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The 50th William Blum Lecture, Alloy Plating by Heating Stacked Single Layers and the Possibility of its Application in the Future

In recent years, the plating industry has had the serious challenge of severe environmental regulations. Various "hazardous" metals, e.g., lead, cadmium, etc., have been the target for regulations one by one. As a result, a pessimistic outlook that any metal could be classified into a regulated one by laws has appeared. However, any element, or materials can present both hazardous and benign situations. In many cases, the so called "hazardous" metals would be toxic, when they exist as an ion, but not as a solid metal. Therefore, alloy plating can be one of the best solutions to avoid disuse by the environmental regulations with minor changes for production. Alloy Plating has been conventionally carried out by coelectrodeposition in solutions. On the other hand, the author has proposed a unique method of alloy coating through the combination of heat treatment and multiple plating. In this lecture, the author shows the results and the possibilities for application in the future.

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