Open AccessStudies on galvanic corrosion of metallic materials in marine medium
Author(s) -
Carmen Nejneru,
C Savin,
Manuela Cristina Perju,
Dumitru Doru Burduhos-Nergis,
Mariana Costea,
Costică Bejinariu
Publication year - 2019
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/572/1/012106
Subject(s) - cathodic protection , corrosion , galvanic cell , galvanic anode , galvanic corrosion , materials science , metallurgy , metal , carbon steel , aluminium , bronze , anode , electrode , chemistry
Galvanic corrosion occupies an important place among the corrosion techniques studies, especially because harbors and naval installations presents multiple components which are in direct contact with saltwater during operation time, such as: boats propeller - bronze, ship hull - carbon steel, rivets - steel, different types of protection shields - aluminum etc., thus metallic types combinations increase selective erosion depending on the metal position in the galvanic series. The galvanic corrosion prevention can be achieved by local cathodic protection with pieces of electronegative metal (zinc, magnesium) placed near the contacts or by inserting between these two metals of one or multiple high corrosion resistance materials to that specific medium. This paper presents an experimental study on different metal couplings in Black Sea water corrosion medium, in order to highlight the anodic (oxidation) or cathodic (reduction) protection of each metal during coupling.