Ifu ya silicon ni umusaruro ukomoka kuri silicon na ferrosilicon by'icyuma gishongesha. Ni ubwoko bw'ifu ireremba ku itanura mu gihe cyo gushongesha silicon. Ingano yayo iri hagati ya 45% na 70%, naho izindi ni C,S,P,Al,Fe,Ca. Ihendutse cyane kurusha icyuma cya silicon gisukuye. Aho gukoresha ferrosilicon mu gukora ibyuma, bishobora kugabanya ikiguzi.
