Synergistic influence of inorganic oxides (ZrO2 and SiO2) with N2H4 to protect composite coatings obtained via plasma electrolyte oxidation on Mg alloy

2017 ◽  
Vol 19 (3) ◽  
pp. 2372-2382 ◽  
Author(s):  
Wail Al Zoubi ◽  
Muhammad Prisla Kamil ◽  
Young Gun Ko
Keyword(s):  
Composite Coatings ◽  
Mg Alloy ◽  
Inorganic Oxides ◽  
Plasma Electrolyte ◽  
Coating Layers ◽  
Plasma Electrolyte Oxidation ◽  
Functionalized Coatings ◽  
Electrolyte Oxidation

The addition of nanoparticles to the coating layers provided an electrochemical pathway to generate functionalized coatings.

The competitive mechanism of plasma electrolyte oxidation for the formation of magnesium oxide bioceramic coatings

2018 ◽  
Vol 5 (7) ◽  
pp. 15677-15685 ◽  
Author(s):  
Arezoo Ghanbari ◽  
Aidin Bordbar Khiabani ◽  
Ali Zamanian ◽  
Benyamin Yarmand ◽  
Masoud Mozafari
Keyword(s):  
Magnesium Oxide ◽  
Plasma Electrolyte ◽  
Competitive Mechanism ◽  
Plasma Electrolyte Oxidation ◽  
Bioceramic Coatings ◽  
Electrolyte Oxidation

Effect of nano-hydroxyapatite and dutycycle on the structure and corrosion performance of plasma electrolyte oxidation coatings in simulated body fluid on Ti–6Al–4 V

2018 ◽  
Vol 232 (23) ◽  
pp. 4229-4236 ◽  
Author(s):  
B Barooghi ◽  
M Sheikhi ◽  
A Amiri
Keyword(s):  
Corrosion Resistance ◽  
Simulated Body Fluid ◽  
Duty Cycle ◽  
Body Fluid ◽  
Oxide Coatings ◽  
High Concentration ◽  
Plasma Electrolyte ◽  
Plasma Electrolyte Oxidation ◽  
Electrolyte Oxidation

The formation of titanium oxide coatings on Ti–6Al–4 V substrates by plasma electrolyte oxidation and the corrosion behavior of coatings in simulated body fluid were investigated. The effect of the addition of nano-hydroxyapatite particles to electrolyte and duty cycle of plasma electrolyte oxidation on the coating thickness and its surface morphology was studied. Phase structure and morphology of coated parts were studied using X-ray diffraction patterns and scanning electron microscopy. Wear and corrosion resistance were compared in coated and uncoated samples. Biocompatibility of coating was investigated using in vitro immersion in simulated body fluid. It was found that the plasma electrolyte oxidation forms dense and compact oxide coatings with slightly porous outer layers. Formation of apatite phase on the surface of coated samples was examined after immersion in simulated body fluid for two weeks. The corrosion resistance of plasma electrolyte oxidation coatings formed in electrolyte with high concentration of nano-hydroxyapatite and high duty cycle (60%) is better than the corrosion resistance of plasma electrolyte oxidation coatings formed in other electrolytes. Energy-dispersive spectroscopy results indicate the formation of a complete and preservative coating on Ti base materials.

Film Formation via Plasma Electrolyte Oxidation of Ti and Ti-5Mo-4V-3Al Alloy in High Alkaline Solutions

2010 ◽  
Vol 297-301 ◽  
pp. 1167-1170 ◽  
Author(s):  
M. Asadi ◽  
M. Attarchi ◽  
M. Vahidifar ◽  
A. Jafari
Keyword(s):  
Film Formation ◽  
Alloy Layer ◽  
Alkaline Solutions ◽  
Ti Alloy ◽  
Plasma Electrolyte ◽  
Phosphate Ions ◽  
Plasma Electrolyte Oxidation ◽  
Different Characteristics ◽  
Phosphate Solutions ◽  
Electrolyte Oxidation

This work investigates the characteristics of oxide films formed on Ti and the Ti alloy through a plasma electrolyte oxidation (PEO) process in highly alkaline medium in the presence or absence of phosphate ions. The obtained coatings showed different characteristics when they formed in high alkaline phosphate solutions particularly was anatase for Ti and rutile/titanium phosphate for the Ti alloy layer. Films formed in aqueous solution without KOH caused a reduction in current density and also reduced the number of microarcs, while in electrolytes with high OH- concentration, the current was low and the density of sparks was significant.

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