Studies of X-ray amorphous phase in mechanochemical synthesis of iron silicides from elements

Iron disilicide synthesis was developed by means of mechanochemical activat ion under intensive mechanical treatment. The X-ray amorphous phases formed during mechanical treatment of initial iron and silicon were investigated. The methods of the differential dissolution, differential thermal analysis and X-ray phase analysis were used. The formation of supersaturated amorph ous solid solution of silicon in iron with limited concentration 17 at.% Si takes place during the initial period of activation. Primary phase obtaine d in this system is iron monosilicide formed in the decomposition of amorph ous supersaturated solution. (C) 2000 Elsevier Science S.A. All rights rese rved.