Mössbauer and X-ray Diffraction Spectroscopy of High-Iron Bauxites from Kazakhstan.

The bauxite ores of Kazakhstan were analyzed using Mössbauer spectroscopy, X-ray diffraction and an X-ray fluorescence analysis. Experimental data on the structural-phase composition of bauxites were obtained, and the features of the iron-bearing minerals within them were revealed. The studied bauxites were high in iron.

Mössbauer and X-ray Studies of Radiation-Induced Processes in Nb-Zr Alloys Implanted with Fe Ions.

The effect of implanting Fe ions on the crystal structure of Nb-Zr alloys has been studied using Mössbauer spectroscopy on Fe nuclei and X-ray diffraction. As a result of implantation, a metastable structure was formed in the Nb-Zr alloy. The XRD data indicated a decrease in the crystal lattice parameter of niobium; that is, there was a compression of the niobium planes when implanted with iron ions.

Mössbauer Studies of Narrow Fractions of Fly Ash Formed after Combustion of Ekibastuz Coal.

Nuclear gamma-resonance spectroscopy on Fe nuclei, X-ray diffraction, and scanning electron microscopy have been used to study the narrow fractions of fly ash formed after combustion of the Ekibastuz coal. Two groups of samples of magnetic (ferrospheres) and non-magnetic type have been separated by granulometric and magnetic separation. A number of regularities associated with the granules size of fly ash have been established.