Corrosion behavior of two multiphase Mg-Li-Al-based alloys in 0.6 M NaCl aqueous solution is investigated by hydrogen gas evolution measurement and electrochemical test. This paper reports, for the first time, the comparison of hydrogen evolution and Tafel extrapolation results of Mg-Li-Al-based alloys. The corrosion rate of Mg-9Li-7Al-1Sn is observed to be reasonably higher when compared to th...

10 Epitaxial Fe(0 0 1) films of a high crystalline and surface quality, as checked in situ with AES, low energy electron 11 diffraction and STM, were grown on MgO(0 0 1). Such films show an exceptional corrosion resistance remaining me12 tallic for years at the ambient atmosphere, except of 5–10 nm, as found using the conversion electron M€ ossbauer 13 spectroscopy (CEMS). For more systematic c...

This study deals with onshore oilfield drilling fluid system to drill corrosion. Corrosion under static and dynamic conditions of the drilling fluid was evaluated. The effect of temperature and pressure on corrosion was examined. Corrosion was more severely affected by temperature compared to pressure. The combined effect of a deoxidizing agent and an inhibitor was observed to exhibit better pr...

A new staged acid corrosion inhibition (ACI) concept, utilising polymerisable ACIs, has been developed to minimise the of coiled tubing and wellbore casing materials during matrix acidizing operations. The concept evaluated using a customised once-through flow cell 4 molar hydrochloric at 80 °C. high quality, protective inhibitor film is established an elevated ACI concentration test period 0–1...

The inhibitive action of alkali extract human hair extract (Bio waste) against the corrosion of mild steel (98.58%) in solutions of nitric acid has been studied using potentiodynamic polarization and electrochemical impedance spectroscopy (EIS). At inhibitor concentration range (0.004 % v/ v to 0.1% v/v) in 0.3 M HNO3acid, the results showed that these compounds suppressed both cathodic and ano...

A corrosion inhibitor was widely used to improve resistance of steel bar in reinforcement concrete structure. kind multi-component inhibitor, which is composed organic and inorganic substances, developed this research. This comparatively studied with various other inhibitors by using open circuit potential (OCP), electrochemical impedance spectroscopy (EIS), cyclic voltammetry (CV) methods. The...

Corrosion inhibition performance of 2-(2-hydroxybenzylideneamino)phenol (L(1)), 2-(5-chloro-2-hydroxybenzylideneamino)phenol (L(2)) and 2-(2-hydroxy-5-nitrobenzylideneamino)phenol (L(3)) on the corrosion behaviour of mild steel surface in a 1 M hydrochloric acid (HCl) solution is investigated by sophisticated analytical methods like potentiodynamic polarization, electrochemical impedance spectr...

Objectives: To evaluate the corrosion inhibition of an ethanolic extract Portulaca quadrifida (PQ) leaves on carbon steel surface in well-water by using a weight-loss study with various immersion periods, temperatures, and pH. The kinetic thermodynamic parameters are calculated for temperatures. Methods: protective film has been analyzed SEM, EDX AFM studies. action PQ was potentiodynamic polar...

A nanocrystalline layer was prepared on the surface of 34CrMo4 steel by time controlling shot peening (SP, i.e., 1, 5, 10, and 20 minutes). Field emission scanning electron microscopy (FESEM), X-ray diffraction (XRD) analysis, and transmission electron microscope (TEM) were applied to analyze the surface, cross-sections, and grain size of the specimens before and after SP. The electrochemical c...

The objective of the work was to undertake a literature review on the subject of corrosion inhibition in the offshore oil and gas industry to understand the current issues. The application of chemical corrosion inhibitors can significantly reduce the rate of corrosion of carbon steel pipelines due to the presence of CO2 and/or H2S. An inhibited corrosion rate of 0.1 mm/year can typically be ach...