期刊
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
卷 35, 期 8, 页码 2313-2320出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.jeurceramsoc.2015.02.002
关键词
Silicates; Tape casting; Rheology; Microstructure; Dielectric properties
资金
- Department of Science and Technology, New Delhi
- Council of Scientific and Industrial Research, New Delhi
Glass free Ei(4)(SiO4)(3) ceramic tapes were prepared by non-aqueous solvent based tape casting technique. A higher powder loading above 65 wt.% was achieved in a silicate system through a judicious selection of suitable dispersants and binder. The amount of dispersant was optimized at 1.0 wt.% based on viscosity and sedimentation analysis. The surface morphology and mechanical strength of the green tapes were investigated. The as-prepared green tape of thickness 70 mu m has an average surface roughness of 320 nm and a tensile strength of 0.37 MPa. The microwave dielectric properties of the green tape (epsilon(r) = 6.2 and tan delta = 0.0390) and sintered tape (epsilon(r) = 13.3 and tan delta = 0.0007) were measured at 15 GHz by using SPDR technique. (C) 2015 Elsevier Ltd. All rights reserved.
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