ePrints@IIScePrints@IISc Home | About | Browse | Latest Additions | Advanced Search | Contact | Help

Impact of �core-shell� mode of printing on properties of 3D binderjet printed zirconia-alumina based bioceramics

Barui, S and Chowdhury, S and Samajdar, R and Chakraborty, S and Gavade, M and Basu, B (2020) Impact of �core-shell� mode of printing on properties of 3D binderjet printed zirconia-alumina based bioceramics. In: Open Ceramics, 3 .

ope_cer_03_2020.pdf - Published Version

Download (4MB) | Preview
[img] Microsoft Word
1-s2.0-S2666539520300262-mmc1.docx - Published Supplemental Material

Download (1MB)
Official URL: https://doi.org/10.1016/j.oceram.2020.100026


3D binderjet printing of bioceramics remained a major challenge, and powder specific-binder development and processing strategies still follow certain �black box� approaches. In this study, for the first time, we report the efficacy of an acrylic based proprietary binder system to 3D print zirconia based bioceramics. Machine limited �core-shell� mode of binder deposition resulted in heterogeneous distribution in particle arrangement from �shell� to �core�, with higher binder saturation at the �shell� region and less saturation at the �core�. A series of post-processing strategies like �presintering � salt infiltration � phase conversion � final sintering�, post-printing binder infiltration etc. were adapted to develop 3YSZ alone or together with ZrSiO4 or Al2O3, although with limited success. Despite poor strength properties (compressive/tensile/flexural), the acceptable strength reliability with modest Weibull modulus (m �� �5�9) was obtained in post-processed ceramics. While explaining the microstructure-property correlations, the contributions of different powder modification strategies and novel processing steps (�dual powder deposition� for non-macroporous powder bed) are discussed in particular reference to the porous architecture formed in 2D space or 3D volume, as investigated using SEM or micro-computed tomography. © 2020 The Authors

Item Type: Journal Article
Publication: Open Ceramics
Publisher: Elsevier B.V.
Additional Information: The copyright for this article belongs to Authors
Department/Centre: Division of Chemical Sciences > Materials Research Centre
Division of Interdisciplinary Sciences > Centre for Biosystems Science and Engineering
Date Deposited: 18 Aug 2021 09:30
Last Modified: 18 Aug 2021 09:30
URI: http://eprints.iisc.ac.in/id/eprint/69283

Actions (login required)

View Item View Item