Corrosion Behavior of Zinc Alloy Layers
Journal Title: Analele Universitatii "Dunarea de Jos" din Galati. Fascicula IX, Metalurgie si Stiinta Materialelor - Year 2014, Vol 37, Issue 2
Abstract
The alloying of zinc with some additional elements in specific quantities could be reliably used in the hot-dip coating process. These elements conferr substantially improved performance to the end-product specially by improving corrosion resistance. In this paper the influence of adding different percentages of aluminum and bismuth into the zinc bath was researched. The technological conditions for obtaining zinc-bismuth-aluminium coatings with 0.27% - 0.52% bismuth and 0.11% Al are presented. The degree of microalloying and assimilation in the zinc bath was determined by spectrometric analysis of alloy samples, taken from the melt at different time intervals. Corrosion resistance of the layers was assessed by two types of tests: corrosion behaviour in seawater for a period of five weeks and electrochemical tests in 3% NaCl solution. Both applied corrosion tests show an increase in corrosion resistance to bismuth content increasing and metallographic analysis of samples corroded shows a general corrosion process.
Authors and Affiliations
Tamara RADU, Anişoara CIOCAN, Gina Genoveva ISTRATE
Keywords
Related Articles
- EP ID EP590548
- DOI -
- Views 85
- Downloads 0
Redesigning a Jaw Crusher Using Value Analysis, Part I
Value Analysis (VA) is a method that provides an operating technique using a creative and organized approach. It is managed by a group, each of them selected according their expertise in specific subjects and coordinated...
Electrochemical Modifications of Titanium and Titanium Alloys Surface for Biomedical Applications – A Review
The field of biomaterials requires the input of knowledge from very different areas such as biology, medicine and engineering so that the implanted material in a living body to not induce any adverse impacts. The paper f...
Psychosocial Risk Factors Influencing Managerial Decision in Environmental Field
Managerial decision represents the most important activity in manager’s work. Studying managerial decision means deepening all the factors involved in the entire decisional process. The aim of this paper is to underline...
Increase the Steels Purity Cast in Vacuum
The need to develop products with special characteristics and high mechanical properties led to the introduction of plastic deformation of semifinished materials. Special purpose products are produced from slabs, blooms...
Glow Discharge Optical Emission Spectrometry (GDOES), an Effectiveness Method for Characterizing Composition of Surfaces and Coatings
Within the frame of this work, the technical procedures and real advantages of using Glow Discharge Optical Emission Spectroscopy (GDOES) for establishing depth concentration profiles of surfaces are presented. GDOES can...