Possibly the silicide Ti2Si exists as well as the disilicide TiSi2. The latter has been prepared by igniting in a crucible a mixture of 200 grams of aluminium powder, 250 grams of sulphur, 180 grams of fine sand, and 15 grams of titanic acid or 4 grams of potassium titanifluoride, the whole being covered with a layer of magnesium powder.
Titanium silicide, TiSi2, consists of small grey, tetragonal pyramids of density 4.02 and hardness 4.5 on Moh's scale; it is insoluble in mineral acids, except hydrofluoric acid, but dissolves slowly in 10 per cent, potassium hydroxide solution. |