This paper presents a quick, reliable, and fully quantitative method of measuring the intermetallic coverage of copper to aluminium bonding at time zero and post reliability stressing. This method is currently used in select manufacturing quality control processes, as well as during product release procedures. By applying this measurement method after various life-tests, it has been possible to collect information on degradation in the copper aluminium system which is currently being used to make a model of the corrosion mechanism in the copper aluminium system.

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