The microstructure and phase composition of the Mo-Si alloy doped with Sc, Y or Nd were investigated. The methods of X-ray diffraction analysis (XRD), electron microscopy, and electron probe...

Viscometry methods are used to estimate the effect of iron oxidation level at the Fe³⁺/Fe_tot ratio from 0.1 to 0.8 and additions of slag-forming oxides (MgO, SiO₂, Al₂O₃, and ZnO) up to 5% on the viscosity of FeO _x -CaO melts. The iron(III) oxide content is shown to correlate with primary solidification temperature T _p.s and viscous flow activation energy E _η. The dependences of T _p.s and E _η on the melt composition are found as a result of processing the experimental data by mathematical statistics methods.