Published in Inorganic Materials
AbstractWe have assessed the informativeness of X-ray diffraction patterns in the form of a halo, characteristic of metallic alloys prepared by liquid quenching (melt spinning) (using an Fe78P20Si2 alloy as an example) and oxide films grown on unheated substrates by ion beam sputtering of targets with an appropriate composition (LiNbO3 and Ca10(PO4...
Published in Inorganic Materials
Abstract—This paper considers approaches to the preparation of potential reagents for precipitation enhancement processes. New reagents have the form of hybrid powder materials produced via physical attachment of silver iodide crystals to colloidal silica particles. In our work, hybrid powder is thought of as a combination of an inert matrix (collo...
Published in Inorganic Materials
Abstract—This paper presents a topological analysis of phase equilibria in the Li2O–Al2O3–Ni–Co–O system. Using the fragmentary experimental data available, we construct isothermal phase diagrams of the Li2O–Al2O3–Nc–O (Nc = Ni + Co) and Li2O–Al2O3–NiO1 +x–CoO1 +x (0 ≤ x
Published in Inorganic Materials
Abstract—This paper presents results of firing of bentonite clay, refractory clay, and metakaolin materials with NaCl additions using convective and microwave heating. Phase structures of microwave-sintered aluminosilicates have been examined and the formation of a nanometer-scale aluminosilicate structure has been demonstrated. The microwave-fired...
Published in Inorganic Materials
Abstract—We have studied the influence of the glycine : nitrate (G/N) ratio and heat treatment temperature on characteristics of nanocrystalline Li4Ti5O12 powders synthesized from titanium tetrabutylate and lithium carbonate via combustion of an aqueous–organic precursor, followed by heat treatment. At the optimum reactant ratio G/N = 0.7, the cont...
Published in Inorganic Materials
Abstract—We have studied and optimized conditions for spontaneous flux growth of TbCr3(BO3)4 crystals. Phase relations in the pseudoternary system TbCr3(BO3)4–K2Mo3O10–B2O3 have been studied in the temperature range 900–1130°C and the single-phase terbium chromium borate crystallization field has been mapped out. It has been shown that increasing t...
Published in Inorganic Materials
AbstractA method for the preparation of extra-pure Na2CO3 powder has been developed. The method is based on a fractional crystallization of Na2CO3 from its saturated solutions and its conversion into sodium formate, followed by a melt crystallization. To obtain the final product Na2CO3, the recrystallized sodium formate was thermally decomposed. Th...
Published in Inorganic Materials
Abstract—We have studied chemical–mechanical and dynamic chemical polishing of the surface of single crystals of PbTe and Pb1 –xSnxTe solid solutions with bromine-releasing etchants based on aqueous (H2O2 + HBr + ethylene glycol)/glycerol solutions. The rates of chemical–mechanical and dynamic chemical polishing have been determined as functions of...
Published in Inorganic Materials
Abstract—We have worked out conditions for the preparation of microcrystalline n-type lead telluride-based materials doped with lead iodide and investigated their microstructure and thermoelectric properties. The materials were prepared by hot-pressing powders produced by grinding an ingot to a particle size on the order of hundreds of microns in a...
Published in Inorganic Materials
AbstractThe europium gallium germanate EuGaGe2O7 has been prepared by solid-state reaction in air in the temperature range 1273–1473 K using a stoichiometric mixture of Eu2O3, Ga2O3, and GeO2. Its crystal structure has been determined by X-ray diffraction (sp. gr. P21/c, a = 7.1693(7) Å, b = 6.57008(6) Å, c = 12.7699(1) Å, β = 117.4522(5)°, V = 533...
