Optimization Of Anodization Parameters For 410 Stainless Steel In Sodium Hydroxide Electrolyte: A Comprehensive Study On The Effects Of Voltage, Temperature, And Electrolyte Concentration On Surface Properties

Abstract

In this study, stainless steel type 410 has been used to determine the influences of voltage, temperature, concentration and time on thickness and characteristics of anodic oxide film. A response surface  methodology using Minitab software (releases 18)  was used to determine the effects of anodizing parameters and optimum conditions for anodized 410 stainless steel. A Constant voltage technique is used to form oxide films   in (35 wt.% of NaOH solution) electrolyte as a function of the anodization voltage of (1-9V),  temperature of ((20)-(80)°C) and anodization time of (20-60 min). The optimum conditions were  voltage (1 V), temperature ((20)°C), and time (60 min). The results of EDS test for optimal conditions confirm the formation of Cr2O3 oxide scale in the treated specimen due to existence of Cr and O elements as major constituents of Cr2O3. For the  anodization specimens , the  surface adopts a  ‘sponge’ like morphology , formation of a homogeneously distributed oxide scale with a porous structure.