Inhibiting effect of seed extract of Abrus precatorius on corrosion of aluminium in sodium hydroxide

Economic losses due to corrosion are direct, as well as, indirect and affect the economy of country. Corrosion inhibitors are one of the widely used methods to control corrosion. Particular advantage of corrosion inhibitor is that often can be implemented or changed in situation without disturbing a process. Due to toxic nature and high cost of some inhibitors currently in use it is nearly to develop environmentally acceptable and less expensive inhibitors. Natural product can be considered as a good source for this purpose. An evaluation of effective performance of seed extract of abrusprecatorius on corrosion inhibition of aluminium in sodium hydroxide at ambient temperature has been made. Conventional weight loss and polarization measurements techniques were used for evaluation. Surface coverage values were tested graphically for suitable adsorption isotherms.