Published in Inorganic Materials
Abstract—A technologically feasible process has been proposed for the preparation of homogeneous single-phase magnesium–boron codoped lithium niobate growth charge. It has been used in Czochralski growth of LiNbO3:Mg,B lithium niobate single crystals with a highly uniform dopant distribution. The crystals have been shown to have optical quality. Th...
Published in Inorganic Materials
AbstractSynthesis of dimethylmethylphenylsiloxane rubbers with terminal hydroxyl groups by copolymerization of cyclosiloxanes can be accompanied by formation of low-molecular weight compounds, impurities, which are difficult to remove (because of target product affinity) and can lead to rubber opalescence. Identification of the impurities (the cont...
Published in Inorganic Materials
AbstractAqueous propylene glycol extracts from medicinal plants are commonly used as active ingredients in production of medicine and beauty products for external application. In the scientific literature, however, there are almost no data on the extraction effectiveness of water–propylene glycol mixtures and the chemical composition of aqueous pro...
Published in Inorganic Materials
AbstractExtraction of sulfur compounds from oil and petroleum products is a high priority task associated with tightening of the criteria of fuel quality control, negative impact of sulfur on the processing and storage of crude oil, and environmental safety, as well as widespread use of organosulfur substances in different industries. The selectivi...
Published in Inorganic Materials
AbstractThe paper reviews the latest advances in the growth of epitaxial SiC films on Si by the coordinated atomic substitution method. The conceptual issues and procedure of the new method for synthesizing epitaxial SiC films on Si are described. It is shown that this method significantly differs from the classical thin film growth schemes. Film g...
Published in Inorganic Materials
Abstract—This paper presents results of a study of photochemical and thermal transformations of ammonium heptamolybdate-modified aluminosilicates. The optical density of UV irradiation-induced molybdenum polyoxometallate species increases with increasing porosity and interlayer spacing in the aluminosilicates in going from the zeolite to bentonite,...
Published in Inorganic Materials
AbstractThe probabilistic aspects of multiscale modeling of the fracture of heterogeneous structures are considered. An approach combining homogenization methods with phenomenological and numerical models of fracture mechanics is proposed to solve the problems of assessing the probabilities of destruction of structurally heterogeneous materials. A ...
Published in Inorganic Materials
AbstractThe goal of the study is determination of the regularities of changes in cyclic strains and related deformation diagrams attributed to the existence of time dwells in the loading modes and imposition of additional variable stresses on them. Analysis of the obtained experimental data on the kinetics of cyclic elastoplastic deformation diagra...
Published in Inorganic Materials
Abstract—Macrocrystalline tungsten alloys containing 1, 3, and 5 at % alloying additives (Re, Mo, Ta, Cr, Fe, and V) have been prepared by electron-beam floating zone melting. The resultant ingots have been characterized by weighing, chemical analysis, scanning electron microscopy, and energy dispersive X-ray spectroscopy. The tungsten alloys with ...
Published in Inorganic Materials
Abstract—Tensile stresses present in the pipe steels exposed to corrosive environment can result in the corrosion cracking of the pipe material. The standard procedure used for assessing the susceptibility of steels to stress corrosion cracking (for about 720 h) often does not fully provide insight into the characteristics of the material. The goal...
