HAL will be down for maintenance from Friday, June 10 at 4pm through Monday, June 13 at 9am. More information
Skip to Main content Skip to Navigation
Journal articles

A simple approach to bulk bioinspired tough ceramics

Abstract : The development of damage-resistant structural materials that can withstand harsh environments is a major issue in materials science and engineering. Bioinspired brick-and-mortar designs have recently demonstrated a range of interesting mechanical properties in proof-of-concept studies. However, reproducibility and scalability issues associated with the actual processing routes have impeded further developments and industrialization of such materials. Here we demonstrate a simple approach based on uniaxial pressing and field assisted sintering of commercially available raw materials to process bioinspired ceramic/ceramic composites of larger thickness than previous approaches, with a sample thickness up to 1 cm. The ceramic composite retains the strength typical of dense alumina (430 ± 30 MPa) while keeping the excellent damage resistance demonstrated previously at the millimeter scale with a crack initiation toughness of 6.6 MPa.m 1/2 and fracture toughness up to 17.6 MPa.m 1/2. These results validate the potential of these all-ceramic composites, previously demonstrated at lab scale only, and could enable their optimization, scale-up, and industrialization.
Document type :
Journal articles
Complete list of metadata

Cited literature [27 references]  Display  Hide  Download

Contributor : Sylvain Deville Connect in order to contact the contributor
Submitted on : Friday, February 28, 2020 - 8:25:05 AM
Last modification on : Tuesday, January 4, 2022 - 6:27:45 AM
Long-term archiving on: : Friday, May 29, 2020 - 12:46:03 PM


A simple approach to bulk bioi...
Files produced by the author(s)




Hassan Saad, Kaoutar Radi, Thierry Douillard, David Jauffres, Christophe L Martin, et al.. A simple approach to bulk bioinspired tough ceramics. Materialia, Elsevier, 2020, 12, pp.100807. ⟨10.1016/j.mtla.2020.100807⟩. ⟨hal-02493649⟩



Record views


Files downloads