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Impact of relaxation time of activated mixture on ceramics synthesis for electronics purposes

Uticaj vremena relaksacije aktivirane smeše na sintezu keramike za namenu u elektronici

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6116-49-18613-2-10-20201102.pdf (309.9Kb)
Authors
Đorđević, Nataša
Vlahović, Milica
Mihajlović, Slavica
Martinović, Sanja
Conference object (Published version)
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Abstract
Due to its properties, cordierite, 2MgO·2Al2O3·5SiO2, is nowadays an attractive ceramic material for various applications but with very high sintering temperature. Mechanochemical activation of the initial components mixture was performed in order to decrease the sintering temperature. DTA method was used to monitor the temperature induced changes in the analyzed three-component system. Since previous research has pointed out that the relaxation time can influence the activated components in terms of chemical changes and the activation degree, it was important to determine whether it has an impact on the observed activated system. The influence of the relaxation time on the activated components mixture was analyzed by FT IR spectroscopy of both the initial components and the activated mixture after 24h and 24 months relaxation periods.
Zahvaljujući svojim svojstvima, kordijerit, 2MgO·2Al2O3·5SiO2, danas je atraktivan keramički materijal za razne primene, ali sa vrlo visokom temperaturom sinterovanja. Mehanohemijska aktivacija smeše početnih komponenti izvedena je da bi se snizila temperatura sinterovanja. DTA metoda je korišćena za praćenje temperaturnih promena u analiziranom trokomponentnom sistemu. Kako je ranijim istraživanjima utvrđeno da vreme relaksacije može da utiče na aktivirane komponente u smislu hemijskih promena i stepena aktiviranosti, bilo je značajno utvrditi ima li uticaj i na posmatrani aktivirani system. Uticaj vremena relaksacije na smešu aktiviranih komponenata analiziran je FT IR spektroskopijom i početnih komponenti i aktivirane smeše nakon 24h i 24 meseca perioda relaksacije.
Keywords:
cordierite / sintering / mechanochemical activation / DTA / FTIR
Source:
Proceedings - 8th International Conference on Renewable Electrical Power Sources / Zbornik radova - 8. Međunarodna konferencijea o obnovljivim izvorima električne energije, 2020, 57-61
Publisher:
  • Beograd : Savez mašinskih i elektrotehničkih inženjera i tehničara Srbije - SMEITS
Projects:
  • Ministry of Education, Science and Technological Development, Republic of Serbia, Grant no. 451-03-68/2020-14/200026 (University of Belgrade, Institute of Chemistry, Technology and Metallurgy - IChTM) (RS-200026)
  • Ministry of Education, Science and Technological Development, Republic of Serbia, Grant no. 451-03-68/2020-14/200023 (Institute of Technology of Nuclear and Other Mineral Row Materials - ITNMS, Belgrade) (RS-200023)

ISBN: 978-86-85535-06-2

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http://izdanja.smeits.rs/index.php/mkoiee/article/view/6116
https://cer.ihtm.bg.ac.rs/handle/123456789/3789
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