Pulse Laser Removal of Sputtered Oxide Films: Measurement of Adhesion Strength

Abstract

Heating power of continuous lasers (CO2) has been demonstrated to motivate the spall of coatings by generating compressive stress in the coating1. On the other hand, dynamic spallation of coatings can be checked by using pulsed lasers, as shown in the pionnering work presented by Vossen2. Quantitative modelling of this laser spallation technique was performed by V. Gupta allowing to determine the interface strength of several metal-ceramic interfaces3. The same approach has been used by M.W. Sigrist for plasma sprayed ceramic coatings4.