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The 44th William Blum Lecture, Electrodeposition of Alloys and Composites with Superior Corrosion and Electrocatalytic Properties

Tremendous potential exists for the growth of the metal finishing industry in this century through the development of processes that are either environmentally friendly or are applicable at the nanoscale. The chemical composition and the structure of electrodeposited metals, alloys and composites control their functional properties. This paper will discuss some of the theoretical and experimental studies done to achieve such coatings. Nanostructured alloys and innovative composite materials were developed through adaptation of existing bath chemistries. Process development was based on techniques developed in our laboratories such as: under potential deposition (UPD) of monoatomic metal layers, autocatalytic reduction and potentiostatic pulse (PP) plating of layers of amorphous and crystalline nanostructured metals and alloys. The development processes have been optimized based on obtaining superior corrosion and electrocatalytic properties. Further refinement of the coating process was achieved through the development of first principles based theoretical models.

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