Study on properties of CaO-SiO{sub 2}-B{sub 2}O{sub 3} system glass-ceramic
- College of Material Science and Engineering, Nanjing University of Technology, Nanjing 210009, Jiangsu (China)
Low temperature co-fired ceramic (LTCC) is prepared by sintering a glass selected from CaO-SiO{sub 2}-B{sub 2}O{sub 3} system, and its sintered bodies are characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS). It is found that the optimal sintering temperature for this glass-ceramic is 820 deg. C for 15 min, and the major phases of this material are CaSiO{sub 3}, CaB{sub 2}O{sub 4} and SiO{sub 2}. The glass-ceramic possesses excellent dielectric properties: {epsilon} {sub r} = 6.5, tan {delta} < 2 x 10{sup -3} at 10 MHz, temperature coefficient of dielectric constant about -51 x 10{sup -6} deg. C{sup -1} and coefficient of thermal expansion about 8 x 10{sup -6} deg. C{sup -1} at 20-400 deg. C. Thus, this material is supposed to be suitable for the tape casting process and be compatible with Ag electrode, which could be used as the LTCC materials for the application in wireless communications.
- OSTI ID:
- 21000656
- Journal Information:
- Materials Research Bulletin, Vol. 42, Issue 6; Other Information: DOI: 10.1016/j.materresbull.2006.09.005; PII: S0025-5408(06)00367-9; Copyright (c) 2006 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved; Country of input: International Atomic Energy Agency (IAEA); ISSN 0025-5408
- Country of Publication:
- United States
- Language:
- English
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