Dynamic pressing as a way of intensification of structural-phase transformations during sintering of ceramic materials

  • L. P. Schukina NTU “Kharkiv Polytechnic Institute”, Kharkiv, Ukraine
  • V. F. Bolyukh NTU “Kharkiv Polytechnic Institute”, Kharkiv, Ukraine
  • S. L. Lihezin NTU “Kharkiv Polytechnic Institute”, Kharkiv, Ukraine
  • Ya. M. Pitak NTU “Kharkiv Polytechnic Institute”, Kharkiv, Ukraine
Keywords: magnetic-pulse pressing, loam, fuel and mineral additive, ceramic materials, mechanical strength, water absorption, phase composition, energy saving

Abstract

The article presents the studies results of magnetic-pulse pressing in relation to ceramic masses based on non-sintering loam with the addition of coal flotation waste and the possibility of its use as a method for intensifying structural and phase transformations during sintering of masses was shown. A comparative characteristic of the properties of ceramic materials obtained by the usual mode of heat treatment at a temperature of 950 °C by the method of magnetic-pulse pressing with different amplitude of impact force was presented. To determine the operating parameters influence of the magnetic-pulse press on the samples properties, their pressing was carried out with a controlled voltage at a constant capacitance of the capacitor. It was found that an increase in the amplitude of the impact force from 6 kN to 15 kN leads to a decrease in the water absorption of ceramic samples from 21.6 % to 12.1—15.0 %, open porosity from 34.6 % to 21.6—27.0 %, and a threefold increase in mechanical strength. In comparison with samples of static pressing, the cold crushing strength of dynamic pressing samples increases by 34 % (from 8.7 MPa to 13.1 MPa) even with the minimum amplitude of the impact force (6 kN). The macrostructure, phase composition and properties of dynamic pressing ceramic samples obtained at firing temperatures of 920 °C and 950 °C have been studied. It was found that the samples had practically the same level of technical characteristics (water absorption, density, and strength) and they were similar in structure and phase composition (quartz, microcline, ɑ-hematite, X-ray amorphous phase). The possibility of obtaining ceramic materials with a completed process of the structural-phase composition formation and properties at a lower firing temperature has been established.

On the basis of carried out studies, the possibility of using dynamic pressing as a method for intensifying structural-phase transformations during sintering of ceramic materials has been shown, which can serve as a reserve for energy saving when obtaining ordinary structural building ceramics of increased grade.

References

Fabrication and densification behavior analysis of metalizing targets using ZrO2 nanopowders by magnetic pulsed compaction / J. H. Kim et al. Materials Transactions. 2011. Vol. 52, № 6. P. 1156—1162.

Kim J. H, Rumman M. R., Rhee C. K., Lee J. G., Lee M. K., Hong S. J. Fabrication and densification behavior analysis of metalizing targets using ZrO2 nanopowders by magnetic pulsed compaction. Materials Transactions. 2011, vol. 52, no. 6, pp. 1156—1162.

Fabrication of Nd:Y2O3 transparent ceramics by pulsed compaction and sintering of weakly agglomerated nanopowders / A. S. Kaygorodov et al. Journal of the European Ceramic Society. 2007. Vol. 27, № 2—3. Р. 1165—1169.

Kaygorodov A. S., Ivanov V. V., Khrustov V. R., Kotov Yu. A., Medvedev A. I., Osipov V. V., Ivanov M. G., Orlov A. N., Murzakaev A. M. Fabrication of Nd:Y2O3 transparent ceramics by pulsed compaction and sintering of weakly agglomerated nanopowders. Journal of the European Ceramic Society. 2007, vol. 27, no. 2—3, pp. 1165—1169.

Нескоромный С. В., Лемешів С. В., Агеев С. О. Разрядно-импульсное прессование композиционных материалов. Вестник Донского государственного технического университета. 2015. № 4 (83). С. 76—81.

Neskoromnyj S. V., Lemeshov S. V., Ageev S. O. Razrjadno-impul'snoe pressovanie kompozicionnyh materialov [Discharge-pulse pressing of composite materials]. Vestnik Donskogo gosudarstvennogo tehnicheskogo universiteta. 2015, no. 4 (83), pp. 76—81 (in Russian).

Объёмные нанокомпозиты Fe–TiC–Fe3C, полученные механосплавлением в жидких органических средах и магнитно-импульсным прессованием / С. Ф. Ломаева и др. Перспективные материалы. 2012. № 4. С. 61—69.

