Metallized polymers are nowadays of considerable technological importance and are widely used in industry ranging from food packing to optical data storage. A detailed understanding of the metal/polymer interface properties plays a key role in most applications of metallized polymers. During the last few years, much work has been performed to study the different aspects of metal/polymer interface formation using various microscopic and surface-sensitive techniques. For recent and detailed reviews on metal/polymer interfaces, we refer the reader to refs. 1 and 2 and the article by F. Faupel et al. in the present proceedings. In this article we only consider the metal adsorption phenomena during metal/polymer interface formation by thermal evaporation of a noble metal onto a polymer.