TY - JOUR
T1 - Conventional and Spark Plasma Sintered Ba0.8Pb0.2TiO3 Nano Ceramics
T2 - Structural, Dielectric, and Ferroelectric Properties
AU - Mudinepalli, Venkata Ramana
AU - Leng, Feng
AU - Lin, W. C.
AU - Murty, B. S.
N1 - Funding Information:
This study was financially sponsored by Ministry of Science and Technology, Taiwan under Grant Nos. NSC 104-2811-M-003-003.
Publisher Copyright:
© 2016, The Minerals, Metals & Materials Society and ASM International.
PY - 2016/6/1
Y1 - 2016/6/1
N2 - Ba0.8Pb0.2TiO3 nanocrystalline ferroelectric ceramics were prepared by high-energy ball mill followed by spark plasma sintering and conventional sintering techniques. Sintering behavior, microstructure, dielectric properties, and ferroelectric properties were investigated by XRD, SEM, dielectric spectrometer, and ferroelectric P-E loop tracer. It was found that the densification process was greatly enhanced during SPS. The sintering temperature was 673 K (400 °C) lower and the microstructure was much finer than that of conventionally sintered ceramics, and dense compacts with a higher density of over 99 pct were obtained. The average grain size in the conventionally sintered samples is up to about 200 nm, while that in the spark plasma sintered prepared sample is only about 100 nm. The room temperature and transition temperature dielectric constant of spark plasma-sintered samples is higher than that of the conventionally sintered sample. There is a noticeable difference in processing time between conventional sintering and spark plasma sintering, and the latter offers potential advantage in time saving also.
AB - Ba0.8Pb0.2TiO3 nanocrystalline ferroelectric ceramics were prepared by high-energy ball mill followed by spark plasma sintering and conventional sintering techniques. Sintering behavior, microstructure, dielectric properties, and ferroelectric properties were investigated by XRD, SEM, dielectric spectrometer, and ferroelectric P-E loop tracer. It was found that the densification process was greatly enhanced during SPS. The sintering temperature was 673 K (400 °C) lower and the microstructure was much finer than that of conventionally sintered ceramics, and dense compacts with a higher density of over 99 pct were obtained. The average grain size in the conventionally sintered samples is up to about 200 nm, while that in the spark plasma sintered prepared sample is only about 100 nm. The room temperature and transition temperature dielectric constant of spark plasma-sintered samples is higher than that of the conventionally sintered sample. There is a noticeable difference in processing time between conventional sintering and spark plasma sintering, and the latter offers potential advantage in time saving also.
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U2 - 10.1007/s11661-016-3441-7
DO - 10.1007/s11661-016-3441-7
M3 - Article
AN - SCOPUS:84963742697
SN - 1073-5623
VL - 47
SP - 2579
EP - 2586
JO - Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
JF - Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
IS - 6
ER -