Rare-Earth Metals H2

 Associate Professor, Dr. Sergey B. Rybalka actively engaged phase transformations kinetics during hydrogen treatment of the R₂Fe₁₄B (R — Nd, Pr, Dy, Er and other rare-earth metals) type hard magnetic alloys for permanent magnets (HDDR-process). He received his Diploma in Physics (Physics of Nonequilibrium Processes) in DonSU. His PhD Thesis "Kinetics of the hydrogen-induced phase transformations in Nd₂Fe₁₄B type hard magnetic alloys" in Metal Physics field at "Institute of Physics and Technology"  has been involved the investigation of kinetics of the  Hydrogen-induced Diffusive Phase Transformations (HIDP) in R₂Fe₁₄B type hard magnetic alloys which are the base of the above-mentioned HDDR–process. Current research fields are SiC type power diodes and transistors, phase transformation kinetics in RE-TM (RE—Rare Earth and TM—Transition Metals) type hard magnetic alloys such as Nd₂Fe₁₄B, Sm₂Fe₁₇, Y₂Fe₁₇ etc., HDDR-process, magnetic alloys, intermetallics, phase transitions, power electronics, kinetic theory of phase transformations in condensed state, magnetometrical measurement, microstructural analysis, theory diffusion in condensed state etc. At this moment he has more then 120 scientific publications which are published in following leading scientific journals such as the Philosophical Magazine Letters, Journal of Alloys and Compounds, The Physics of Metals and Metallography, Letters on Materials, Metal Physics and Advanced Technologies, Materials Science, Functional Materials, International Journal of Hydrogen Energy, Materials Science and Applications and others (see Publication's List) publications that are indexed in Scopus and Web of Science. The important part of his research includes effect of the parameters of the HIDP-treatment (hydrogen pressure, temperature, processing time) on microstructure features of the Nd₂Fe₁₄B, Sm₂Fe₁₇ , Y₂Fe₁₇ and others RE-TM  type alloys (including of X-ray, optical, SEM analysis), application of the kinetic theory phase transformations in condensed state to kinetics description of the HIDP-transformations in RE-TM type alloys, effect of hydrogen atoms as an  interstitial atoms on HIDP-transformations kinetics. Current research field is the power electronics based on SiC (silicon carbide) type semiconductor materials. More detailed information about publications by the Dr. Sergey B. Rybalka you can see also by following links in Russian SCIENCE INDEX or in ResearchGate Scientific Network.