Vaporization and Thermodynamic Properties of SrO–Al2O3 Ceramics at High Temperatures

Stolyarova, V. L.; Лопатин, С. И.; Selyutin, A. A.; Vorozhtcov, Viktor A.; Шугуров, С. М.

doi:10.1134/s0036023622601428

Cited by 3 publications

(1 citation statement)

References 16 publications

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“…It should be mentioned that, although not included in the reviews discussed earlier, recent experimental data obtained using KEMS at high temperatures on oxide systems and materials for nuclear applications such as the UO 2 ‐ZrO 2 , 67,210 Cs 2 O‐B 2 O 3 , 211 Cs 2 O‐MoO 3 , 212 and SrO‐Al 2 O 3 213,214 systems are available. Recent KEMS data on ceramics and glass ceramics with the special unique physicochemical properties such as the ZnO‐Nb 2 O 5 , 215 TiO 2 ‐Al 2 O 3 ‐SiO 2 , 216,217 and Al 2 O 3 ‐SiO 2 ‐ZrO 2 systems 218 as well as ultrahigh refractory ceramics based on the binary and multicomponent systems containing rare‐earth and hafnium oxides 219–221 have also been reported.…”

Section: Measurements Of Partial Pressures and Thermodynamic Properti...mentioning

confidence: 99%

Knudsen effusion mass spectrometry: Current and future approaches

Jacobson,

Colle,

Stolyarova

et al. 2024

Rapid Comm Mass Spectrometry

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RationaleKnudsen effusion mass spectrometry (KEMS) has been a powerful tool in physical chemistry since 1954. There are many excellent reviews of the basic principles of KEMS in the literature. In this review, we focus on the current status and potential growth areas for this instrumental technique.MethodsWe discuss (1) instrumentation, (2) measurement techniques, and (3) selected novel applications of the technique. Improved heating methods and temperature measurement allow for better control of the Knudsen cell effusive source. Accurate computer models of the effusive beam and its introduction to the ionizer allow optimization of such parameters as sensitivity and removal of background signals. Computer models of the ionizer allow for optimized sensitivity and resolution. Additionally, data acquisition systems specifically tailored to a KEMS system permit improved quantity and quality of data.ResultsKEMS is traditionally utilized for thermodynamic measurements of pure compounds and solutions. These measurements can now be strengthened using first principles and model‐based computational thermochemistry. First principles can be used to calculate accurate Gibbs energy functions (gefs) for improving third law calculations. Calculated enthalpies of formation and dissociation energies from ab initio methods can be compared to those measured using KEMS. For model‐based thermochemistry, solution parameters can be derived from measured thermochemical data on metallic and nonmetallic solutions. Beyond thermodynamic measurements, KEMS has been used for many specific applications. We select examples for discussion: measurements of phase changes, measurement/control of low‐oxygen potential systems, thermochemistry of ultrahigh‐temperature ceramics, geological applications, nuclear applications, applications to organic and organometallic compounds, and thermochemistry of functional room temperature materials, such as lithium ion batteries.ConclusionsWe present an overview of the current status of KEMS and discuss ideas for improving KEMS instrumentation and measurements. We discuss selected KEMS studies to illustrate future directions of KEMS.

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Section: Measurements Of Partial Pressures and Thermodynamic Properti...mentioning

confidence: 99%

Knudsen effusion mass spectrometry: Current and future approaches

Jacobson,

Colle,

Stolyarova

et al. 2024

Rapid Comm Mass Spectrometry

View full text Add to dashboard Cite

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Current-carrying tribological behavior of copper alloy matrix and molybdenum alloy coating at high current density

Zhou,

Li,

Tan

et al. 2024

Journal of Vacuum Science &Amp; Technology A

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Improving the current-carrying friction and wear resistance of copper alloy current-carrying friction subsets effectively is a hot topic. In this paper, a method of preparing high melting point molybdenum-based coating on copper alloy surfaces by laser cladding technology is presented. A large current (106 A/m2) comparison experiment is carried out with a self-made current-carrying friction device, and the failure mechanism is analyzed. The results show that the molybdenum-based coating significantly improves the adhesion problem between the friction partner and the copper alloy substrate, while the thickness of the stress layer caused by the current-carrying friction is reduced by about 7 times. The molybdenum-based coating significantly reduces the surface arc rate and has a lower friction interface temperature, thus retaining the Al2O3 self-lubricating phase. The research in this paper is expected to provide extended research ideas for the surface protection of current-carrying friction subsets of copper alloys.

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Thermodynamics and vapourization of Cs-, Sr-, Ba-containing oxide systems valid for nuclear safety problems

Stolyarova,

Shilov,

Sokolova

et al. 2023

Usp. khim.

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Обзор содержит систематический анализ исследований, проведенных, главным образом, за последние десять лет и посвященных исследованию термодинамических свойств и процессов испарения систем, содержащих цезий, стронций и барий, методом высокотемпературной масс-спектрометрии. Такие системы вызывают особый интерес в связи с проблемами экологической безопасности атомной энергетики. Особое внимание уделено вопросам достоверной идентификации состава газовой фазы над оксидными системами, значимой для различных высокотемпературных технологий, в том числе, захоронения радиоактивных отходов, переработки ядерного топлива, а также обеспечения безопасной работы атомных электростанций. Также проведен анализ и сравнение опубликованных термодинамических данных, касающихся рассматриваемых систем, в широком диапазоне температур, демонстрирующий основные преимущества масс-спектрометрического эффузионного метода Кнудсена.<br> Библиография — 117 ссылок.

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Vaporization and Thermodynamic Properties of SrO–Al2O3 Ceramics at High Temperatures

Cited by 3 publications

References 16 publications

Knudsen effusion mass spectrometry: Current and future approaches

Knudsen effusion mass spectrometry: Current and future approaches

Current-carrying tribological behavior of copper alloy matrix and molybdenum alloy coating at high current density

Thermodynamics and vapourization of Cs-, Sr-, Ba-containing oxide systems valid for nuclear safety problems

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