title: Self-Healing Glassy Thin Coating for High-Temperature Applications.
abstract: Glass thin films (with nanometer to micrometer thicknesses) are promising in numerous applications, both as passive coatings and as active components. Self-healing is a feature of many current technological developments as a means of increasing the lifetime of materials. In the context of these developments, we report on the elaboration of the first self-healing glassy thin-film coating developed specifically for high-temperature applications. This coating is obtained by pulsed laser deposition of alternating layers of vanadium boride (VB) and a multicomponent oxide glass. Self-healing is obtained through the oxidation of VB at the operating temperature. The investigation of the effect of elaboration parameters on the coating composition and morphology made it possible to obtain up to seven-layer coatings, with good homogeneity and perfect interfaces, and with a total thickness of less than 1 μm. The autonomic self-healing capacity of the coating has been demonstrated by an in situ experiment, which shows that a crack of nanometric dimension can be healed within a few minutes at 700 °C.
authors.affiliation: Univ. Lille, CNRS, Centrale Lille, ENSCL, Univ. Artois, UMR 8181 - UCCS - Unité de Catalyse et Chimie du Solide , F-59000 Lille, France.
authors.forename: Sandra
authors.initials: S
authors.lastname: Castanié
authors.affiliation: Univ. Lille, CNRS, Centrale Lille, ENSCL, Univ. Artois, UMR 8181 - UCCS - Unité de Catalyse et Chimie du Solide , F-59000 Lille, France.
authors.forename: Thibault
authors.initials: T
authors.lastname: Carlier
authors.affiliation: Univ. Lille, CNRS, Centrale Lille, ENSCL, Univ. Artois, UMR 8181 - UCCS - Unité de Catalyse et Chimie du Solide , F-59000 Lille, France.
authors.forename: François O
authors.initials: FO
authors.lastname: Méar
authors.affiliation: Univ. Lille, CNRS, Centrale Lille, ENSCL, Univ. Artois, UMR 8181 - UCCS - Unité de Catalyse et Chimie du Solide , F-59000 Lille, France.
authors.forename: Sébastien
authors.initials: S
authors.lastname: Saitzek
authors.affiliation: Univ. Lille, CNRS, Centrale Lille, ENSCL, Univ. Artois, UMR 8181 - UCCS - Unité de Catalyse et Chimie du Solide , F-59000 Lille, France.
authors.forename: Jean-François
authors.initials: JF
authors.lastname: Blach
authors.affiliation: Institut de Chimie Séparative de Marcoule, UMR 5257 CEA-CNRS-UM2-ENSCM Site de Marcoule , BP 17171, F-30207 Bagnols sur Cèze cedex, France.
authors.forename: Renaud
authors.initials: R
authors.lastname: Podor
authors.affiliation: Univ. Lille, CNRS, Centrale Lille, ENSCL, Univ. Artois, UMR 8181 - UCCS - Unité de Catalyse et Chimie du Solide , F-59000 Lille, France.
authors.forename: Lionel
authors.initials: L
authors.lastname: Montagne
keywords: coating; multicomponent oxide glasses; pulsed laser deposition; self-healing; thin film