This work examined the influence of dual incorporation MoO2 and SiO2 on corrosion behavior pure titanium treated via plasma electrolytic oxidation (PEO). To achieve this purpose, substrate was PEO in an alkaline-molybdate electrolyte without with nanoparticles. The microstructural observation revealed that addition nanoparticles into during helped to seal structural defects coating so a rougher...

A controllable degradable coating on Mg alloy based plasma electrolytic oxidation (PEO) process is reported for the first time. The results show that introduction of silica nanoparticles into PEO electrolytes leads to their reactive incorporation in coatings and thus influencing degradation behavior. Dissolution amorphous phases facilitates chemical reaction with components simulated body fluid...

Plasma electrolytic oxidation (PEO) was a promising surface treatment for light metals to tailor an oxide layer with excellent properties. However, porous coating structure was generally exhibited due to excessive plasma discharges, restraining its performance. The present work utilized ethylenediaminetetraacetic acid (EDTA) and Cu-EDTA complexing agents as electrolyte additives that alter the ...

Open-celled aluminum foams with different pore sizes were fabricated. A plasma electrolytic oxidation (PEO) treatment was applied on the aluminum foams to create a layer of ceramic coating. The sound absorption coefficients of the foams were measured by an impedance tube and they were calculated by a transfer function method. The experimental results show that the sound absorption coefficient o...

Original scientific paper Plasma Electrolytic Oxidation (PEO) of NiTi alloy was studied in the electrolyte consisting generally of concentrated orthophosphoric acid with an addition of copper II nitrate. The PEO process was used to obtain a nanostructured coating on the Nitinol surface. The surface layer analyses methods, such as scanning electron microscopy (SEM) with the energy-dispersive X-r...

Plasma electrolytic oxidation (PEO) is a potential technique to coat a dense ceramic oxide layer on the surface of light metals, e.g. Al, Mg or Ti. In our PEO process, Al-pieces are emerged in aqueous solutions containing dissolved silicate/alkali, e.g. KOH/NaOH and K 2 SiO 3 /Na 2 SiO 3. Using a DC-pulsed system with 20Hz, micro-arcs are induced at the surface of the pieces randomly and plasma...

This study looked into the influence of iron nitrate (Fe(NO3)3 on corrosion behavior a 6061 Al alloy treated by plasma electrolytic oxidation coating (PEO). PEO coatings were fabricated samples under AC conditions utilizing an alkaline-aluminate electrolyte containing 0 and 5 gr Fe(NO3)3. Surface examination demonstrated that some Fe2O3 particles effectively integrated layer produced in solutio...

Plasma electrolytic oxidation (PEO) was applied to functionalise the surface of AA2024 alloy. A potassium titanium-oxide oxalate dihydrate based aqueous electrolyte used, which allowed direct formation a TiO2 layer on aluminium alloy substrate. The effect PEO treatment time and additional presence anatase particles in solution its properties (corrosion, wear photocatalytic activity) were invest...

A surface treatment process, composed of plasma electrolytic oxidation (PEO) and sealing by temporary oil preservation system containing corrosion inhibitors, was performed on AZ31 magnesium alloy in order to improve its resistance environments chlorides. Both atmospheric immersion conditions were evaluated electrochemical tests 0.1M NaCl solution together with salt spray test according STN EN ...