2D- and 3D Observation and Mechanism of Self-Healing in Glass-Boron Composites

Castanié, Sandra; Mear, François; Podor, Renaud; Suhonen, Heikki; Montagne, Lionel; Riemanis, I.

Document type :

Article dans une revue scientifique

DOI :

10.1111/jace.14041

Permalink :

http://hdl.handle.net/20.500.12210/12405

Title :

2D- and 3D Observation and Mechanism of Self-Healing in Glass-Boron Composites

Author(s) :

Castanié, Sandra [Auteur]
Mear, François [Auteur]

Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181
Podor, Renaud [Auteur]
Suhonen, Heikki [Auteur]
Montagne, Lionel [Auteur]

Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181
Riemanis, I. [Auteur]

Journal title :

Journal of the American Ceramic Society

Volume number :

Pages :

849-855

Publication date :

2015-12-21

HAL domain(s) :

Chimie/Chimie inorganique

English abstract : [en]

The self-healing of a crack in a glass–boron composite has been observed by X-ray nanotomography. It shows the occurrence of a healing effect within the bulk of the composite, despite of a limited oxygen access in the ...
Show more >The self-healing of a crack in a glass–boron composite has been observed by X-ray nanotomography. It shows the occurrence of a healing effect within the bulk of the composite, despite of a limited oxygen access in the crack. This 3D tomographic observation offers new insights in the mechanism of healing, complementary to in situ high-temperature environmental scanning electron microscopy. In addition, nano-X-ray fluorescence imaging, electron microprobe and solid-state NMR gave evidence that the molten B2O3, produced by the oxidation of boron particles at 700°C, reacts with the glass matrix to form borosilicate compounds that also contribute to heal the crack. The high viscosity of B2O3 at 700°C leads to the formation of bridges between the walls of the crack, which limit oxygen diffusion. Thus, the B particle oxidation is not completed after a single healing cycle, meaning that several healing cycles can be obtained in a composite.Show less >

Language :

Anglais

Audience :

Internationale

Popular science :

Non

Administrative institution(s) :

ENSCL
CNRS
Centrale Lille
Univ. Artois
Université de Lille

Collections :

Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181

Research team(s) :

RMN et matériaux inorganiques (RM2I)

Submission date :

2019-09-24T14:35:10Z

2D- and 3D Observation and Mechanism of ... BibTeX CSV Excel RIS

2D- and 3D Observation and Mechanism of ...

BibTeX

CSV

Excel

RIS