Structures and properties of sintered composites of metaloxide type based by iron powders formed by mechanical activation
The structural and phase transformations of systems hematitemechanocomposite Fe / Me (Me = Ti, Zr) powders occurring during mechanical activation (MA) and subsequent selfpropagating hightemperature synthesis (MA + SHS) and their influence on the formation of structures of compact materials by sintering under high temperature and pressure are given. It is shown that the hematite and metallic mechanocomposites are interacted in the MA and MA + SHS conditions as with formation of iron and of complex oxides of titanium and zirconium dioxide so with iron oxidation and formation of secondary iron oxides. Duration of MA processing of powders mixture allows to adjust the speed of the interactions between components and the phase composition of the sintered powders. Obtained compact materials are soft magnetic materials.