| Autor: |
Ivanchenko, S.E., Dulina, I.O., Nikulin, A.G., Kyrpal, R.O., Umerova, S.O., Ragulya, A.V. |
| Jazyk: |
angličtina |
| Rok vydání: |
2013 |
| Předmět: |
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| Popis: |
Tape casting slips with different composition have been prepared using BaTiO3 nanopowder with a particle size in range of 20-25 nm. Ethanol, low polar organic solvent and menton were used as the sol-vents. Polyvinylbutyral and Butvar were used as binders. Dibutyl phthalate and polyethylene gly-col where used as plasticizers. Rheological properties of BaTiO3 suspensions were carried out on a rotary rhe-ometer. Casted tapes have been characterized by optical microscopy and optical profilome-try. Suspensions for tape casting characterized by pseudoplastic and pseudoplastic-dilatancy nature of the flow. The thick-ness of thin ceramic tapes depended on the height of doctor blade gap, the speed of the carrier and the vis-cosity of the suspension along with it’s rheological characteristics. Thickness of ceramic green tape in a greater extent determinated by the casting parameters, composition of the suspension and its viscosity. The average tape thickness was 2.5 μm for low viscosity slips and near 5 μm for high viscosity slips with same blade gap in 50 μm. Roughness of tape depended on type of used solvent and its polarity and varies between approximately 500 nm for low polar solvent up to 1 μm for polar one. When you are citing the document, use the following link http://essuir.sumdu.edu.ua/handle/123456789/35213 |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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