Enhanced dielectric properties of highly dense Ba0.5Sr0.5TiO3 ceramics via non-toxic gelcasting

Jie Xu; Shuhang Liu; Yujian Wang; Yiting Guo; Jia Zhao; Haixue Yan; Feng Gao

doi:10.1007/s10854-020-04336-0

Enhanced dielectric properties of highly dense Ba_0.5Sr_0.5TiO₃ ceramics via non-toxic gelcasting

Jie Xu, Shuhang Liu, Yujian Wang, Yiting Guo, Jia Zhao, Haixue Yan, Feng Gao

School of Materials Sience and Engineering

Research output: Contribution to journal › Article › peer-review

4 Scopus citations

Abstract

In this paper, a non-toxic water-soluble copolymer of isobutene and maleic anhydride (Isobam) was used for gelcasting of Ba_0.5Sr_0.5TiO₃ (abbreviated as BST50) ceramics as both dispersant and gelling agent. The rheological properties and gelation behavior of BST50 suspensions have been investigated. BST50 suspension with 54 vol% solid loading and 0.1 wt% Isobam was optimized for the gelcasting process. Complex-shaped green bodies were prepared with homogeneous microstructure without large defects. BST50 samples sintered at 1500 °C were processed at a high relative density of 99.6%. The sample possessed a high dielectric tunability of 22% (30 kV/cm) and tanδ of 0.006 (1 kHz) which is decreased by 70% compared with that of dry-pressed samples. The present method has great potential in the preparation of other functional ceramics with complex shape and enhanced performance.

Original language	English
Pages (from-to)	17819-17827
Number of pages	9
Journal	Journal of Materials Science: Materials in Electronics
Volume	31
Issue number	20
DOIs	https://doi.org/10.1007/s10854-020-04336-0
State	Published - Oct 2020

Access to Document

10.1007/s10854-020-04336-0

Cite this

@article{5d2abdf5f0824aa98de90723990541ce,

title = "Enhanced dielectric properties of highly dense Ba0.5Sr0.5TiO3 ceramics via non-toxic gelcasting",

abstract = "In this paper, a non-toxic water-soluble copolymer of isobutene and maleic anhydride (Isobam) was used for gelcasting of Ba0.5Sr0.5TiO3 (abbreviated as BST50) ceramics as both dispersant and gelling agent. The rheological properties and gelation behavior of BST50 suspensions have been investigated. BST50 suspension with 54 vol% solid loading and 0.1 wt% Isobam was optimized for the gelcasting process. Complex-shaped green bodies were prepared with homogeneous microstructure without large defects. BST50 samples sintered at 1500 °C were processed at a high relative density of 99.6%. The sample possessed a high dielectric tunability of 22% (30 kV/cm) and tanδ of 0.006 (1 kHz) which is decreased by 70% compared with that of dry-pressed samples. The present method has great potential in the preparation of other functional ceramics with complex shape and enhanced performance.",

author = "Jie Xu and Shuhang Liu and Yujian Wang and Yiting Guo and Jia Zhao and Haixue Yan and Feng Gao",

note = "Publisher Copyright: {\textcopyright} 2020, Springer Science+Business Media, LLC, part of Springer Nature.",

year = "2020",

month = oct,

doi = "10.1007/s10854-020-04336-0",

language = "英语",

volume = "31",

pages = "17819--17827",

journal = "Journal of Materials Science: Materials in Electronics",

issn = "0957-4522",

publisher = "Springer New York",

number = "20",

}

TY - JOUR

T1 - Enhanced dielectric properties of highly dense Ba0.5Sr0.5TiO3 ceramics via non-toxic gelcasting

AU - Xu, Jie

AU - Liu, Shuhang

AU - Wang, Yujian

AU - Guo, Yiting

AU - Zhao, Jia

AU - Yan, Haixue

AU - Gao, Feng

PY - 2020/10

Y1 - 2020/10

N2 - In this paper, a non-toxic water-soluble copolymer of isobutene and maleic anhydride (Isobam) was used for gelcasting of Ba0.5Sr0.5TiO3 (abbreviated as BST50) ceramics as both dispersant and gelling agent. The rheological properties and gelation behavior of BST50 suspensions have been investigated. BST50 suspension with 54 vol% solid loading and 0.1 wt% Isobam was optimized for the gelcasting process. Complex-shaped green bodies were prepared with homogeneous microstructure without large defects. BST50 samples sintered at 1500 °C were processed at a high relative density of 99.6%. The sample possessed a high dielectric tunability of 22% (30 kV/cm) and tanδ of 0.006 (1 kHz) which is decreased by 70% compared with that of dry-pressed samples. The present method has great potential in the preparation of other functional ceramics with complex shape and enhanced performance.

AB - In this paper, a non-toxic water-soluble copolymer of isobutene and maleic anhydride (Isobam) was used for gelcasting of Ba0.5Sr0.5TiO3 (abbreviated as BST50) ceramics as both dispersant and gelling agent. The rheological properties and gelation behavior of BST50 suspensions have been investigated. BST50 suspension with 54 vol% solid loading and 0.1 wt% Isobam was optimized for the gelcasting process. Complex-shaped green bodies were prepared with homogeneous microstructure without large defects. BST50 samples sintered at 1500 °C were processed at a high relative density of 99.6%. The sample possessed a high dielectric tunability of 22% (30 kV/cm) and tanδ of 0.006 (1 kHz) which is decreased by 70% compared with that of dry-pressed samples. The present method has great potential in the preparation of other functional ceramics with complex shape and enhanced performance.

UR - http://www.scopus.com/inward/record.url?scp=85090165474&partnerID=8YFLogxK

U2 - 10.1007/s10854-020-04336-0

DO - 10.1007/s10854-020-04336-0

M3 - 文章

AN - SCOPUS:85090165474

SN - 0957-4522

VL - 31

SP - 17819

EP - 17827

JO - Journal of Materials Science: Materials in Electronics

JF - Journal of Materials Science: Materials in Electronics

IS - 20

ER -

Enhanced dielectric properties of highly dense Ba_0.5Sr_0.5TiO₃ ceramics via non-toxic gelcasting

Abstract

Access to Document

Other files and links

Fingerprint

Cite this