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Study on the Rheological Behaviors of Ba_2Ti_9O_(20) Ceramic Slurry and Tape Casting

Lei Ma

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Abstract

Ba2Ti9O20 powder was synthesized by solid state reaction method using BaCO3B and TiO2 as raw materials.The Ba2Ti9O20 powder mixed with appropriate dispersant,agglomerant and plasticizer was used to make the slurry for tape casting.The effect of the matching and type of solvents,the amount and type of dispersant on the properties of the rheological behavior were investigated.The results show that the rheological behaviors are well with slurry viscosity of 9.1Pa.s when plasticizer(polyethylene glycol) is 5wt%,agglomerant(Polyvinylbutyral) is 5wt%,dispersing agent(castor oil) is 0.5wt%,solid ceramic powders is 54wt% and combined solvents(volume ratio is 75:25) is isopropyl alcohol-toluene.

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What this paper is about

Ba2Ti9O20 powder was synthesized by solid state reaction method using BaCO3B and TiO2 as raw materials.The Ba2Ti9O20 powder mixed with appropriate dispersant,agglomerant and plasticizer was used to make the slurry for tape casting.The effect of the matching and type of solvents,the amount and type of dispersant on the properties of the rheological behavior were investigated.The results show that the rheological behaviors are well with slurry viscosity of 9.1Pa.s when plasticizer(polyethylene glycol) is 5wt%,agglomerant(Polyvinylbutyral) is 5wt%,dispersing agent(castor oil) is 0.5wt%,solid ceramic powders is 54wt% and combined solvents(volume ratio is 75:25) is isopropyl alcohol-toluene.

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Available abstract

Ba2Ti9O20 powder was synthesized by solid state reaction method using BaCO3B and TiO2 as raw materials.The Ba2Ti9O20 powder mixed with appropriate dispersant,agglomerant and plasticizer was used to make the slurry for tape casting.The effect of the matching and type of solvents,the amount and type of dispersant on the properties of the rheological behavior were investigated.The results show that the rheological behaviors are well with slurry viscosity of 9.1Pa.s when plasticizer(polyethylene glycol) is 5wt%,agglomerant(Polyvinylbutyral) is 5wt%,dispersing agent(castor oil) is 0.5wt%,solid ceramic powders is 54wt% and combined solvents(volume ratio is 75:25) is isopropyl alcohol-toluene.

Key concepts: Dispersant, Materials science, Plasticizer, Rheology, Slurry, Tape casting, Ceramic, Casting

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Study on the Rheological Behaviors of Ba_2Ti_9O_(20) Ceramic Slurry and Tape Casting — Research Paper | ScholarLens