Self‐healing processing in SiO<sub>2</sub>‐AlB<sub>2</sub> and SiO<sub>2</sub>‐SiB<sub>4</sub> glass composites for high‐temperature applications
Abstract AlB 2 and SiB 4 are used as active particles to design model SiO 2 ‐20 vol.% active particles composites for high‐temperature applications. The oxidation of AlB 2 and SiB 4 particles in air at T = 1000°C–1050°C rapidly leads to the formation of an important quantity of liquid that can heal cracks. Model composites have been used to determine liquid flowing speed into the cracks and to discuss the effect of liquid properties, such as viscosity and wettability, on healing efficiency. The main role of the secondary reaction of the liquid with the matrix to form a dense solid‐state compound, from which crack healing stabilization is expected, is underlined.
Authors
- Sandra Castanié
- François Méar (ORCID: https://orcid.org/0000-0002-5500-2615)
- Renaud Podor (ORCID: https://orcid.org/0000-0002-8103-1743)
Institutions
- Centre National de la Recherche Scientifique (FR)
- Commissariat à l'Énergie Atomique et aux Énergies Alternatives (FR)
- Unité de catalyse et de chimie du solide de Lille (FR)
- CEA Marcoule (FR)
- Institut de Chimie Séparative de Marcoule (FR)
- École Centrale de Lille (FR)
Publication Details
- Journal
- Journal of the American Ceramic Society
- Published
- 2025-08-28
- DOI
- https://doi.org/10.1111/jace.70200
- Primary Topic
- Advanced ceramic materials synthesis
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- Direction Générale de l’Armement