Effect of Caffeine-Zn2+ System in Preventing Corrosion of Carbon Steel in Well Water
Figure 7
Fluorescence spectrum of (a) caffeine-Fe2+-malic acid complex in solution, (b) protective film formed on the metal surface of carbon steel after immersion in well water containing 200 ppm of caffeine, 50 ppm of Zn2+, and 25 ppm of malic acid.
