Platinum Metals Review - Volume 12, Issue 2, 1968

The insertion of small pieces of platinum into the surface of lead or lead alloy anodes causes a remarkablechange in their behaviour as electrodes. Such lead-platinum bielectrodes are inexpensive, robust and easily fabricated and can be used successfully for the cathodic protection of marine structures. In this article the author describes the principles involved and reviews ten years of experience in a variety of applications.

The slidewire potentiometer is a device intended to produce a signal voltage uniquely related to the mechanical displacements involved, and its materials of construction must provide therefore a reasonably accurate embodiment of the desired mathematical relationships. Noble metal alloys are usually selected for such applications because of theirstability and freedom from corrosion. In this paper, based on a lecture given recently to the Control and Automation Division of the Institution of Electrical Engineers, some general correlations between electrical performance and metallurgical characteristics are discussed and it is shown how the application of these principles has led to the development ofnew and improved potentiometer slidewire materials.