فهرس المقالات Plasma Electrolytic Oxidation (PEO)

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  1 - Effect of Coating Process Parameters on Corrosion Behavior of Ti-6Al-4V
  Mohammad Hossein Majidi Amin Rabiezadeh Ahmad Afsari
  Titanium and its alloys (Ti-6Al-4V) are considered to be among the most promising engineering materials due to a unique combination of high strength to weight ratio, melting temperature, corrosion resistance, and biocompatibility. Anodizing is one of the coating methods أکثر

  Titanium and its alloys (Ti-6Al-4V) are considered to be among the most promising engineering materials due to a unique combination of high strength to weight ratio, melting temperature, corrosion resistance, and biocompatibility. Anodizing is one of the coating methods that increases corrosion resistance and wear resistance and provides better adhesion of paint primers mostly applied to protect Al, Ti, Mg, and their alloys. The novel Plasma Electrolytic Oxidation (PEO) technique is gaining increased attention for depositing thick, dense, corrosion resistant, and hard ceramic coating on valuable metals (Al, Ti, and Mg). The aim of this research is a comparison between the corrosion behavior of anodized and plasma electrolytic oxidized Ti-6Al-4V at different voltages. The surface morphology, thickness, and phase composition of coatings were investigated using a scanning electron microscope and X-ray diffraction. The potentiodynamic polarization test was used to determine the corrosion behavior of the specimens. Results indicated that increasing of corrosion resistance by tests anodized sample at 50 V at 15 minutes and PEO sample at 375 V at 10 minutes. تفاصيل المقالة
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  2 - Investigating the Effect of Changing Plasma Electrolytic Oxidation on the Scratch Degradation of Ti-6Al-4V
  M.R. Tavighi A. Rabieifar O. Ashkani A. Asaadi Zahraei
  In this research, plasma electrolytic oxidation (PEO) was prepared at duty voltage of 350 and 450 V and processing time of 5 and 10 minutes on Ti-6Al-4V alloy in Na2SiO3 + KOH electrolyte. Then, the adhesion strength and microstructural degradation of the coating surfac أکثر

  In this research, plasma electrolytic oxidation (PEO) was prepared at duty voltage of 350 and 450 V and processing time of 5 and 10 minutes on Ti-6Al-4V alloy in Na2SiO3 + KOH electrolyte. Then, the adhesion strength and microstructural degradation of the coating surface were investigated through a constant load scratch test, field-emission scanning electron microscope (FE-SEM), and X-ray diffraction (XRD), respectively. The results showed that while increasing the processing time and duty voltage, the density of porosity and the amount of rutile on the coating surface increased. Meanwhile, microstructure degradations like delamination, gross spallation, and buckling spallation decreased due to increased adhesion strength. This resulted from an increase in voltage and processing time. تفاصيل المقالة