On the effect of sintering temperature on the fracture energy of an Alumina-Mullite-Zirconia castable at 600?C

Author(s)

Vargas, R. ^{[1, 2]} ; Pinelli, X. ^[2] ; Smaniotto, B. ^[2] ; Hild, F. ^[2] ; Canto, R. B. ^{[3, 1]}

Affiliation

^[1] Univ Fed Sao Carlos, Grad Program Mat Sci & Engn PPGCEM, BR-13565905 Sao Carlos, SP - Brazil

^[2] Univ Paris Saclay, ENS Paris Saclay, CNRS, LMT Lab Mecan & Technol, F-91190 Gif Sur Yvette - France

^[3] Fed Univ Sao Carlos UFSCar, Dept Mat Engn DEMa, BR-13565905 Sao Carlos, SP - Brazil

• Document type: Journal article
• Source: Journal of the European Ceramic Society; v. 41, n. 7, p. 4406-4418, JUL 2021.
• Web of Science Citations: 3

Abstract

Refractory castables are utilized in hazardous environments and thus their reliability should be accurately evaluated to avoid incidents. This work aims to measure the fracture energy of a high-alumina refractory with mullite-zirconia aggregates at 600 ?C. Wedge Splitting Tests were performed on 5 samples with different sintering temperatures. Images were acquired and analyzed via Digital Image Correlation (DIC). Notch Opening Displacements were used to evaluate the fracture energy at room and high temperatures. For the studied material, a 50 ?C increase in the sintering temperature increased about 30% the fracture energy of the material, which is also higher at 600 ?C when compared to room temperature measurements. (AU)

• FAPESP's process: 18/15266-0 - Detection and quantification of fracture mechanisms of ceramics at room and high temperatures using digital image correlation
• Grantee: Rodrigo Bresciani Canto
• Support Opportunities: Regular Research Grants
• FAPESP's process: 18/23081-0 - Fracture mechanisms of refractories at room and elevated temperatures analyzed with wedge splitting tests and image correlation
• Grantee: Rafael Vargas Maginador
• Support Opportunities: Scholarships in Brazil - Doctorate
• FAPESP's process: 18/02801-4 - Identification of material models for numerical simulation of powder pressing
• Grantee: Rodrigo Bresciani Canto
• Support Opportunities: Regular Research Grants