Aluminum anodic behavior at neutral electrolytes with inorganic and organic additives

摘要

The comparative data about aluminum destruction in series of electrolytes (pH=4.2-8.5) with varying at wide concentration range of inorganic (sodium sulfate, potassium nitrate, sodium chloride) and organic (glycine, a-alanine) substances additives was analyzed at room temperature. It was established the analogy of aluminum anodic behavior in mediums with additives of sodium chloride (pH=4.8-5.6) and amino acids (pH 8.5) where metal was exposed to local activation. The obtained experimental results were interpreted according to modern theories of competitive adsorption and nucleophilic substitution.