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Mechanical Reliability of Film/Substrate Systems Intended for Electronic Packaging
Published online by Cambridge University Press: 25 February 2011
Abstract
Calculations of thermoelastic internal stresses for different systems comprised of one or several films deposited on a substrate are presented. The calculated stresses are compared to stresses directly determined by deflection measurements. The film(s)/substrate systems were submitted to cyclic bending tests in order to analyse the evolution of their internal stresses. When a significant relaxation of the stresses is detected, it is discussed with respect to the activation of irreversible deformation mechanisms, which will depend on the nature of the phases constituting the system.
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- Copyright © Materials Research Society 1991
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