“…The physical and chemical properties of glass-ceramics mainly depend on the composition of glass, type and amount of the crystalline phase, microstructure, the heat treatment procedure and nucleating agents [7]. Glass-ceramics are also considered as intrinsic composites because during heat treatment the reinforcing phase is nucleated from the parent glass, which, therefore, provides toughness and mechanical strength to the polycrystalline solid [8]. Previously a number of studies have been made on doped glass-ceramics with * E-mail: madeehariaz2762@yahoo.com different nucleating agents, such as TiO 2 [9,10], to obtain effective crystallization and sinterability of the glass-ceramics.…”