Open AccessProcessing and properties of ceramic yttrium manganite sintered by different methods
Author(s) -
Milica Počuča-Nešić,
Zorica Marinković-Stanojević,
Miladin Radović,
Rogelio Benitez,
Marko Jagodič,
Goran Branković,
Zorica Branković
Publication year - 2021
Publication title -
science of sintering/science of sintering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.309
H-Index - 25
eISSN - 1820-7413
pISSN - 0350-820X
DOI - 10.2298/sos2104485p
Subject(s) - materials science , sintering , ceramic , relative density , yttrium , manganite , intergranular corrosion , ferroelectricity , composite material , phase (matter) , metallurgy , microstructure , ferromagnetism , dielectric , optoelectronics , condensed matter physics , physics , chemistry , organic chemistry , oxide
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 %.