Article
Version 1
This version is not peer-reviewed
Effect of Grain Size on Hardness, Bending Strength and Indentation Toughness of Multi-Doped Zirconia Ceramics
Version 1
: Received: 2 December 2018 / Approved: 4 December 2018 / Online: 4 December 2018 (08:37:17 CET)
How to cite: Hoo, Y.; Shi, Y.; Lu, W.. Effect of Grain Size on Hardness, Bending Strength and Indentation Toughness of Multi-Doped Zirconia Ceramics. Preprints 2018, 2018120045 (doi: 10.20944/preprints201812.0045.v1). Hoo, Y.; Shi, Y.; Lu, W.. Effect of Grain Size on Hardness, Bending Strength and Indentation Toughness of Multi-Doped Zirconia Ceramics. Preprints 2018, 2018120045 (doi: 10.20944/preprints201812.0045.v1).
Abstract
Partially stabilized zirconia (PSZ) is a promising material with superior combination properties in a wide range of industries. In this study, the effect of grain size on the mechanical properties such as hardness, bending strength and fracture toughness (named as ‘indentation toughness’ in this study) was investigated. The multi-doped zirconia ceramics were prepared by powder processing and pressure-less sintered following four sintering schedules. The measured mechanical properties results show that the polymorph structure sintered at a higher temperature has a lower bending strength and hardness. But 300% more indentation toughness (30.54 Kg/mm) of samples sintered at 1600 °C +1150 °C relative to others was estimated due to the grain size effect by our suggested equation. By contrast, the fracture toughness was calculated with an existing method. The results showed that similar trends were obtained. It appeared to be a novel method for evaluating the toughness of partially stabilized zirconia ceramics with micron grains based on the size effect.
Subject Areas
indentation toughness, partially stabilized zirconia, microhardness
Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Readers' Comments and Ratings (0)
Send a private comment to the author(s)