The Regeneration Cycle of Cobalt Chemical Conversion Waste Liquid on Aluminum Alloys

<p>In this research, the regeneration cycle of cobalt chemical conversion waste liquid, the effects of oxidizing agents on solution service life, and the influence of oxidizing agents on the treatment of waste liquid was studied by the electrochemical performance test. The scanning electron microscopy (SEM) and electrochemical properties analysis was used to study conversion coatings. It was determined that the best oxidizing agent for the cobalt chemical conversion waste liquid was 9 g/L KBrO₃. Conversion coatings were thicker and had a higher density when the specific gravity of reclaimed liquid and stock solution was between 1:2 and 1:1.</p>

Abstract licence: CC BY

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