Figures & data
Figure 1. Variation of weight loss with thiamine hydrochloride concentration for copper in 2.5 M HNO3 at 30°C.
Table 1. Percentage inhibition efficiency, corrosion rate, and surface coverage of thiamine of thiamine hydrochloride on copper at 30°C 30 min immersion period.
Figure 2. Variation of percentage inhibition efficiency of thiamine hydrochloride with immersion period.
Figure 3. Langmuir adsorption plot for copper in 2.5 M HNO3 solution containing thiamine hydrochloride at 30°C.
Figure 4. Variation of percentage inhibition efficiency of thiamine hydrochloride with temperature.
Figure 5. Plot of log (θ/1 – θ) versus 1/T at concentrations of 0.5, 1, and 2 mM thiamine hydrochloride.
Table 2. Heat of adsorption, Q ad and the correlation coefficients for thiamine hydrochloride on copper surface in 2.5 M HNO3.
Figure 6. Arrhenius plots for copper in 2.5 M solution with and without thiamine hydrochloride.
Figure 7. Errying plots for copper in 2.5 M solution with and without thiamine hydrochloride.
