The contribution to coating quality evaluation by statistical methods

Abstract

The paper deals with evaluation of quality of electrolytic coating by statistical methods. Electrolytic solution was created by ZnCl2 within interval of 0,062 mol•l-1to 1,01 mol•l-1, NaCl ranging from 7,01 mol•l-1 to 60,66 mol•l-1, H3BO3 ranging from 0,11 mol.l-1 to 0,89 mol.l-1. Physical conditions of the experiment are represented by the electrolyte temperature ranging from - 3,78 °C to 43,78 °C, electroplating period ranging from 3,11 to 26,98 min and voltage ranging from 1,62 V to 6,38 V. Steel S355J0 was used as an experimental material. The results showed that zinc chloride volume contained in the electrolyte does not produce any influence on resulting quality of zinc coating.

Keywords

• coating
• galvanic zinc coating
• quality
• statistical analysis
• design of experiments