The nucleation, growth and microstructure of electrodeposited gold films on (111) silver substrates

Publisher Website
Google Scholar
Abstract
The nucleation and growth of electrodeposited gold layers on (111) surfaces of silver have been examined by means of electron microscopy, and compared with gold layers formed by evaporation onto similar substrates. Considerable similarities between the two types of film are revealed by these observations, and this is discussed in relation to the factors controlling the mode of nucleation and growth. The influence of the perfection of the substrate silver surface on the mode of nucleation of the gold has been studied. Appreciable effects are observed, and these do show differences between the two modes of growth. Both types of deposit are doubly positioned, and careful dark-field observations show that overlapping double positioning occurs during growth on an already continuous gold deposit. An irregular dislocation array is observed at the overlapping double positioning boundaries, which are effectively coherent twin boundaries.