The inhibition effect of amino acids and hydroxy carboxylic acids on pitting corrosion of aluminum alloy 7075

Bereket G., YURT A.

CORROSION SCIENCE, vol.43, no.6, pp.1179-1195, 2001 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 43 Issue: 6
  • Publication Date: 2001
  • Doi Number: 10.1016/s0010-938x(00)00135-9
  • Journal Name: CORROSION SCIENCE
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.1179-1195
  • Eskisehir Osmangazi University Affiliated: No

Abstract

Fitting corrosion of aluminum alloy 7075 in 0.05 M NaCl solution at pH values of 4, 5, 7 and 8 were examined by potentiostatic method. It was found that addition of 10(-2) M hydroxy carboxylic acids or amino acids to NaCl solutions cause shifting of E-pit values to noble directions. Amino acids are more effective in shifting E-pit values to noble directions in acidic solutions while hydroxy carboxylic acids are effective in shifting E-pit values to noble directions in neutral or basic solutions.