Preparation of enviromental friendly coating based on henna for the protection of aluminium in seawater

Abstract

Aluminium alloy is known for its exceptional perfonnance in flexible environment. Based on maritime industry, corrosion was occur and depending in various environment. As a solution, natural coating is been used to overcome this problem. The inhibition of the corrosion on aluminium by henna extract in seawater using salt spray was been studied by using coating technique. This studied used plant extract which is henna (Lawsoniainermis). Aluminium plates were coated by henna in different solvent and placed in salt spray for 30 days. The solvents were used as pigment to create new paint or fonnulation before coating samples. The scope of study only focuses for certain material which is aluminium alloy and henna extract. The characterization of the corrosion was tested using Fourier transfonn infrared spectroscopy (ITIR), weight loss method, potentiodynamic polarization (PP), electrochemical impedance spectroscopy (EIS) and scanning electron microscope (SEM).