Corrosion Resistance of Zinc Coated Steel in Sea Water Environment
Journal Title: Analele Universitatii "Dunarea de Jos" din Galati. Fascicula IX, Metalurgie si Stiinta Materialelor - Year 2015, Vol 38, Issue 3
Abstract
The life time of metallic materials used in naval transport industry is influenced by their corrosion resistance. For utilization in shipbuilding and offshore construction, metallic materials need to be covered with protective coatings, especially, or different anti-corrosion protection methods need to be used. During the last decades a series of inorganic and organic coatings was developed. Among inorganic coatings, the most used ones are the galvanizing treatments. This paper presents a comparative investigation regarding the corrosion resistance of uncoated low alloy steel and galvanizing steel. Both samples have been subjected to corrosion in sea water harvested from the Black Sea, Mangalia harbor. The electrochemical assays were: open circuit potential (OCP), linear polarization resistance (Rp), potentiodynamic polarization (PD) and cyclic voltammetry. The results obtained by in situ determination were confirmed by optical microscopy. The results revealed an improved corrosion resistance of galvanized steel in natural sea water in comparison with low alloy steel.
Authors and Affiliations
Adrian DIACONU, Cătălin SOLOMON, Lidia BENEA, Valentin DUMITRAŞCU, Laurenţiu MARDARE
Keywords
Related Articles
- EP ID EP581329
- DOI -
- Views 94
- Downloads 0
Magnetical Properties of Silicon Steels Used for Electrotechnical Industries
This paper-work shows the laboratory experiments achieved on more silicon steel plates, where the magnetic ranges were spot- lighted by particular technical requirements. On the same plates the texture analyses were made...
Laser Surface Alloying of Some Steels from SiC Predeposited Powders
For the purpose of studying the possibilities of increasing the wear resistance, specimens of three steels with 0.2%C, 0.46%C and 1%C were surface alloyed with reinforcement from overlapping pastes with green SiC hard pa...
Behavior of Welded Joints From Some Stainless Austenite Steel Types During Nitriding Process
Researches made on welded and nitrided samples from stainless austenite steel types show that nitriding thermo chemical treatment can be applied also for welded joints. As a result of the treatment, a diffusion layer wit...
Mathematical Modeling of Thermomechanical Treatment Process Applied to Aluminum Base Alloys for Aeronautics
To optimize the thermo-mechanical processing of aluminum base alloys, mathematical modeling was used in a laborious research program by planned experiment of thermomechanical treatment process applied to an Al-Zn system...
Energy Disequilibrium Effects in Heat Treatment Equipment
The differences found between heat fluxes in different areas of the heat treatment equipment workspace, due to energy disequilibrium or due to improper positioning of loading, can cause non-uniform temperatures and heat...