Corrosion Protection Of Mild Steel In Sea Water Using Chemical Inhibitor

International Conference and Exhibition in Advanced Materials and Microscopy 2017

材料科学;物理学

Araoyinbo, Alaba O.^1 ; Mohd Salleh, Mohd Arif Anuar^2 ; Jusof, Muhammad Zulerwan^1

Faculty of Engineering Technology, Universiti Malaysia Perlis (UniMAP), Perlis, Malaysia^1

Center of Excellence Geopolymer and Green Materials (CEGeoGTech), School of Materials Engineering, Universiti Malaysia Perlis (UniMAP), Perlis, Malaysia^2

关键词: Chemical inhibitors;    Corresponding weights;    Corrosion inhibition;    Corrosive media;    Corrosive medium;    Irradiation conditions;    Sodium nitrite;    Sunlight exposure;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/343/1/012012/pdf
DOI  :  10.1088/1757-899X/343/1/012012

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

The effect of sodium nitrite as a corrosion inhibitor of mild steel in sea water (i.e ASTM standard prepared sea water and sea water obtained from a local river) was investigated, using the weight loss technique. Different amount of sodium nitrite were prepared (i.e 2 % to 10 %) in the inhibition of the mild steel corrosion in sea water exposed to irradiation condition from sunlight exposure. The cut samples of mild steel were exposed to these corrosive media and the corresponding weight loss subsequently obtained was recorded at intervals of 1 to 4 weeks. It was observed that corrosion rate increases with the time of exposure to the corrosive medium exposed to sunlight and that sodium nitrite that was used at the chemical inhibitor was able to retard the corrosion rate of mild steel if the appropriate concentration is applied. The results obtained from the weight loss analysis shows that the optimum percentage of sodium nitrate in sea water that gives the optimum corrosion inhibition of mild steel is 4 %.