Author(s):
1. Nebojša Vasiljević, Faculty of Technology - University of East Sarajevo, Republic of Srpska, Bosnia and Herzegovina
2. Marija Mitrović, Faculty of Technology - University of East Sarajevo, Republic of Srpska, Bosnia and Herzegovina
3. Snježana Vučićević, Republic of Srpska, Bosnia and Herzegovina
4. Danijel Milošević, Republic of Srpska, Bosnia and Herzegovina
5. Milorad Tomić, University of East Sarajevo, Faculty of Technology, Republic of Srpska, Bosnia and Herzegovina
6. Stana Stanišić, Republic of Srpska, Bosnia and Herzegovina

Abstract:
In this paper, the influence of temperature, current density, as well as the concentration of CrO3 and H2SO4 on the cathodic current utilization, thickness and roughness of electrochemical chromium coatings in industrial and laboratory conditions was investigated. The influence of current density was examined at a constant bath temperature of 60°C for 30 minutes at current densities of 35, 40, 45, 50 and 55 A/dm2. To determine the influence of temperature, a constant current density of 50A/dm2 was used at bath temperatures of 45, 50, 55 and 60°C. The optimization of the experimentally obtained results was done using the MINITAB 21 software. It was found that the optimal parameters for the electrochemical deposition of hard chromium coatings are: temperature: 50.45-50.98°C, current density 38.17-40.66A/dm2 and electrolyte concentration 500g/dm3 CrO3 and 5g/dm3 H2SO4.

Key words:
electrochemical deposition,current density,roughness,current utilization,coating thickness,U ovom radu ispitivan je uticaj temperature,gustine struje kao i koncentracije CrO3 i H2SO4 na katodno iskorišćenje struje,debljinu i hrapavost elektrohemijskih prevl

Thematic field:
SYMPOSIUM A - Science of matter, condensed matter and physics of solid states

Date of abstract submission:
20.08.2023.

Conference:
Contemporary Materials 2023 - Savremeni materijali

Applied paper from author