Surface Protection of Carbon Steel by Hexanesulphonic Acid-Zinc Ion System

Table 2

The corrosion inhibition efficiencies and the corresponding corrosion rates (mm/year) of SHXS-Zn²⁺ system.

Inhibitor SHXS; (mol/L) ×10^−3	Zn^2+ (mol/L)
	0		5.2×10^−5		1.04×10^−4
	IE; %	CR; mm/year	IE; %	CR; mm/year	IE; %	CR; mm/year
0	—	0.1127	12	0.0992	21	0.0890
0.27	10	0.1014	26	0.0834	57	0.0642
0.54	13	0.0981	29	0.0801	64	0.0721
0.81	19	0.0913	32	0.0766	71	0.0327
1.08	26	0.0834	36	0.0721	74	0.0293
1.35	31	0.0778	40	0.0676	83	0.0192