Experimental and Theoretical/Nemerical Investigations of Thin Films Bonding Strength
A laser spallation facility has been developed to measure the strength of planar interfaces between a substrate and a thin coating. The technique involves impinging a laser pulse of ultra short duration on the rear surface of the substrate, which is coated by a thin layer of energy absorbing metal such as Sn and Pb. The induced pressure pulse is converted-upon reflection from the specimen free surface into a tensile wave which, under certain conditions, can lead to spallation at the interface. It is shown by mathematical simulation that atomic bond rupture is the mechanism of separation in this experiment.
Bibliographic Reference: An article published in: Theoretical and Applied Fracture Mechanic. Vol.30 (1999). Pp47-59
Availability: An article published in: Theoretical and Applied Fracture Mechanic. Vol.30 (1999). Pp47-59
Record Number: 200013379 / Last updated on: 2001-06-27
Original language: en
Available languages: en