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  1. No Access

    Article

    Phase Formation during Aluminothermic Reduction of Titanium from Its Oxides with the Anatase and Rutile Structures

    Low-temperature phase formation processes (below 1270–1450°C) underlying aluminothermic reduction of titanium from different TiO2 polymorphs—stable rutile and metastable anatase—have been studied during continuou...

    R. I. Gulyaeva, K. V. Pikulin, A. N. Mansurova, S. M. Pikalov… in Inorganic Materials (2023)

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    Article

    Structure, Oxygen Mobility, and Electrochemical Characteristics of La1.7Ca0.3Ni1 ‒ xCuxO4 + δ Materials

    The Ruddlesden‒Popper phases pertain to numerous promising materials with the mixed ionic-electronic conductivity used in devices such as oxygen-conducting membranes, solid oxide fuel cells (SOFC), and electro...

    V. A. Sadykov, E. M. Sadovskaya, N. F. Eremeev… in Russian Journal of Electrochemistry (2023)

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    Article

    Features of Pyrite Thermal Expansion in Air

    We investigate the natural pyrite composition by atomic emission spectroscopy, X-ray powder diffraction, scanning electron microscopy, and energy dispersive X-ray microanalysis. Using the data of high-temperat...

    A. M. Klyushnikov, E. N. Selivanov, S. M. Pikalov in Inorganic Materials: Applied Research (2022)

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    Article

    Mechanism of Passive Layer Formation during Electrochemical Oxidation of Copper(I) Sulfide

    The structure and phase composition of synthesized copper(I) sulfide are studied. It is shown that, both chalcocite (Cu2S) and jarleite (Cu31S16) phases can form in the copper sulfide crystallization. Jarleite is...

    O. V. Nechvoglod, S. M. Pikalov in Russian Journal of Electrochemistry (2021)

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    Article

    Transport features in layered nickelates: correlation between structure, oxygen diffusion, electrical and electrochemical properties

    Oxygen migration is increasingly acknowledged as playing an important role in the ionic transport in mixed conductors and influencing the electrode electrochemical performance. The aim of this work was to esta...

    V. A. Sadykov, E. M. Sadovskaya, E. Yu. Pikalova, A. A. Kolchugin, E. A. Filonova… in Ionics (2018)

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    Article

    Mechanism and Kinetics of the Thermal Oxidation of Natural Sphalerite

    The oxidation of natural sphalerite on heating in an oxidative medium is studied by thermogravimetry coupled with scanning calorimetry, mass spectrometry of released gases, and X-ray powder diffraction analysi...

    R. I. Gulyaeva, E. N. Selivanov, S. M. Pikalov in Russian Metallurgy (Metally) (2018)

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    Chapter

    Structural and Electrical Properties of Composites Based on Ni and NiAl Alloys for SOFC Application

    Ni and NiAl alloys were utilized as the components of the composites on the base of Zr0.81Y0.19O2-δ and Al2O3 ceramic powders. The synthesis of composites was performed directly from the mechanical mixtures of me...

    S. M. Pikalov, E. Yu. Pikalova… in Challenges and Solutions in the Russian En… (2018)