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Refiring Performance of Calcium Aluminoborosilicate‐Based Dielectrics
Author(s) -
Choi Ik Jin,
Park Jae Gwan,
Cho Yong Soo
Publication year - 2008
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1551-2916.2008.02478.x
Subject(s) - dielectric , materials science , filler (materials) , crystallization , composite material , calcium , phase (matter) , mineralogy , chemical engineering , chemistry , metallurgy , optoelectronics , organic chemistry , engineering
Two dielectric materials consisting of a zinc calcium aluminoborosilicate glass with either an Al 2 O 3 or a CaTiO 3 filler were selected to investigate the sensitivity of refirings at a fixed temperature of 850°C to the final physical and dielectric performance. The property changes with refirings depended on the type of filler material and the number of refirings. For example, crystallization of the unexpected ZnAl 2 O 4 phase was found to progress further on increasing the number of refirings in the case of the Al 2 O 3 filler sample. The five refirings of the sample resulted in a decrease of the dielectric constant from 8.46 to 8.06 at 1 MHz. The case of the CaTiO 3 filler can be highlighted with the opposite increasing effect of the dielectric constant as the crystalline CaTiSiO 5 phase evolved further with refirings.