Processing and Properties of Ceramic Yttrium Manganite Sintered by Different Methods

  • Milica Počuča-Nešić Center for Green Technologies, Institute for Multidisciplinary Research, University of Belgrade
  • Zorica Marinković Stanojević Center for Green Technologies, Institute for Multidisciplinary Research, University of Belgrade
  • Miladin Radović Department of Materials Science and Engineering Program, Texas AM University
  • Rogelio Benitez Department of Materials Science and Engineering Program, Texas AM University
  • Marko Jagodič Institute for Mathematics, Physics and Mechanics
  • Goran Branković Center for Green Technologies, Institute for Multidisciplinary Research, University of Belgrade
  • Zorica Branković Center for Green Technologies, Institute for Multidisciplinary Research, University of Belgrade

Abstract

Intergranular and intragranular cracks that usually form during sintering of yttrium manganite (YMnO3) ceramic samples hinder the densification process of this ceramic and deteriorate its magnetic and ferroelectric properties. To overcome this problem, mechanochemically synthesized YMnO3 powder was sintered using two different processes: Conventional Sintering (CS) and Pulsed Electric Current Sintering (PECS). All samples were characterized by XRD, SEM and FESEM and their magnetic and ferroelectric properties were investigated. Apart from their phase composition, conventionally sintered ceramic samples showed cracks throughout their whole volume, reaching a maximum relative density of 85 %. However, it was found that PECS process could significantly reduce the presence of cracks within samples whose relative density reached 99.8 %.

Published
2021-11-20
Issue
Vol 53 No 4 (2021)
Section
Articles

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