Enhancing the mechanical properties of ceramics by high‐temperature rolling: A first demonstration using alumina. Issue 3 (24th November 2022)

• Record Type: Journal Article
• Authors: Li, Yingwei; Tan, Chi
• Is Part Of: Journal of the American Ceramic Society. Volume 106:Issue 3(2023)
• Page Start: 1644
• Page End: 1646
• Publication Date: 2022-11-24
• Subjects: alumina ceramic -- bending strength -- fracture toughness -- hardness -- high‐temperature rolling; Ceramics -- Periodicals; 620.1405
• DOI: 10.1111/jace.18895
• Languages: English
• ISSNs: 0002-7820

Abstract

Abstract: We herein report a technique, namely, high‐temperature rolling that can roll ceramics at high temperature with controllable speed. A first demonstration using alumina reveals that, after rolling at 800, 900, and 1000°C, the bending strength ( σ b ${\sigma _b}$ ), Vickers' hardness ( H v ${H_v}$ ), and fracture toughness ( K I c ${K_{Ic}}$ ) of alumina enhanced significantly. For instance, for the specimen rolled at 900°C, σ b ${\sigma _b}$, H v ${H_v}$, and K I c ${K_{Ic}}$ increased by ∼20% (360–430 MPa), ∼10% (13.1–14.5 GPa), and ∼61% (3.1–5 MPa m 0.5 ), respectively. This technique is expected to develop into a universal solution to enhance the mechanical properties of ceramics. Abstract : Graphical Abstract: