Abstract
The effects of alkali oxides (Na2O and K2O) addition on both the sintering behavior and dielectric properties of Ca-Al-B-Si-O glass/Al2O3 composites were investigated by Fourier transform infrared spectroscopy (FTIR), differential scanning calorimeter (DSC), X-ray diffractometry (XRD) and scanning electron microscopy (SEM). The results show that the increasing amount of alkali oxides in the glass causes the decrease of [SiO4], which results in the decrease of the continuity of glass network, and leads to the decrease of the softening temperature T f of the samples and the increasing trend of crystallization. And that deduces corresponding rise of densification, dielectric constant, dielectric loss of the low temperature co-fired ceramic (LTCC) materials and the decrease of its thermal conductivity. By contrast, the borosilicate glass/Al2O3 composites with 1.5% (mass fraction) alkali oxides sintered at 875 °C for 30 min exhibit better properties of a bulk density of 2.79 g/cm3, a porosity of 0.48%, a λ value of 2.28 W/(m·K), a ɛ r value of 7.82 and a tan δ value of 9.1×10−4 (measured at 10 MHz).
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KEMETHMÜLLER S, HAGYMASI M, STIEGELSCHMITT A, and ROOSEN A. Viscous flow as driving force for the densification of low-temperature co-fired ceramics [J]. J Am Ceram Soc, 2007, 90(1): 64–70.
ZHU Hai-kui, ZHOU Hong-qing, LIU Min, WEI Peng-fei, XU Gui-jun, NING Ge. Microstructure and microwave dielectric characteristics of CaO-B2O3-SiO2 glass ceramics [J]. Journal of Material Science: Materials in electronics, 2009(20): 1135–1139.
ZHANG Yang-fei, BAI Shu-lin, MIAO Min, JIN Yu-feng. Microstructure and mechanical properties of an alumina-glass low temperature co-fired ceramic [J]. Journal of the European Ceramic Society, 2009 (29): 1077–1082.
IMANAKA Y. Multilayered low temperature co-fired ceramics (LTCC) technology [M]. New York: Springer, 2005.
SEO Y J, JUNG J H, CHO Y S. Influences of particle size of alumina filler in an LTCC system [J]. J Am Ceram Soc, 2007, 90(2): 649–652.
EBERSTEIN M, RABE T, SCHILLER W A. Influence of the glass phase on densification, microstructure, and properties of low-temperature co-fired ceramics [J]. J Appl Technol, 2006, 3(6): 428–436.
ZHANG Qing-xue, LI Wen-lan, ZHUANG Han-rui. Sintering at low temperature and performance for AlN/glass composites [J]. Chinese Journal of Materials Research, 2003, 17(1): 79–82.
MULLER R, MESZAROS R, PEPLINSKI B, REINSCH S, EBERSTEIN M, SCHILLER W A. Dissolution of alumina, sintering, and crystallization in glass ceramic composites for LTCC [J]. J Am Ceram Soc, 2009, 92(8): 1703–1708.
CHO Y S, JO Y H, CHOI H R, SHIN D W, CHUNG K W. Influences of alkali oxides on crystallization and dielectric properties of anorthite-based low temperature dielectrics [J]. Journal of the Ceramic Society of Japan, 2008, 116(7): 825–828.
ZHANG Q L, YANG H, ZOU J L, WANG H P. Sintering and microwave dielectric properties of LTCC-zinc titanate multilayers [J]. Materials Letters, 2005, 59: 880–884.
KASHIF I, SOLIMAN A A, FAROUK H, SHORPAGY M E, SANAD A M. Effect of copper addition on density and magnetic susceptibility of lithium borate glasses [J]. Physical B, 2008 (493): 3903–3906.
RADA S, CULEA M, CULEA E. Structure of TeO2·B2O3 glasses inferred from infrared spectroscopy and DFT calculations [J]. Journal of Non-crystalline Solids, 2008, 354(52/53/54): 5491–5495.
El-Egili K. Infrared studies of Na2O-B2O3-SiO2 and Al2O3-Na2O-B2O3-SiO2 glasses [J]. Physical B, 2003 (325): 340–348.
LIU Shu-jiang, LU An-xian, TANG Xiao-dong, HE Shao-bo. Influence of addition of B2O3 on properties of Yb3+-doped phosphate laser glass [J]. Journal of Central South University of Technology, 2006, 13(5): 468–472.
HE Feng, CHENG Jin-shu, DENG Da-wei, WANG Jun. Structure of Bi2O3-ZnO-B2O3 system low-melting sealing glass [J]. Journal of Central South University of Technology, 2010 (17): 257–262.
CHEN Zhen-xia, QUAN Jian, ZHONG Yun-ming. Effect of A12O3 on structure and the thermal properties of low-melting borosilicate glass [J]. J Journal of Wuhan University of Technology, 20 2009 (22) 2629. (in Chinese)
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Foundation item: Project(2007AA03Z0455) supported by the National High Technology Research and Development Program (“863” Program) of China; Project(BE2010194) supported by Science & Technology Pillar Program of Jiangsu in China; Project(BE2009168) supported by Science & Technology Pillar Program of Jiangsu in China; Project supported by the Priority Academic Program Development (PAPD) of Jiangsu Higher Education Institutions; Project(KF201103) supported by State Key Laboratory of New Ceramic and Fine Processing Tsinghua University; Project(CXZZ12_0415) supported by Innovation Foundation for Graduate Students of Jiangsu Province, China
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Liu, M., Zhou, Hq., Zhu, Hk. et al. Microstructure and dielectric properties of Ca-Al-B-Si-O glass/Al2O3 composites with various alkali oxides contents. J. Cent. South Univ. 19, 2733–2739 (2012). https://doi.org/10.1007/s11771-012-1334-5
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DOI: https://doi.org/10.1007/s11771-012-1334-5