THE 20TH NATIONAL HIGH-TECH CERAMICS ANNUAL CONFERENCE |
|
|
|
|
|
Low Temperature Sintering and Microwave Dielectric Properties of SiO2-BPO4/LMZBS Glass Ceramics |
LIU He, FU Renli, HE Qinjiang, LI Guojun, WANG He
|
College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016 |
|
|
Abstract xSiO2-(1-x)BPO4 microwave dielectric ceramics had been prepared by solid-state reaction. The effects of LMZBS glass sintering aid on the phase composition, microstructure and microwave dielectric properties of ceramics was studied. The results show that the addition of LMZBS glass could lower the sintering temperature of SiO2-BPO4 glass ceramics to 900 ℃, and the best dielectric properties of the ceramics(i.e.,εr=4.0, Q×f=22 600 GHz, τf=-22 ×10-6/℃) are obtained when the mass ratio of silicon and boron-phosphors is 70:30 and the addition of LMZBS is 4wt% at 900 ℃ for 2 h. Moreover, the presence of glass phase in the sintering process inhibited boron ions volatilization, which improved the microstructure and ensured excellent co-firing with Ag electrode. In addition, the introduction of CaTiO3 can effectively adjust the τf of 70SiO2-30BPO4 ceramics. The ceramics possess optimum dielectric properties (εr=4.4, Q×f=17 800 GHz, τf=6×10-6/℃) when the addition of CaTiO3 is 5wt% and sintered at 900 ℃, which is a promised candidate for LTCC application.
|
Published: 31 July 2019
|
|
Fund:This work was financially supported by the Key Research and Development Program of Jiangsu Province (BE2016050) and Superiority Discipline Construction Project of Jiangsu Universities. |
About author:: He Liureceived his M.S. degree in March 2019 from Nanjing University of Aeronautics and Astronautics in engineering. At present, the main research field is microwave dielectric ceramics. Renli Fuis a professor and doctoral supervisor of Nanjing University of Aeronautics and Astronautics. He has been engaged in the teaching and research of materials science and engineering for a long time. He has carried out in-depth research in the fields of microelectronic packaging substrate and packaging technology, new fluo-rescent materials and spectral control for white LED, microwave dielectric ceramic materials and radio frequency electronic labels, substrate materials for power electronic devices and heat dissipation technology. He has published more than 120 academic papers, authorized 8 national invention patents, 1 utility model patent, and received 2 ministerial and provincial level science and technology award. |
|
|
[1] |
Tan X H, Zhou H F, Huan G J, et al. Journal of Electronic Materials, 2017, 46(10), 5950.
|
[2] |
Ohashi M, Ogawa H, Kan A, et al. Journal of the European Ceramic Society, 2005, 25(12), 2877.
|
[3] |
Lai Y M, Hong C Y, Jin L H, et al. Ceramics International, 2017,43, 16167.
|
[4] |
Hu J, Zhang T Y, Li Z, et al. Materials Review, 2017,31(S2), 107(in Chinese).胡杰, 张天宇, 李真, 等. 材料导报, 2017, 31(专辑30), 107.
|
[5] |
Hu C X, Liu P. Journal of Alloys & Compounds, 2013, 559(5), 129.
|
[6] |
Xia G B, He L T, Yang D A. Journal of Alloys & Compounds, 2012, 53(1), 70.
|
[7] |
Li B, Yue Z X, Ji Z, et al. Materials Letters, 2002, 54(1), 25.
|
[8] |
Chen G H, Liu X Y. Journal of Alloys & Compounds, 2007, 431(1), 282.
|
[9] |
Zhu H Y, Fu R L, Agathopoulos Simeon, et al. Ceramics International, 2018, 44, 10147.
|
[10] |
Li B, Yu Z X, Zhou J, et al. Journal of Inorganic Materials, 2001, 16(5),974(in Chinese).李勃, 岳振星, 周济,等. 无机材料学报, 2001, 16(5),974.
|
[11] |
Bian J J, Xie Y R, et al. Journal of the European Ceramic Society, 2018, 38(7), 2747.
|
[12] |
Baret G, Baret G. Journal of the Electrochemical Society, 1991, 138(9),2830.
|
[13] |
Li H K, Zeng B, Yang X F, et al. Inorganic Chemicals Industry,2014, 46(1),31(in Chinese).李海昆, 曾波, 杨学芬, 等. 无机盐工业, 2014, 46(1),31.
|
[14] |
Huang C L, Wang M H. Materials Research Bulletin, 2001, 36(15),2677.
|
|
|
|