Synergistic corrosion inhibitor of carbon steel by dihydroxy benzyl phosphonic acid -Zn2+ system in O.5 M H2SO4: Experimental and theoretical studies. IJCT [Internet]. 2023 May 30 [cited 2026 May 16];29(4):402-11. Available from: https://or.niscpr.res.in/index.php/IJCT/article/view/2037