A comparison of plasma electrolytic oxidation of Ti-6Al-4V and Zircaloy-2 alloys in a silicate-hexametaphosphate electrolyte

An improvement of the wear and corrosion resistances of AZ31 magnesium alloy by plasma electrolytic oxidation in a silicate–hexametaphosphate electrolyte with the suspension of SiC nanoparticles

“…All coatings contain relative abundant amount of amorphous materials, which can be inferred from the broad peak between~18-40°(in 2θ). The presence of amorphous materials has also been found for the PEO coatings on a Ti-6Al-4V alloy, using the electrolyte of the same composition as that of the present study [6,22]. The amorphous materials are possibly silica and phosphorous containing species according our previous studies [6,22].…”

“…In the present paper, the effect of SiC nanoparticles on properties of the PEO coatings on AZ31 magnesium alloy has been investigated in a silicate-hexametaphosphate electrolyte which has been used to coat Ti-6Al-4V and zircaloy-2 alloys in our previous papers [6,22]. The incorporation of SiC nanoparticles into the coatings has been well characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM) and the coatings with the incorporation of the SiC nanoparticles show much improved wear resistance.…”

“…PEO, which evolved from traditional anodization, is a relatively new surface treatment method for enhancing the surface properties of the so-called valve metals (Al, Mg, Ti, Zr, etc.) and their alloys by forming relative thick ceramic coatings under dielectric breakdown voltages [6].…”

A universal electrolyte for the plasma electrolytic oxidation of aluminum and magnesium alloys

“…They melt and modify the growing oxide layer, changing its structure and making it harder and denser [1]. Different electrolytes and electrical regimes for the PEO treatment of aluminum [2], magnesium [3], titanium [4], and several other alloys [5] can be used to produce hard corrosion-resistant coatings [6].…”

Anodic Oxide Films Formed on AZ31 Magnesium Alloy by Plasma Electrolytic Oxidation Method in Electrolytes Containing Various NaF Concentrations

“…The nodular structure is not the same shape as those reported in the literature [23,24] because small size pores are observed within the nodules. The nodular structure observed in this work rather resembles the pancake structure where a pore is located at its center [24,[25][26][27].…”