Abstract
The effect of Juniperus communis (JC) extract on the inhibition of bronze corrosion in aqueous chloride solution was studied by electrochemical polarization methods. The variation of two experimental factors such as the chloride concentration and the temperature allows us to deduce the kinetics parameters of this process (Ea = 65.7 kJ•mol–1). Thermodynamic calculations indicated that JC adsorption on bronze surface obeyed Arrhenius adsorption isotherm and was characterized by an endothermic process (ΔH* = 54.7 kJ•mol–1).
Highlights
Corrosion is the deterioration of metal by chemical attack or reaction with its environment
The comparison of the electrochemical behavior of (Cu10Sn) in chloride medium, with and without addition of the Juniperus communis (JC) extract show an increase in the cathodic slope value and a decrease in the anodic one
Our study reports the effect of Juniperus communis (JC) extract on the protection of synthetic bronze (Cu10Sn) corrosion in a natural 0.5 chloride medium by electrochemical stationary investigations
Summary
Corrosion is the deterioration of metal by chemical attack or reaction with its environment. It is a constant and continuous problem, often difficult to eliminate completely. Prevention would be more practical and achievable than complete elimination [1]. The knowledge of the causes of corrosion is essential to develop a control technology and to improve the means of protection. The term bronze recovers in the old objects in a large number of nuances of alloys. In most cases, these are materials composed of copper and tin, the tin content is between 4% and 15% by mass
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