Abstract
In this study, the effects of cladding configuration and volume fraction of Cu on thermal diffusivity in mono and bundled Al/Cu clads were investigated using the laser flash technique. The thermal diffusivity in the Al/Cu clads increased with increasing volume fraction of Cu. Meanwhile, the bundled Al/Cu clad exhibited a higher thermal diffusivity than the mono Al/Cu clad at the same volume fraction of Cu. The lower thermal diffusivity in the mono Al/Cu clad was due to an increase in thermal contact resistance caused by the delamination between Al and Cu materials. In addition, the narrower interval of the Al and Cu in bundled Al/Cu clad led to a decrease in the phase lag; therefore, the thermal diffusivity was close to that calculated by rule of mixture.
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