Nigella sativa: An alternative solution for the corrosion of mild steel in hydrochloric acid medium

The use of plants presents a new field to explore in order to prevent the pollution caused by the employment of synthetic chemical compounds especially in corrosion inhibition. in fact,efficient inhibitors available are toxic and harmful for both human and environment. as a result,studies were conducted to extract molecule with protective ability against the corrosion of metal. extract of tobacco,mangoes,coffee... were used to protect efficiently the steel from corrosive attacks of the media. the object of this work is the study of the inhibitor power of seeds of nigella sativa from the corrosion of mild steel in acidic media by different electrochemical technique. this research has revealed that the aqueous extract of nigella sativa can be used as an inhibitor of the mild steel corrosion in acidic media. it offers a good protection and its efficiency increases with the concentration.