Effect of Some Additives on the Zinc Electrodeposition Process

Abstract

Industrial processes look for maximum production with deposits of high purity, good physical apearence AF and high profitability. Problems during the deposit as a low-quality, low current efficiency EC and high energy consumption CE are present. One solution has been the use of organic additives in small quantities. This work sought to optimize the process with the addition of additives to the electrolyte of ZnSO 4 analyzing the effects caused on the basis of the EC, CE and AF. Furthermore, X-Ray diffraction was used and scanning electron microscopy to analyze the morphology of the crystals. Additives used were tetramethylammonium chloride CTMA, tetrabutylammonium chloride CTBA, sodium dodecyl sulfate (DSS), decylamine (DA) and 1-decanol (DE). With additives of short-chain, we obtained good results in relation to the AF, EC, CE and orientation of the crystals deposited.