Electrochemical Surface Treatment for Tailored Porous Structures

Plasma electrolytic oxidation (PEO) was used to establish a porous metal oxide layer on various titanium and zirconium workpieces in the form of wires, tubes, 3D-printed structures. The ultimate goal work create with desired characteristics over catalyst support or membrane structures improve performance targeted high-temperature catalytic conversion separation applications. In doing so, it ensured that PEO-treated could provide morphology, thickness, porosity needed for final processing step, which is usually conventional coating method. This addresses limitations ceramic structures, including their mechanical resistance, thermal conductivity, potential being functionalized utilized entire experimental run carried out using 2 kilowatt (maximum output) AC-power source maximum current limit 6.5 Ampere while applying constant (potentiostatic) monitoring fluctuation. Depending surface areas samples, applied ranged from 200 V 260 V. features fresh composites, morphology phases, were studied characterization techniques such as SEM, EDX, XRD. time required observe spark discharge shortened by tuning PEO parameters, gradually increasing potential. This, turn, allowed longer treatment and, eventually, more control texture. EDX analysis elemental composition indicated contribution electrolyte-deposited components increases when voltage accompanied an increase extent oxidation. samples displayed relatively intense discharges, especially comparison Zirconium wires. coated via standard wet-coating techniques.