon na calcium bigize ibice bitatu, aribyo CaSi, Ca2Si na CaSi2.CaSi (41.2% Si) ihagaze neza ku bushyuhe bwinshi.Ca2Si (29.5% Si) ni uruganda rwubatswe rwakozwe hagati ya Ca na CaSi ku bushyuhe buri munsi ya 910 ° C.CaSi2 (58.36% Si) ni ikomatanyirizo ryakozwe hagati ya CaSi na Si ku bushyuhe buri munsi ya 1020 ° C.Icyiciro cyibigize silicon-calcium ivanze ninganda zingana na 77% CaSi2, 5% kugeza 15% CaSi, kubuntu Si <20%, na SiC <8%.Ubucucike bwa silicon-calcium ivanze irimo 30% kugeza 33% bya Ca naho hafi 5% ya Fe ni 2,2g / cm3, naho ubushyuhe bwo gushonga buva kuri 980 kugeza 1200 ° C.