Abstract
Nanometre-sized (hereafter n-) Pb particles embedded in an Al matrix were prepared byball milling, and the surface melting behaviour was studied by the internal frictiontechnique using a dynamic mechanical analyser. There is an internal friction peakappearing around Pb melting point and the height of the internal friction peak decreaseswith the increase of Pb particle size. Surface melting of n-Pb particles accounts for theinternal friction peak. The study may throw light on the nature of surface melting incondensed matter physics. In addition, the present work makes a beneficial attempt atexploring internal friction as an experimental method for studying surface melting.
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