Testing of galvanic corrosion in a salt atmosphere

izvorni znanstveni rad

izvorni znanstveni rad

Testing of galvanic corrosion in a salt atmosphere

Vrsta prilog sa skupa (u zborniku)
Tip izvorni znanstveni rad
Godina 2023
Nadređena publikacija MTECH 2023 - 4. međunarodna konferencija o materijalima : toplinska obrada i inženjerstvo površina, materijali i tribologija, korozija i ispitivanje materijala
Stranice str. 195-208
ISSN 2584-4334
EISSN 2806-8769
Status objavljeno

Sažetak

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.

Ključne riječi

galvanic corrosion; salt atmosphere; material selection