Investigation of heating rate effect on solid-phase interaction in Li<inf>2</inf>CO<inf>3</inf> - Fe<inf>2</inf>O<inf>3</inf> reaction mixture

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The influence of heating rate on solid-phase interaction in Li<inf>2</inf>CO<inf>3</inf> - Fe<inf>2</inf>O<inf>3</inf> reaction mixture was investigated by thermal analysis method. The powder mixture components were in the ratio corresponding to LiFe<inf>5</inf>O<inf>8</inf> ferrite. The ferrite synthesis was performed by thermal heating of mixture reagents in thermal analyzer up to 800 °C in air at various heating rates in the ranges (5-50) °C/min. The results showed that the heating rate affects the solid-phase interaction in Li<inf>2</inf>CO<inf>3</inf> - Fe<inf>2</inf>O<inf>3</inf> reaction mixture. The reaction phase formation is accompanied by heat endothermic effect, which was observed in the DSC curve in the form of a complex broad peak. For all samples, this complex peaks were decomposed into simpler peaks, and thereby, the enthalpies of the individual phase transitions were determined. It was shown that the heating rate affects the values of enthalpy and temperatures of heat endothermic effects, so that the high heating rate shifts the proceeding of reaction to higher temperatures.

Original languageEnglish
Title of host publicationIOP Conference Series: Materials Science and Engineering
PublisherInstitute of Physics Publishing
Volume81
Edition1
DOIs
Publication statusPublished - 23 Apr 2015
EventInternational Scientific Conference on Radiation-Thermal Effects and Processes in Inorganic Materials, RTEP 2014 - Tomsk, Russian Federation
Duration: 3 Nov 20148 Nov 2014

Other

OtherInternational Scientific Conference on Radiation-Thermal Effects and Processes in Inorganic Materials, RTEP 2014
CountryRussian Federation
CityTomsk
Period3.11.148.11.14

Fingerprint

Heating rate
Thermal effects
Ferrite
Enthalpy
Powders
Thermoanalysis
Phase transitions
Heating
Temperature
Air
Hot Temperature

ASJC Scopus subject areas

  • Engineering(all)
  • Materials Science(all)

Cite this

Investigation of heating rate effect on solid-phase interaction in Li<inf>2</inf>CO<inf>3</inf> - Fe<inf>2</inf>O<inf>3</inf> reaction mixture. / Lysenko, E. N.; Nikolaev, Evgeny Vladimirovich; Vasendina, E. A.

IOP Conference Series: Materials Science and Engineering. Vol. 81 1. ed. Institute of Physics Publishing, 2015. 012104.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Lysenko, EN, Nikolaev, EV & Vasendina, EA 2015, Investigation of heating rate effect on solid-phase interaction in Li<inf>2</inf>CO<inf>3</inf> - Fe<inf>2</inf>O<inf>3</inf> reaction mixture. in IOP Conference Series: Materials Science and Engineering. 1 edn, vol. 81, 012104, Institute of Physics Publishing, International Scientific Conference on Radiation-Thermal Effects and Processes in Inorganic Materials, RTEP 2014, Tomsk, Russian Federation, 3.11.14. https://doi.org/10.1088/1757-899X/81/1/012104
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AB - The influence of heating rate on solid-phase interaction in Li2CO3 - Fe2O3 reaction mixture was investigated by thermal analysis method. The powder mixture components were in the ratio corresponding to LiFe5O8 ferrite. The ferrite synthesis was performed by thermal heating of mixture reagents in thermal analyzer up to 800 °C in air at various heating rates in the ranges (5-50) °C/min. The results showed that the heating rate affects the solid-phase interaction in Li2CO3 - Fe2O3 reaction mixture. The reaction phase formation is accompanied by heat endothermic effect, which was observed in the DSC curve in the form of a complex broad peak. For all samples, this complex peaks were decomposed into simpler peaks, and thereby, the enthalpies of the individual phase transitions were determined. It was shown that the heating rate affects the values of enthalpy and temperatures of heat endothermic effects, so that the high heating rate shifts the proceeding of reaction to higher temperatures.

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