1151Uniform Corrosion

This type of corrosion is the most common form of attack for nonpassive alloys. In order that uniform corrosion occurs, the material should exhibit no major differences in microstructure. In addition to this, the environment should be of uniform composition at the metal-liquid interface, and conditions of solution temperature and flow should remain constant. A further requirement is that concerning the state of stress of the material, which should be uniform throughout the structure and the design of the structure/component should be such that no large stress concentrations exist. As all areas of the metal corrode at a similar rate, it is possible to apply the results obtained from polarization studies to predict the rate of metal loss over a given period of time. This allows the design engineer the opportunity to make use of a corrosion allowance for design purposes.

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