Кафедра "Технологія кераміки, вогнетривів, скла та емалей"

Постійне посилання колекціїhttps://repository.kpi.kharkov.ua/handle/KhPI-Press/7480

Офіційний сайт кафедри http://web.kpi.kharkov.ua/ceramic

Кафедра "Технологія кераміки, вогнетривів, скла та емалей", первісна назва – кафедра силікатів, була створена в 1926 році в складі Харківського Хіміко-технологічного інституту.

Першим завідувачем кафедри (1926 – 1941 рр.) та засновником наукової школи був вчений зі світовим ім'ям, тричі Лауреат Державних премій, Заслужений діяч науки і техніки, академік АН УССР і член-кореспондент АН СССР, доктор технічних наук, професор Петро Петрович Будніков. Підготовка спеціалістів з силікатних технологій була започаткована в 1910 році на кафедрі мінеральної сировини під керівництвом академіка Єгора Івановича Орлова.

Кафедра входить до складу Навчально-наукового інституту хімічних технологій та інженерії Національного технічного університету "Харківський політехнічний інститут".

У складі науково-педагогічного колективу кафедри працюють: 5 докторів та 3 кандидата технічних наук; 4 співробітника мають звання професора, 3 – доцента.

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Radioprotective cement for long-term storage of nuclear waste
(Український державний хіміко-технологічний університет, 2020) Kustov, M. V.; Kalugin, V. D.; Deineka, V. V.; Shabanova, G. M.; Korohodska, A. M.; Slepuzhnikov, E. D.; Deineka, D. M.
To enhance the service safety of the geological repositories which are intended for a highly long-term storage of nuclear waste, we proposed coating the walls of repositories with a hermetically sealed radiation-resistant material. To this end, the compounds of a fourcomponent system CaO–BaO–Fe₂O₃–SiO₂ were suggested. Based on these compounds, we developed the technology for the production of special polyfunctional corrosion-resistant cements that can be used for the production of extra strong radiation-protective and corrosion–resistant plugging cements. The thermodynamic analysis revealed probable phase equilibriums and enabled the tetrahedration of the system at the synthesis temperature of 1200 ⁰C, which allowed minimizing the volume of required thermodynamic calculations. The processes of hydration of calcium-barium ferrosilicate cement were investigated. It was established that barium hydrosilicates and calcium and barium hydroferrites of a different basicity are the main hydration products; this provides high strength properties of the cement stone. The obtained materials are cements with a high strength (the compressive strength of 58.9 MPa), enhanced protective and corrosion-resistant properties (the calculated mass absorption coefficient and sulfate-resistance factor being equal to 247 cm²/g and 1.31, respectively). The protective concretes with different fillers, which were fabricated based on the developed cements, have a high strength (ultimate compressive strength of 58.4 MPa), a low level of softening in the temperature range of 20–1200 ⁰C (from 15 to 19%). They can be used at the service temperature of up to 1200 ⁰C.
Alkali-earth element aluminates and chromites cement bonded refractory castables
(The editorial committee of China's refractories, 2016) Shabanova, G. N.; Korohodska, A. M.
This scientific paper gives the data of theoretical and experimental research done to solve the scientific and practical problem related to the establishment of theoretical basics and the development of the technology for the production of refractory castables of high strength, high refractoriness and hostile environment resistance on the basis of aluminates and chromites of alkaliearth elements due to the well-directed formation of the phase composition and the structure of clinker, cement stone and castables. The conceptual principles of the formation of such materials are based on the primary thermodynamically advantageous coexistence of the special-purpose combinations of phases in the subsolidus structure of the multicomponent subsystems of the oxide system (Mg, Ca, Sr, Ba)O – Al₂O₃ – Cr₂O₃. The obtained data allow for the development of highstrength refractory alumochromite cements and castables based on them. Specific features of the behavior of phase formation processes and the hydration of alumochromite cements, including the structure formation during the castable service have been studied.
Modified alumina cement with high service properties
(The editorial committee of China's refractories, 2016) Logvinkov, S. M.; Shabanova, G. N.; Korohodska, A. M.; Khrystych, E. V.
