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Effects of mechanical activation and two-step sintering on the structure and electrical properties of cordierite-based ceramics

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2016
Authors
Obradović, Nina
Filipović, Suzana
Đorđević, Nataša
Kosanović, Darko
Marković, Smilja
Pavlović, Vladimir B.
Olćan, Dragan
Đorđević, Antonije
Kachlik, Martin
Maca, Karel
Article (Published version)
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Abstract
The mechanical activation can help reduce production costs and modify cordierite-based materials. In this study, the structure and electrical properties of the mechanically activated MgO-Al2O3-SiO2 system have been analyzed. The mixtures of MgO-Al2O3-SiO2 powders were mechanically activated in a planetary ball mill for time periods ranging from 0 to 160 min. Structural investigations were performed on the obtained powders. The effects of activation and a two-step sintering process on the microstructure and crystal structure were investigated by scanning electron microscopy (SEM) and X-ray diffraction (XRD). The thermal stability was analyzed using DTA. Electrical measurements showed variations of the dielectric constant (εr) and loss tangent (tan δ) as a function of the time of mechanical treatment.
Keywords:
milling / dielectric properties / cordierite / sintering
Source:
Ceramics International, 2016, 42, 12, 13909-13918
Publisher:
  • Elsevier
Projects:
  • Directed synthesis, structure and properties of multifunctional materials (RS-172057)
  • Grant Agency of the Czech Republic, Project 15-06390S
  • Ministry of Education, Youth and Sports (MEYS) of Czech Republic - CEITEC 2020 [LQ1601]

DOI: 10.1016/j.ceramint.2016.05.201

ISSN: 0272-8842

WoS: 000380081900074

Scopus: 2-s2.0-84976351120
[ Google Scholar ]
17
14
URI
http://dais.sanu.ac.rs/123456789/2322
Collections
  • ITN SANU - Opšta kolekcija / ITS SASA - General collection
Institution
Институт техничких наука САНУ / Institute of Technical Sciences SASA

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