The corrosion inhibition properties of 4-(2-hydroxyphenyl)-but-3-en-2-one (HPB) in 1M NaOH solutions were studied using chemical and electrochemical techniques. The inhibition efficiency was found to increase with increasing concentration and decrease with increasing temperature. The corrosion inhibition data have been analyzed using different isotherms like Langmuir, Temkin and El-Awady’s isotherms. Polarisation curves reveal that HBP act as the mixed type inhibitor. Electrochemical impedance exhibits a large capacitive loop at high frequencies followed by an inductive loop at medium frequencies. The surface morphology of aluminium in the presence and absence of inhibitor was studied by using SEM images.
