Author:
Zagrebelny Andrey V.,Carter C. Barry
Abstract
ABSTRACTThe deformation of thin layers of glass on crystalline materials has been examined using newly developed experimental methods for nanomechanical testing. Continuous films of anorthite (CaAl2Si2O8), celsian (BaAl2Si2O8), and monticellite (CaMgSiO4) were deposited onto A12O3 surfaces by pulsed-laser deposition (PLD). Mechanical properties such as Young's modulus and hardness were probed with a high-resolution depth-sensing indentation instrument. Nanomechanical testing, combined with AFM in-situ imaging of the deformed regions, allowed force-displacement measurements and imaging of the same regions of the specimen before and immediately after indentation. Emphasis has been placed on examining how changes in the glass composition, residual stress introduced into the films, effect of film's heat-treatment, and the effect of substrate crystallographic orientation will affect the mechanical properties of silicate-glass films.
Publisher
Springer Science and Business Media LLC
Reference15 articles.
1. 13. Zagrebelny A. V. , Lilleodden E. T. and Carter C. B. , MRS 1997 Fall Meeting, Boston (1996), p. 179.
2. Indentation induced dislocation nucleation: The initial yield point
3. 11. Zagrebelny A. V. and Carter C. B. , Scripta Mat., in press, (1997).
4. Interfacial Reactions During Processing of Thin Nickel Oxide Films Grown by Pulsed-Laser Ablation
5. 9. Mallamaci M. P. , Interfaces Between Alumina and Silicate-Glass Films, Ph. D. Thesis Cornell University (1995).