Determination of Sulfuric Acid in Anodizing and Hardcoating Solutions by Acid-Base Titration Using a pH Meter.

摘要

The chemical literature lacks an acceptable analytical method for adequately monitoring sulfuric acid in aluminum finishing solutions during the finishing processes. These solutions include anodizing and hardcoating solutions. In this report, an improved method is presented that provides acceptable analysis and monitoring of this acid during the finishing processes. The optimum operating ranges of this acid are 90 to 150 g/l and 120 to 150 g/l for the respective anodizing and hardcoating solutions. The resulting precisions are in the range of 1 to 3 g/l, providing adequate monitoring of these metal finishing solutions supported by seven years of testing. Keywords: Chemical analysis; Sulfuric acid; Anodizing solutions; Hardcoating solutions; Aluminum finishing solutions; Acid-base titration; ph Meter finishes. (KT)