Прогнозирование и перспективы диссипативной структуры в керамических материалах
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Дата
2016
ORCID
DOI
Науковий ступінь
Рівень дисертації
Шифр та назва спеціальності
Рада захисту
Установа захисту
Науковий керівник
Члени комітету
Видавець
НТУ "ХПИ"
Анотація
Обсуждаются аспекты упрочнения керамических материалов за счет наноструктурирования фазового состава непосредственно в обжиге при достижении температуры сопряжения твердофазных реакций. Рассматриваются перспективы нанодисперсного упрочнения межфазных границ, при котором равномерность распределения дисперсной фазы регулируется собственно самоорганизующимся характером протекания твердофазных взаимодействий.
As the main reasons for the formation of dissipative structures considered pairing solid-exchange reactions. In this case, the term "conjugate" refers to the state of the reaction system at a certain value of the external parameter (temperature), when at the same time ensures the thermodynamic condition of equality of the Gibbs free energy change of solid state reactions of exchange and kinetic condition of equality of the velocities of these reactions (steady state). At a temperature pairing of the material with equal probability is present all reactants and all products are solid-state interactions that are at the nanoscale level, and have a higher degree of combinatorial possibilities of the organization of the structural elements. Generated principles of dissipative structures in ceramic materials from the standpoint of heat resistance, the effect of nanostructuring directly to the heat treatment time, the thermal conductivity anisotropy, high temperature hardening. The characteristic experimental results of studies demonstrating the future prospects of the development of appropriate technologies and supporting the competitiveness of ceramic materials with dissipative structure.
As the main reasons for the formation of dissipative structures considered pairing solid-exchange reactions. In this case, the term "conjugate" refers to the state of the reaction system at a certain value of the external parameter (temperature), when at the same time ensures the thermodynamic condition of equality of the Gibbs free energy change of solid state reactions of exchange and kinetic condition of equality of the velocities of these reactions (steady state). At a temperature pairing of the material with equal probability is present all reactants and all products are solid-state interactions that are at the nanoscale level, and have a higher degree of combinatorial possibilities of the organization of the structural elements. Generated principles of dissipative structures in ceramic materials from the standpoint of heat resistance, the effect of nanostructuring directly to the heat treatment time, the thermal conductivity anisotropy, high temperature hardening. The characteristic experimental results of studies demonstrating the future prospects of the development of appropriate technologies and supporting the competitiveness of ceramic materials with dissipative structure.
Опис
Ключові слова
материалы керамические, структура диссипативная, спекание, самоорганизация, реакции твердофазные, ceramic materials, dissipative structure, sintering, self-organization, solid-phase reactions
Бібліографічний опис
Прогнозирование и перспективы диссипативной структуры в керамических материалах / С. М. Логвинков [и др.] // Вісник Нац. техн. ун-ту "ХПІ" : зб. наук. пр. Темат. вип. : Хімія, хімічна технологія та екологія = Bulletin of National Technical University "KhPI" : coll. of sci. papers. Ser. : Chemistry, Chemical Technology and Environment. – Харків : НТУ "ХПІ", 2016. – № 22 (1194). – С. 126-131.