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- Title
Preparation of high-density Bi2O3 ceramics by low temperature sintering.
- Authors
Song, Jinjie; Zhu, Guisheng; Xu, Huarui; Yin, Rong; Zhao, Yunyun; Zhang, Xiuyun; Yan, Dongliang; Long, Shenfeng; Wei, Tingting
- Abstract
Bi2O3 ceramics with high density were prepared by low temperature sintering using acetic acid as the co-solvent. The effect of acetic acid concentration, pressure, temperature and holding time during sintering on the densification of Bi2O3 ceramics was investigated. The Bi2O3 ceramic with a relative density of 98.31% was obtained by low temperature sintering at 270 ℃/330 MPa for 140 min using 3 mol/L acetic acid solution. The densification mechanism for low temperature sintering Bi2O3 ceramic followed "dissolution–precipitation–growth", which is different from the densification mechanism of the traditional high-temperature sintered ceramics. The Bi2O3 ceramic with a permittivity (εr) ~ 32.2, a quality factor (Qf) ~ 16,425 GHz and a grain size ~ 4.2 μm was obtained. The study provides a new method of ceramic development by low temperature sintering.
- Subjects
LOW temperatures; CERAMICS; SPECIFIC gravity; ACETIC acid; QUALITY factor
- Publication
Journal of Materials Science: Materials in Electronics, 2020, Vol 31, Issue 7, p5214
- ISSN
0957-4522
- Publication type
Article
- DOI
10.1007/s10854-020-03081-8