Mechanical behaviour of metallic thin films on polymeric substrates and the effect of ion beam assistance on crack propagation

The mechanisms of crack propagation in metallic films on polymeric substrates have been studied through in situ atomic force microscopy observations of thin films under tensile stresses and finite element stress calculations. Two series of films – ones deposited with ion beam assistance, the others...

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Bibliographic Details
Published in:Acta materialia 2005-01, Vol.53 (2), p.411-417
Main Authors: George, M., Coupeau, C., Colin, J., Grilhé, J.
Format: Article
Language:English
Subjects:
Applied sciences
ATOMIC FORCE MICROSCOPY
CRACK PROPAGATION
CRACKS
Exact sciences and technology
Finite element analysis
FINITE ELEMENT METHOD
ION BEAMS
MATERIALS SCIENCE
MECHANICAL PROPERTIES
Mechanical properties and methods of testing. Rheology. Fracture mechanics. Tribology
Metals. Metallurgy
STRESSES
THICKNESS
THIN FILMS
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Summary:The mechanisms of crack propagation in metallic films on polymeric substrates have been studied through in situ atomic force microscopy observations of thin films under tensile stresses and finite element stress calculations. Two series of films – ones deposited with ion beam assistance, the others without – have been investigated. The observations and stress calculations show that ion beam assistance can change drastically the propagation of cracks in coated materials: by improving the adhesion film/substrate, it slows down the delamination process, but in the same time enhances the cracks growth in the thickness of the material.
ISSN:1359-6454
1873-2453
DOI:10.1016/j.actamat.2004.09.036