Effect of Immersion Depth on Marine Corrosion of Mild Steel

Numerous extensive efforts have been done to acquire the applicable green corrosion inhibitors in order to decrease the corrosion rate of the materials. The corrosion inhibition of mild steel is vital for technology due to the increased industrial applications of these materials. In this report, the inhibitive action of Cymbopogon Citratus on the marine corrosion of mild steel was evaluated. The inhibition efficiency was calculated using weight loss measurement method, electrochemical measurement and inhibitor mechanism analysis. It was found that, Cymbopogon Citratus exhibited a very good performance as a green corrosion inhibitor for mild steel corrosion in seawater. All the experimental methods used for this project show that the presence of Cymbopogon Citratus in the seawater significantly decreases the corrosion rates and further decreasing the corrosion rates as the concentration of Cymbopogon Citratus increases. To sum it up, the inhibition efficiency increases with an increase in Cymbopogon Citratus concentration.

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MICROSTRUCTURE AND CORROSIVE BEHAVIOR OF ENAMEL COATING MODIFIED ON MILD STEEL

Surface Review and Letters ◽

10.1142/s0218625x18500816 ◽

2018 ◽

Vol 25 (04) ◽

pp. 1850081 ◽

Cited By ~ 1

Author(s):

Y. L. LI ◽

Z. R. HUANG ◽

Q. D. ZHONG

Keyword(s):

Corrosion Resistance ◽

Mild Steel ◽

Enamel Coating ◽

Heat Treating ◽

X Ray Diffraction ◽

Marine Corrosion ◽

X Ray ◽

Dense Microstructure ◽

Different Temperatures ◽

And Behavior

Due to the study of marine corrosion of mild steel, in order to simulate the corrosion conditions of enamel coatings in seawater, enamel coatings applied on mild steel were immersed in 3.5[Formula: see text]wt.% NaCl liquor and the related corrosion features and behavior of enamel were analyzed by X-ray diffraction (XRD), scanning electron microscopy (SEM) and evaluated by electro-chemical method such as potentiodynamic polarization testing. Under the appropriate heat treatment system, the enamel coatings sintered on the same kind of mild steel at different temperatures were studied: all enamel samples were within the temperature range from 710[Formula: see text]C to 830[Formula: see text]C, the heat treating process at the microstructural level was evaluated and correlated with corrosion resistance properties. All the enamel coatings were characterized and it was observed that the enamel coatings that showed excellent corrosion resistance when sintered at a temperature of 810[Formula: see text]C can offer a better physical barrier than other temperatures because of their better bonding force and dense microstructure with less pores.

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