Crystallization behavior and dielectric properties of BaO-ZnO-SrO-CaO-Nd2O3-TiO2-B2O3-SiO2 glass-ceramics

被引：6
作者：
Hsiang, Hsing-I [1 ]
Mei, Li-Then [1 ]
Hsi, Chi-Shiung [2 ]
Liao, Wen-Chang [1 ]
Yen, Fu-Su [1 ]
机构：
[1] Natl Cheng Kung Univ, Dept Resources Engn, Particulate Mat Res Ctr, Tainan 70101, Taiwan
[2] Natl United Univ, Dept Mat Sci & Engn, Miaoli, Taiwan
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2010年 / 502卷 / 02期
关键词：
LTCC; Glass-ceramic; Sintering; Crystallization; LOW-TEMPERATURE; KINETICS;
D O I：
10.1016/j.jallcom.2010.04.176
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The effects of heating rate on the crystallization and sintering behaviors of glass-ceramics (BaO-ZnO-SrO-CaO-Nd2O3-TiO2-B2O3-SiO2) were investigated in this study. The results showed that the onset of glass shrinkage occurred at around the glass transition temperature. The first crystalline phase, Nd2Ti4O11 was observed at around 775-800 degrees C. Fully densified glass can be obtained via glass viscous flow before the occurrence of the second crystalline phase, Nd0.66TiO3. With increasing heating rate, the glass transition temperature and crystallization temperature both shift to higher temperature. Sintering at a higher heating rate can retard the Nd0.667TiO3 crystallization of the glass, and thus improves the sintering densification via glass viscous flow during the firing process. The Ba-Zn-Sr-Ca-Nd-Ti-B-Si glass-ceramics sintered at 900 degrees C with a heating rate of 20 degrees C/min exhibited a high dielectric constant of 25 and a quality factor of about 1460, which provided a promising candidate for LTCC applications. (C) 2010 Elsevier B.V. All rights reserved.
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页码：387 / 391
页数：5
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