Diferro silicide

Diferro silicide or Iron subsilicide, Fe2Si, is the form in which silicon occurs m cast iron, and may be obtained 8 in several ways namely, (1) by heating iron in a porcelain dish brasqued with silicon (2) by heating iron with 10 per cent, of silicon in an electric furnace and (3) by similarly heating ferric oxide with excess of silicon. 

Diferro silicide, as obtained by these methods, occurs as small prismatic crystals, possessed of metallic lustre, magnetic, and of density 7 00 at 22° C. Hydrogen fluoride attacks it readily, and aqua regia decomposes it, yielding silica and ferric chloride. Hot potassium hydroxide is without action on it. It is decomposed by chlorine with incandescence. 

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See also in sourсe #XX -- [ , ]

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