| Home | E-Submission | Sitemap | Login | Contact Us |  
J. Korean Ceram. Soc. > Volume 60(1); 2023 > Article
Journal of the Korean Ceramic Society 2023;60(1): 141-154.
doi: https://doi.org/10.1007/s43207-022-00194-0
Effects of sintering temperature and zirconia content on the mechanical and microstructural properties of MgO, TiO2 and CeO2 doped alumina–zirconia (ZTA) ceramic
Md. Al-Amin1,2, Homayra Tabassum Mumu3, Saugata Sarker3, Md. Zahangir Alam2, M. A. Gafur1
1Pilot Plant and Process Development Centre, Bangladesh Council of Scientific and Industrial Research, Dhaka 1205, Bangladesh
2Department of Applied Chemistry and Chemical Engineering, University of Dhaka, Dhaka 1000, Bangladesh
3Department of Materials and Metallurgical Engineering, Bangladesh University of Engineering and Technology, Dhaka 1000, Bangladesh
Correspondence  M. A. Gafur ,Email: dr.abdul.gafur999@gmail.com
Received: October 16, 2021; Revised: January 15, 2022   Accepted: February 12, 2022.  Published online: March 9, 2022.
The effects of sintering temperature and ZrO2 addition on the hardness and fracture toughness of zirconia toughened alumina (ZTA)–MgO–TiO2 composite was investigated. 5 wt.% CeO2 was added to ZTA containing 5 wt.% of MgO and 5 wt.% of TiO2. Two sets of composition A5ZMTC and A15ZMTC were used consisting of 5 wt.% and 15 wt.% of 3YSZ, respectively, to analyze the effect of CeO2 on the base composition. The powders were pressed into pellets and sintered at different temperatures of 1450 °C, 1500 °C, 1600 °C and 1650 °C for 3 h. Density, hardness and fracture toughness increased to a maximum value and then decreased. From the XRD analysis, Ce0.7Zr0.3O2 in only A5ZMTC and CeAl 11O18 in only A15ZMTC are evident. The highest fracture toughness of 12.03 MPam1/2 (Casellas) was achieved at 1500 °C in A15ZMTC and maximum hardness of 14.15 GPa was obtained in A5ZMTC sintered at 1450 °C.
Key words: Zirconia toughened alumina (ZTA) · Advanced ceramics · Fracture toughness · Load-bearing ceramics · Inclusion
Editorial Office
Meorijae Bldg., Suite # 403, 76, Bangbae-ro, Seocho-gu, Seoul 06704, Korea
TEL: +82-2-584-0185   FAX: +82-2-586-4582   E-mail: ceramic@kcers.or.kr
About |  Browse Articles |  Current Issue |  For Authors and Reviewers
Copyright © The Korean Ceramic Society.                      Developed in M2PI