EUROPEAN CONGRESS AND EXHIBITION ON ADVANCED MATERIALS AND PROCESSES - EUROMAT 2021

Nacre-like aluminas are a new class of bioinspired ceramic composites developed over the last few years. These brick-and-mortar composites are obtained by aligning and concentrating alumina platelets and distributing a secondary phase (polymer, ceramic, glass, metal) at the platelets interfaces. The main interest so far of these materials is their damage resistance, resulting mostly from the crack deflection at the platelet/mortar interface. I will discuss the latest processing route developments and our current understanding of the micro- and macro-mechanical properties of these materials, as well as the current challenges and possible applications of these materials.

References:
- A simple approach to bulk bioinspired tough ceramics, H Saad, K Radi, T Douillard, D Jauffres, CL Martin, S Meille, S Deville, Materialia 12, 100807
- Strength and toughness trade-off optimization of nacre-like ceramic composites, K Radi, D Jauffres, S Deville, CL Martin, Composites Part B: Engineering 183, 107699
- Interface failure in nacre-like alumina, R Henry, H Saad, A Doitrand, S Deville, S Meille, Journal of the European Ceramic Society 40 (13), 4694-4699
- Effect of microstructure heterogeneity on the damage resistance of nacre-like alumina: insights from image-based discrete simulations, K Radi, H Saad, D Jauffres, S Meille, T Douillard, S Deville, CL Martin, Scripta Materialia 191, 210-214
- Determination of interface fracture properties by micro-and macro-scale experiments in nacre-like alumina, A Doitrand, R Henry, H Saad, S Deville, S Meille, Journal of the Mechanics and Physics of Solids 145, 104143