This scientific paper gives consideration to the information on the contemporary structure of binary systems and three-component CaO – Al₂O₃ – ZrO₂ system required to select rational parameters for the synthesis of cementing agents. The production process of experimental clinker that has a Ca₇Al₆ZrO₁₈ composition has been described. The data of X-ray phase analysis and petrographic analysis of the experimental composition of special cement have been given and the reasons for availability of inappropriate phases have been analyzed. The processes of hydration hardening of the cement stone have been studied and the data of differential thermal analysis were used for the establishment of the hydration mechanism for basic crystal phases in the cement clinker composition. The differences in the hydration processes of experimental special cement were analyzed in comparison with known mechanisms. A possibility of the exploitation of special binder in contact with ZrO2 ( CaO–stabilized ) was tested using the specimens of fine concrete that were subjected to thermal treatment in different modes. The physical and mechanical properties of specimens and the mineralogical composition of concretes were given based on the data of X-ray analysis and the petrographic analysis. The cement additive was selected and its amount in the concrete composition was defined to slow-down the hardening and the mixture plasticization time. The relationships of physical and mechanical characteristics of concrete specimens were defined experimentally as a function of granulometric composition of the filler and thermal treatment temperature. The investigation data of corrosion resistance obtained using the static method were used to find out if experimental concretes can operate in contact with the steel-smelting alkaline slag.
Secondary resources recycling in building and refractory binders technology
(Харківський національний університет будівництва та архітектури, 2016) Nagorniy, A. O.; Shabanova, G. N.; Korohodska, A. M.; Gaponova, O. O.
The binders manufacture requires continuous expenditures of natural raw while there is a lack of relatively pure raw sources. Latest ten year analysis of limestone chemical content changing at the cement plants shows that limestone raw contains some impurities enabling to cause the long-time strength reducing. Thus, the traditional raw substitution along with the various industrial waste utilization problems is urgent in connection with a rising necessity to extend the raw base and to improve the ecological situation in Ukraine. Beside at the moment the million tons of waste are being accumulated and every year their amount rises.
Thermodynamic analysis of the possible existence of the ternary Вa₃СоAl₄O₁₀ compound in the ВаО–СоО–Аl₂O₃ system
(Український державний хіміко-технологічний університет, 2020) Shabanova, G. N.; Korohodska, A. M.; Gamova, O. A.; Gaponova, H. A.; Levadnaya, S. V.
The work was aimed at the thermodynamic estimation of the possible existence of ternary compound Вa₃СоAl₄O₁₀ in the BaO–CoO–Аl₂O₃ system. To this end, the composition of the expected ternary compound was calculated considering that this compound should be located in the CoAl₂O₄–Вa₃Аl₂O₆ conode. With reference to this, the temperature and the eutectic composition in the binary section of CoAl₂O₄–Вa₃Аl₂O₆ were estimated. The standard enthalpy of the formation of the above three-component compound, the standard entropy and the coefficients of the temperature dependence of the heat capacity were calculated. Using the method developed by Babushkin, the temperature dependence of the Gibbs energy for the formation of Вa₃СоAl₄O₁₀ compound was determined for the range of 800 to 2000 K. The probability of the Вa₃СоAl₄O₁₀ formation was evaluated both for its preparation both from pure aluminum, cobalt and barium oxides and from barium carbonate, aluminum and cobalt oxides. In addition, the probability of the Вa₃СоAl₄O₁₀ formation from binary compounds CoAl₂O₄ and Вa₃Аl₂O₆ was estimated. The possible formation of the ternary compound from Вa₃Аl₂O₆, BaAl₂O₄ and CoO was also considered, because the Вa₃СоAl₄O₁₀ compound is located in this triangle. The graphs of the change of Gibbs energy with temperature (800–2000 K) were plotted for all reactions. The obtained results showed that the formation of the ternary compound from barium, aluminum and cobalt oxides is more feasible from the standpoint of thermodynamics than from the binary compounds.
The classes of inorganic substances
(2020) Ved, M. V.; Korohodska, A. M.; Proskurina, V. O.
The classes of inorganic substances are the fundamental material in the course of general and inorganic chemistry studying. The classification of substances facilitates the study and systematizes the whole variety of inorganic compounds in nature. Knowing the structural features of the chemical compounds classes, it is possible to characterize the properties of their individual representatives. The purpose of the work is to help students fill the missing knowledge and fully master the presented material. The nomenclature, production and chemical properties of the main classes of inorganic compounds (oxides, bases, acids and salts) are considered.