Idea of macro-scale and micro-scale prestressed ceramics
Junfeng Gu , Shuai Fu , Hang Ping , Wei Ji , Ji Zou , Hao Wang , Weimin Wang , Fan Zhang , Hanxing Liu , Zhengyi Fu
Interdisciplinary Materials ›› 2024, Vol. 3 ›› Issue (6) : 897 -906.
The brittleness of ceramics restricts their engineering application. Prestressing is promising to solve the problem, yet still lacks enough attention and extensive investigation. This work proposes the idea of macro-scale and microscale prestressed ceramics: to form compressive prestress in macro- or microscale range in the ceramics by designed additional force, which offsets the fracture stress at the crack tips, then enhances the strength of ceramics. The macro-scale prestressed ceramic has a designed long-range ordering stress distribution in a large scale, similar to the reinforced concrete and tempered glass. The micro-scale ceramic has a designed short-range ordered stress distribution, similar to that in the natural biomaterials. Strategies constructing the macro-scale and micro-scale prestressed ceramics are planned. Future research interests and challenges are prospected for developing the mechanical properties of ceramics.
macro-scale / micro-scale / prestressed ceramics / strength
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2024 The Author(s). Interdisciplinary Materials published by Wuhan University of Technology and John Wiley & Sons Australia, Ltd.
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