期刊
SCIENCE OF SINTERING
卷 53, 期 4, 页码 485-496出版社
INT INST SCIENCE SINTERING (I I S S)
DOI: 10.2298/SOS2104485P
关键词
Yttrium manganite; Pulsed Electric Current Sintering; Magnetic properties; Microstructure
资金
- Ministry of Education, Science and Technological Development of the Republic of Serbia [451-03-9/202114/200053]
- Slovenian Research Agency [P2-0348]
- U.S. National Science Foundation [1057155]
- Direct For Mathematical & Physical Scien
- Division Of Materials Research [1057155] Funding Source: National Science Foundation
Intergranular and intragranular cracks in yttrium manganite ceramic samples hinder the densification process and deteriorate magnetic and ferroelectric properties. Pulsed Electric Current Sintering was found to significantly reduce crack presence and improve relative density compared to Conventional Sintering.
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 %.
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