Effects of Excess Barium Ions on Aqueous Barium Titanate Tape Properties |
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Authors: | Dang-Hyok Yoon Burtrand I Lee |
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Affiliation: | School of Materials Science and Engineering, Olin Hall, 340971, Clemson University, Clemson, South Carolina 29634-0971 |
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Abstract: | The effects of excess free barium ions in aqueous barium titanate slip on the resulting BaTiO3 tape properties were investigated in terms of the slip behavior, green/sintered tape density and morphology, and dielectric properties. The excess free barium ions expressed by means of the Ba/Ti ratio adversely affected most tape properties. Increase in the slip viscosity, green porosity, and agglomeration along with a decrease in mechanical properties and green/sintered density were found with the increase in the Ba/Ti ratio. However, dielectric permittivity was increased with increase in the Ba/Ti ratio. An effort was made to correlate these phenomena with Ba2+ leaching in water for realistic multilayer ceramic capacitor applications. |
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Keywords: | barium barium titanate tape casting |
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