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Pietrzak, Emilia
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Publications (7/7 displayed)
- 2018Dense alumina ceramics obtained by gelcasting and cold isostatic pressing with the use of 2-carboxyethyl acrylatecitations
- 2018Diacryloyl derivative of mannitol - synthesis and application in gelcasting of Al2O3-ZrO2 compositescitations
- 2018Copolymers dispersions designed to shaping of ceramic materials - Investigations of glass transition temperature, thermal stability and decomposition of water-thinnable binderscitations
- 2017Colloidal processing of Al2O3 and BST materials - investigations of thermal stability and decomposition of green bodiescitations
- 20162-carboxyethyl acrylate as a new monomer preventing negative effect of oxygen inhibition in gelcasting of aluminacitations
- 2016Impulse excitation technique IET as a non-destructive method for determining changes during gelcasting processcitations
- 2015Tunable ceramic-polymer composites for electronic applications
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article
Dense alumina ceramics obtained by gelcasting and cold isostatic pressing with the use of 2-carboxyethyl acrylate
Abstract
In ceramic forming techniques high particles packing can provide better properties of the final ceramic products. The high quality of the material coupled with the shape complexity of the ceramic product is still challenging. The aim of this work was the optimization and preparation of the ceramic samples based on two alumina powders of different particle size (AA05: 0.5 µm and TM-DAR: 0.15 µm). Firstly, ceramic suspensions of 50vol.% solid loading and the volumetric ratio of AA05 to TM-DAR 1:1,2:1, 3:1, 4:1, respectively have been prepared. The 2-carboxyethyl acrylate was applied as the new monomer limiting the negative effect of oxygen inhibition. Additionally, the cold isostatic pressing (CIP) was used in order to increase relative density of green bodies. The results of presented research have shown that samples with the ratio of AA05 to TM-DAR 2:1 were characterized by the highest green density (62%). Moreover, CIP process proved to be effective and increased the density of green bodies from 62% to 67%. The pore size distribution of the green bodies has been measured. Samples were sintered at different conditions (1400°C, 1450°C and 1500°C for 1h and 1300°C, 1400°C, 1450°C and 1500°C for 5h).