Microwave Sintering of Fe-MgO Composite

摘要

A functional metal-ceramic composite based on pure iron with magnesia secondary phase wasprepared by microwave sintering. Fe powder and 13.85 wt. % of MgO nano-powder werehomogenized by resonant acoustic mixing. The mixture was cold pressed and sintering was carriedout using a single mode microwave sintering device. The influence of sintering conditions onmicrostructure and properties of the composite was investigated. Structure, mechanical andelectromagnetic properties depend on time-temperature profile of the sintering process. Kinetics of Fe-MgO microwave sintering in air atmosphere was studied. Reproducibility of microwave sinteringprocess was evaluated also. Structural analysis was focused on development of microstructure andtransformation of MgO nano-particles induced by microwave sintering.