Lomaeva S. F., Jazovskih K. A., Maratkanova A. N., Sjugaev A. V., Timoshenkova O. R., Kajgorodov A. C., Zajac S. V., Paranin S. N., Ivanov V. V. Objomnye nanokompozity Fe—SiC—Fe3C, poluchennye mehanosplavleniem v zhidkih organicheskih sredah i magnitno-impul'snym pressovaniem [Bulk nanocomposites Fe—SiC—Fe3C obtained by mechanical alloying in liquid organic media and magnetic pulse pressing]. Perspektivnye materialy. 2012, no. 4, pp. 61—69 (in Russian).

Боков А. А., Болтачев Г. Ш., Волков Н. Б. Одноосное компактирование нанопорошков на магнитно-импульсном прессе. Журнал технической физики. 2013. Т. 83. Вып. 10. С. 68—77.

Bokov A. A., Boltachev G. Sh., Volkov N. B. Odnoosnoe kompaktirovanie nanoporoshkov na magnitno-impul'snom presse [Uniaxial compaction of nanopowders on a magnetic pulse press]. Zhurnal tehnicheskoj fiziki. 2013, vol. 83, issue 10, pp. 68—77 (in Russian).

Эффективность методов прессования корундо-циркониевых порошков различной дисперсности / Ю. М. Анненков и др. Известия Томского политехнического университета. 2005. Т. 308. № 7. С. 39—42.

Annenkov Ju. M., Ivanov V. V., Ivashutenko A. S., Kondratjuk A. A. Jeffektivnost' metodov pressovanija korundo-cirkonievyh poroshkov razlichnoj dispersnosti [Efficiency of pressing methods for corundum-zirconium powders of different dispersion]. Izvestija Tomskogo politehnicheskogo universiteta. 2005, vol. 308, no. 7, pp. 39—42 (in Russian).

Магнітно-імпульсне пресування як фактор впливу на властивості керамічних матеріалів / С. Л. Лігезін, Л. П. Щукіна, В. Ф. Болюх, А. О. Нагорний. Физико-химические проблемы в технологии тугоплавких неметаллических и силикатных материалов : междунар. науч.-техн. конф., 2020 р. : тезисы докл. Харьков, 2020. С. 57—58.

Ligezin S. L., Schukina L. P., Bolyux V. F., Nagorny`j A. O. Magnitno-impul`sne presuvannya yak faktor vply`vu na vlasty`vosti keramichny`x materialiv [Magnetic-pulse pressing as a factor influencing the properties of ceramic materials]. Fiziko-himicheskie problemy v tehnologii tugoplavkih nemetallicheskih i silikatnyh materialov. Tezisy dokladov mezhdunarodnoy nauchno-teknicheskoy konferencii (2020, Kharkiv) [Physicochemical problems in the technology of refractory non-metallic and silicate materials. Abstracts of Int. Sci.-Techn. Conf. (2020, Kharkiv)]. Khar'kiv, 2020, рp. 57—58 (in Ukrainian).

Теоретические и экспериментальные исследования магнитно-импульсного пресса для керамических порошков / В. Ф. Болюх, Ю. В. Кашанский, И. С. Щукин, Л. П. Щукина. Вісник Національного технічного університету «ХПІ». Серія : Електричні машини та електромеханічне перетворення енергії . 2019. № 4 (1329). С. 23—31.

Boljuh V. F., Kashanskij Ju. V., Schukin I. S., Schukina L. P. Teoreticheskie i jeksperimental'nye issledovanija magnitno-impul'snogo pressa dlja keramicheskih poroshkov [Theoretical and experimental studies of a magnetic-pulse press for ceramic powders]. Visny`k Nacional`nogo texnichnogo universy`tetu ″KhPI″. Seriya : Elektry`chni mashy`ny` ta elektromexanichne peretvorennya energiyi [Bulletin of the National Technical University ″KhPI″. Series: Electric machines and electromechanical energy conversion]. Kharkiv, NTU ″KhPI″ Publ., 2019, no. 4 (1329), pp. 23—31 (in Russian).

Published
2021-12-30
How to Cite
Schukina, L. P., Bolyukh, V. F., Lihezin, S. L., & Pitak, Y. M. (2021). Dynamic pressing as a way of intensification of structural-phase transformations during sintering of ceramic materials . Scientific Research on Refractories and Technical Ceramics, 121, 162-168. https://doi.org/10.35857/2663-3566.121.17

Most read articles by the same author(s)