izvorni znanstveni rad
Corrosion is an undesirable result of a chemical or electrochemical reaction between a metal or metal alloy and its environment. The intensity of corrosion damage depends on the properties of the environment in which it is located, as well as on the characteristics of a certain material, such as: chemical composition, surface condition, shape and size of crystal grain, presence of residual stress, design of structural element, etc. Galvanic or bimetallic corrosion is a type of corrosion that takes place when at least two materials of different potential are joined in the presence of an electrolyte, resulting in the formation of a galvanic cell in which the less noble or more electronegative metal is the anode, and the more noble and more electropositive metal is the cathode. The result of the potential difference represents the voltage of the cell, that causes the generation of an electromotive force which is greater when the potential difference is greater, which ultimately causes the wear of the anode. In the experimental part of the paper, the testing results of different metal compounds in the salt chamber are presented.
galvanic corrosion; salt atmosphere; material selection
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