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Dispersion characteristics of sol-gel derived (Ba0.2Pb0.8) TiO3 as a function of PMMA

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Abstract

The suspension behaviour of sol-gel derived (Ba0.2Pb0.8) TiO3 powder, was observed as a function of PMMA content (0 to 3%). The suspension shows an optimum dispersion in 70% benzene/30% hexane. The effect of PMMA concentration on the sedimentation density in 70% benzene/30% hexane shows the best dispersion at about 2% PMMA concentration. The sol-gel specimens derived from a well-dispersed suspension with 2% PMMA show a higher dielectric constant at the Curie temperature and a higher density than those in other PMMA concentrations. These results can be explained by the increase in sinterability due to the stable suspension behaviour.

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Authors and Affiliations

  1. Department of Ceramic Engineering, Yonsei University, Seoul, Korea

    Kyung Hwa Jo & Ki Hyun Yoon

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  1. Kyung Hwa Jo
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  2. Ki Hyun Yoon
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Jo, K.H., Yoon, K.H. Dispersion characteristics of sol-gel derived (Ba0.2Pb0.8) TiO3 as a function of PMMA. J Mater Sci 26, 809–813 (1991). https://doi.org/10.1007/BF00588320

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  • DOI: https://doi.org/10.1007/BF00588320

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