Microstructural and mechanical behaviours of Y-TZP prepared via slip-casting and fused deposition modelling (FDM)

Constance L. Gnanasagaran, Karthikeyan Ramachandran, Nashrah Hani Jamadon, Vishaal Harikrishna Kumar, Andanastuti Muchtar, Ashwath Pazhani, Beenish Ayaz

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)
44 Downloads (Pure)

Abstract

This paper reports the microstructural characteristics and mechanical properties of yttria-stabilized zirconia prepared via fused deposition modelling and slip casting. X-Ray Diffraction peaks indicated that yttria-stabilized zirconia crystallized in tetragonal structure for both slip casted(SC) and fused deposition modelled(FDM) samples. Further, scanning electron microscopy of slip casted sample showcased closely packed structure with fine grains and an average grain size of ∼65 nm whilst fused deposition modelled samples showcased non-homogeneous pores with ∼20 nm grain size. Average relative density of slip casted samples was ∼99.4 % while that of fused deposition modelled sample exhibited ∼96.2 %. The Vickers Hardness of slip casted (∼15.26 ± 0.4 GPa) was ∼10 % higher than the fused deposition modelled samples (∼13.79 ± 0.3 GPa). Likewise, indentation fracture toughness of slip casted (5.78 ± 0.5 MPa m1/2) was 14 % higher than fused deposition modelled samples which could have been due to the change in grain size as well as porosity of the ceramics. Compressive strength of the fused deposition modelled samples was 32 % less than slip casted samples (∼510 ± 10 MPa) due to its non-homogenous pores which led to weakening van der Waals force of attraction.
Original languageEnglish
Article numbere21705
Number of pages10
JournalHeliyon
Volume9
Issue number11
Early online date29 Oct 2023
DOIs
Publication statusPublished - Nov 2023

Bibliographical note

© 2023 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY license
(http://creativecommons.org/licenses/by/4.0/).

Funder

This research was funded by First Kickstarter Grant (P2186-133) by Kingston University London.

Keywords

  • Fused deposition modelling
  • Slip casting
  • Vickers hardness and indentation fracture toughness
  • Yttria-stabilized zirconia

ASJC Scopus subject areas

  • General

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