Effect of Amino Acids on the Corrosion and Metal Release from Copper and Stainless Steel

Copper (Cu) and stainless steel 316 L are widely used for biomedical applications, such as intrauterine devices orthopedic/dental implants. Amino acids abundantly present in biological environments. We investigated the influence of select amino on corrosion Cu under naturally aerated deaerated conditions using a phosphate-free buffer. increased both aeration at pH 7.4. release was also significantly (up to 18-fold) presence acids, 7.4 37 °C 24 h conditions. Speciation modelling predicted generally solubility L, metal similar comparison, released about 1,000-fold lower amounts metals than did remained passive with no change surface oxide composition or thickness. However, chromium 52-fold), lysine, iron cysteine, while nickel molybdenum unaffected. This not by solution speciation modelling. The analysis confirmed adsorption and, extent, coupons.