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Effects of various fillers on sintering, microstructures and properties of Ca-Ba-Al-B-Si-O glass/ceramic composites

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Abstract

Low-temperature sintering and properties of LTCC (low temperature co-fired ceramics) materials based on CaO-BaO-Al2O3-B2O3-SiO2 glass and various fillers such as Al2O3, silica glass, christobalite, AlN, ZrO2, MgO·SiO2, TiO2 were investigated. The results show that densification, crystallization, microstructures and dielectric properties of the composites are found to strongly depend on the type of filler. The densification process of glass/ceramic composites with various fillers is mainly from 600 °C to 925 °C, and the initial compacting temperature of samples is 600 °C. The initial rapid densification of samples starts at its glass softening temperature. LTCC compositions containing Al2O3, silica glass, AlN and MgO·SiO2 fillers start to have the crystallization peaks at 890, 903, 869 and 844 °C, respectively. The crystallization peaks are believed as correlated to the crystallization of CaAl2SiO8, β-SiO2, Ca2Al2SiO7 and β-SiO2. The composite ceramic with Al2O3, silica glass and TiO2 ceramic have a better dense structure and better smooth fracture surface. Sample for Al2O3 has the lowest dielectric loss tanδ value of 0.00091, whereas the sample for MgO·SiO2 has the highest dielectric loss tanδ value of 0.02576. The sample for TiO2 has the highest dielectric constant value of 14.46, whereas the sample for AlN has the lowest dielectric constant value of 4.61.

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Authors and Affiliations

  1. College of Materials Science and Engineering, Nanjing University of Technology, Nanjing, 210009, China

    Ming Liu  (刘明), Hong-qing Zhou  (周洪庆), Min Liu  (刘敏) & Hai-kui Zhu  (朱海奎)

  2. Department of Materials Science and Engineering, Luoyang Institute of Science and Technology, Luoyang, 471023, China

    Ming Liu  (刘明)

  3. State Key Laboratory of Materials-Oriented Chemical Engineering (College of Materials Science and Engineering, Nanjing University of Technology), Nanjing, 210009, China

    Hong-qing Zhou  (周洪庆)

  4. State Key Laboratory of New Ceramic and Fine Processing (Tsinghua University), Beijing, 100084, China

    Zhen-xing Yue  (岳振星)

Authors
  1. Ming Liu  (刘明)
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  2. Hong-qing Zhou  (周洪庆)
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  3. Min Liu  (刘敏)
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  4. Zhen-xing Yue  (岳振星)
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  5. Hai-kui Zhu  (朱海奎)
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Corresponding author

Correspondence to Hong-qing Zhou  (周洪庆).

Additional information

Foundation item: Project supported by the Priority Academic Program Development (PAPD) of Jiangsu Higher Education Institutions China; Project(CXZZ12_0415) supported by Innovation Foundation for Graduate Students of Jiangsu Province China; Project(IRT1146) supported by Changjiang Scholars and Innovative Research Team in University (PCSIRT), China

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Liu, M., Zhou, Hq., Liu, M. et al. Effects of various fillers on sintering, microstructures and properties of Ca-Ba-Al-B-Si-O glass/ceramic composites. J. Cent. South Univ. 21, 843–848 (2014). https://doi.org/10.1007/s11771-014-2008-2

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  • DOI: https://doi.org/10.1007/s11771-014-2008-2

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