Corrosion Protection Of Mild Steel In Sea Water Using Chemical Inhibitor

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...

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Bibliographic Details
Published in:IOP conference series. Materials Science and Engineering 2018-03, Vol.343 (1), p.12012
Main Authors: Araoyinbo, Alaba O., Mohd Salleh, Mohd Arif Anuar, Jusof, Muhammad Zulerwan
Format: Article
Language:English
Subjects:
Corrosion
Corrosion effects
Corrosion inhibitors
Corrosion prevention
Corrosion rate
Exposure
Low carbon steels
Sea water corrosion
Seawater
Sodium
Sodium nitrates
Sodium nitrite
Sunlight
Weight loss
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Summary: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 %.
ISSN:1757-8981
1757-899X
DOI:10.1088/1757-899X/343/1/012012