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Microstructure Modifications and Sintering Mechanism of B a 0.55 S r 0.4 C a 0.05 T i O 3 Ceramics Containing Different M g O Additive for LTCC Application
Author(s) -
Wang Dahao,
Li Xiaolei,
Jia Qianqian,
Zhou Yugui,
Ji Huiming,
Dai Yejing
Publication year - 2013
Publication title -
international journal of applied ceramic technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.4
H-Index - 57
eISSN - 1744-7402
pISSN - 1546-542X
DOI - 10.1111/ijac.12111
Subject(s) - materials science , sintering , ceramic , microstructure , wetting , dielectric , mineralogy , metallurgy , chemical engineering , composite material , optoelectronics , chemistry , engineering
Ferroelectric B a 0.55 S r 0.4 C a 0.05 T i O 3 ( BSCT ) ceramics with nano‐ M g O additive have been prepared by typical electrical ceramic technology sintered at 950°C for 2 h. The influence of the additive content on the sintering behaviors of BSCT ceramics is investigated. The results show that the interactions of M g O with BSCT and B 2 O 3 ‐ L i 2 O liquid sintering additive help to form wetting boundaries for accelerating densification process, promote the grain growth of BSCT ceramic. The BSCT ceramic with 20 wt% nano‐ M g O possesses uniform microstructure, high densification, and superior dielectric properties. The modification mechanism of nano‐ M g O on BSCT ceramic is summarized as “ M g O assisted wetting sintering model.”