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Rheological study and printability investigation of titania inks for Direct Ink Writing process

Dolganov, Aleksei; Bishop, Matthew T.; Chen, George Z.; Hu, Di

Authors

Aleksei Dolganov

Matthew T. Bishop

Di Hu



Abstract

© 2021 Elsevier Ltd and Techna Group S.r.l. Titanium dioxide is widely used in numerous industries and with the newly developed titanium manufacturing technique, referred to as the Near-net-shape Electrochemical Metallisation (NEM) Process, the rapid and precise production of titanium dioxide components is highly sought-after. This manuscript presents the rheological investigation and extrudability tests of titania inks, to establish the improved production of titanium dioxide components via Direct Ink Writing. The extrudability tests indicated that despite an unfavourable increase in viscosity during the high shear rates (dilatancy peaks), the best-performing ink had a weight ratio of 1:0.8:0.1 TiO2:H2O:PEG, and the dilatancy peaks were smoothed out with the addition of 0.1 wt ratio of oleic acid to the ink, dramatically improving the quality of the product. To further improve the green bodies a new printing approach was also introduced, removing the necessity for specialised printing bed, by printing a removable support into the green body and allowing for drying without any cracks and warping.

Citation

Dolganov, A., Bishop, M. T., Chen, G. Z., & Hu, D. (2021). Rheological study and printability investigation of titania inks for Direct Ink Writing process. Ceramics International, https://doi.org/10.1016/j.ceramint.2021.01.045

Journal Article Type Article
Acceptance Date Jan 5, 2021
Online Publication Date Jan 11, 2021
Publication Date Jan 11, 2021
Deposit Date Jan 15, 2021
Publicly Available Date Jan 15, 2021
Journal Ceramics International
Print ISSN 0272-8842
Publisher Elsevier
Peer Reviewed Peer Reviewed
DOI https://doi.org/10.1016/j.ceramint.2021.01.045
Keywords Process Chemistry and Technology; Materials Chemistry; Electronic, Optical and Magnetic Materials; Surfaces, Coatings and Films; Ceramics and Composites
Public URL https://nottingham-repository.worktribe.com/output/5228774
Publisher URL https://www.sciencedirect.com/science/article/pii/S0272884221000663
Additional Information Dolganov, A., Bishop, M. T., Chen, G. Z., & Hu, D. (2021). Rheological study and printability investigation of titania inks for Direct Ink Writing process. Ceramics International. https://doi.org/10.1016/j.ceramint.2021.01.045

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