Relationship between microstructure and fracture toughness in B2O3-doped 8YSZ ceramics Online publication date: Mon, 24-May-2021
by Bülent Aktaş
International Journal of Microstructure and Materials Properties (IJMMP), Vol. 15, No. 4, 2020
Abstract: This study aims to increase the fracture toughness of 8 mol.% yttria-stabilised cubic zirconia (8YSZ) at room temperature owing to the addition of boron oxide (B2O3). Therefore, in this study, the effect of B2O3 addition on sinterability and mechanical properties of 8YSZ was investigated using Micro-Vickers hardness tester and scanning electron microscope (SEM). B2O3-doped 8YSZ samples were sintered at different temperatures (1,300-1,500°C). A relative density of approximately 99% was obtained at 1,500°C in the B2O3-doped samples. While the B2O3 addition at 1 wt.% content caused a decrease in the grain size of the 8YSZ, and then when the content was > 1 wt.%, it increased. Furthermore, the mechanical properties results showed that fracture toughness of 8YSZ increased with B2O3 addition, and the hardness decreased with B2O3 addition. Thus, it was found that the fracture toughness of 8YSZ could be improved by B2O3 addition. [Received: 6 December 2019; Accepted: 11 May 2020]
Existing subscribers:
Go to Inderscience Online Journals to access the Full Text of this article.
If you are not a subscriber and you just want to read the full contents of this article, buy online access here.Complimentary Subscribers, Editors or Members of the Editorial Board of the International Journal of Microstructure and Materials Properties (IJMMP):
Login with your Inderscience username and password:
Want to subscribe?
A subscription gives you complete access to all articles in the current issue, as well as to all articles in the previous three years (where applicable). See our Orders page to subscribe.
If you still need assistance, please email subs@inderscience.com
Our Blog 
Follow us on Twitter 
Visit us on Facebook