SYMPOSIA PAPER Published: 01 January 1978
STP38632S

Adhesion of Granular Thin Films

Source

With a view to measuring the adhesion of the microscopic metallic grains which constitute granular thin films, we have perfected a dynamic method. Very high accelerations (107 m/s2) are obtained by means of ultrasonic vibration amplifiers.

Investigation of the adhesion of granular silver films deposited on carbon provided very interesting results: the presence of a coalescence phenomenon shows that there are interactions between grains. The adhesion varies according to the size of the grains, and is very low (150 N/m2) compared with that of thick films (5.0 × 106 N/m2).

Finally, our measurement of the adhesion of thick films revealed that the break occurs in the silver very near the silver/carbon interface, and subsequent studies of the growth of silver/carbon show that the grains form on one or several monolayers of silver.

Author Information

Faure, R
Ingenieur au Centre National de la Recherche Scientifique Centre d'Etudes des Couches Minces, Laboratoire associe, C.N.R.S., Universite d'Aix-Marseille Ill, Marseille, France
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Details
Developed by Committee: C24
Pages: 184–197
DOI: 10.1520/STP38632S
ISBN-EB: 978-0-8031-5546-6
ISBN-13: 978-0-8031-0272-9