Electrochemical Behaviour of Low Carbon Steel in Aqueous Solutions
نویسندگان
چکیده
An effective way of assessing corrosion in pipelines before serious consequences occur is to use tools that can predict the future of a pipeline through an understanding of its present state and the mechanisms of corrosion. In this work electrochemical methods such as liner and tafel polarization resistance were used to evaluate corrosion. Most metal corrosion occurs via electrochemical reactions at the interface between the metal and an electrolyte solution and, therefore, since corrosion occurs via electrochemical reactions, electrochemical techniques are ideal for the study of the corrosion processes. This particular study has examined the corrosion that occurred in different grades of low carbon steels with particular aggressive solutions. Corrosion rate measurements were obtained using different aqueous environments such as a plain sodium chloride solution, a sodium chloride and carbon dioxide solution, and a sodium chloride and sulphuric acid solution that also contained a small amount of carbon dioxide. The corrosion morphology was examined using a scanning electron microscopy (SEM) in which the surfaces examined showed general corrosive attack with some shallow pits.
منابع مشابه
The Effect of Solution Concentration on the Electrochemical Behaviour of AISI 321 Stainless Steel in Sulfuric Solutions
متن کامل
Mentha spicata L. Extract as a Green Corrosion Inhibitor for Carbon Steel in HCl Solution
The effect of Mentha spicata L. extract on the corrosion behaviour of carbon steel in 1.0 M HCl solution was investigated using polarization, electrochemical impedance spectroscopy (EIS) and electrochemical noise (EN) techniques. The solution containing 250 ppm of the ethanolic solution of extract showed the highest inhibition efficiency (IE). The effect of temperature on the rate of corrosion ...
متن کاملElectrochemical Sulfate Removal from Aqueous Solution Using Sandwich Panel Carbon Cloth Electrode by Steel Mesh: A laboratory study
Background and Objectives: Sulfate is one of the chemical pollutants in water that can cause adverse health effects such as digestive and blood problems at high concentrations in humans. Conversion of sulfate to substances such as hydrogen sulfide can corrode metal pipes. Therefore, the aim of this study was to investigate the effect of electrochemical sulfate removal using a sandwich panel car...
متن کاملElectrochemical and Tribological Behaviour of Oxide Dispersion Strengthened Duplex Stainless Steel in Mine Water Environment
Abstract This work investigated the electrochemical and aqueous tribological behavior of hot pressed 2205 duplex stainless steel (DSS). DSS sintered composites of different volume percent (% vol) of partially stabilized zirconia (PSZ) was developed using powder metallurgy (PM) technique. Electrochemical behaviour was studied at room temperature, using open circuit potential and potentiody...
متن کاملThe Effect of the Carbon Nanotube Content on the Corrosion Behaviour of Ni-P-CNT Composite Coating
In the present study, Ni-P-CNT composite coating was successfully fabricated via electroless plating. Scanning electron microscopy (SEM) was used to characterize the coatings. The effect of CNTs concentration in the bath on its content in the composite coatings was studied. Furthermore, the corrosion behaviour of the coatings with different contents of CNTs was evaluated using Tafel polarizatio...
متن کامل