Ukucoca intsimbi enyibilikisiweyo yokwenza iMetallurgy Ingxubevange eyoNgezelelweyo yengxubevange yeSilicon ialloyi yeCalcium

I-alloy yokubini eyenziwe nge-silicon kunye ne-calcium yodidi lwe-ferroalloys.Amacandelo ayo aphambili yi-silicon kunye ne-calcium, kwaye iqulethe ukungcola okufana nentsimbi, i-aluminium, i-carbon, isulfure kunye ne-phosphorus ngamanani ahlukeneyo.Kwishishini lesinyithi kunye nentsimbi, isetyenziswe njenge-calcium additive, i-deoxidizer, i-desulfurizer kunye ne-denaturant ye-non-metallic inclusions.Isetyenziswa njenge-inoculant kunye ne-denaturant kwishishini lentsimbi.Ngokwesiseko se-silicon-calcium alloy, ezinye izinto zongezwa ukwenza i-ternary okanye i-multi-element composite alloy.Ezinje ngeSi-Ca-Al;Si-Ca-Mn;I-Si-Ca-Ba, njl., isetyenziswe njenge-deoxidizer, i-desulfurizer, i-agent ye-denitrification kunye ne-alloying agent kwi-iron kunye ne-metallurgy yensimbi.

I-calcium sisinyithi somhlaba esine-alkaline enobunzima be-athomu obuyi-40.08, i-electronic structure yangaphandle ye-4S2, ingxinano (20°C) ye-1.55g/cm3, indawo yokunyibilika eyi-839±2°C, kunye neqondo lokubila lika-1484° C.Ubudlelwane phakathi koxinzelelo lomphunga we-calcium kunye nobushushu

lnpCa=25.7691-20283.9T-1-1.0216lnT

Apho i-pCa ingumphunga woxinzelelo lwe-calcium, i-Pa;T yiqondo lokushisa, i-K. Silicon kunye ne-calcium zenza iikhompawundi ezintathu, ezizezi, i-CaSi, i-Ca2Si kunye ne-CaSi2.I-CaSi (41.2% Si) izinzile kumaqondo obushushu aphezulu.I-Ca2Si (29.5%Si) yinkomponi ye-peritectic eyenziwe phakathi kwe-Ca kunye ne-CaSi kumaqondo obushushu angaphantsi kwe-910°C.I-CaSi2 (58.36%Si) yinkomponi ye-peritectic eyenziwe phakathi kwe-CaSi kunye ne-Si kumaqondo obushushu angaphantsi kwe-1020 °C.Ukubunjwa kwesigaba semveliso ye-silicon-calcium alloys malunga ne-77% ye-CaSi2, i-5% ukuya kwi-15% ye-CaSi, i-Si <20% yamahhala, kunye ne-SiC <8%.Ubuninzi be-silicon-calcium alloy equlethe i-30% ukuya kwi-33% ye-Ca kunye ne-5% ye-Fe malunga ne-2.2g / cm3, kwaye ubushushu bokunyibilika busuka kwi-980 ukuya kwi-1200 ° C.