Jean-Pierre Guin

TL;DR: The hardness of chalcogen-rich glasses is low enough so that the brittleness parameter, B = H/K c, is lower than that of silicate glasses as discussed by the authors.

TL;DR: In this article, the authors studied the dependence of hardness on the loading time of the indentation process of a Chalcogenide glass, and showed that the penetration displacement is the sum of an elastic component which reaches values as high as 60% of the total displacement, and a creep one, which is strongly non-Newtonian (shear thinning), and leads to a significant decrease of hardness with an increase of loading time.

TL;DR: In this paper, the authors provide evidence for densification and volume conservative shear flow by means of atomic force microscopy topological analysis of the indentation profile and volume on as-quenched and densified specimens (pressure up to 25 GPa).

TL;DR: Atomic force microscopy could find no evidence for cavity formation in this study and suggests that completely brittle fracture occurs in glass.

TL;DR: In this article, the authors described the glass synthesis and the direct congruent crystallization processes, and the material transparency is discussed in light of its microstructure, which exhibits a high density (i.e., complete absence of porosity) and micro-scale crystallites with very thin grain boundaries.