System linearity quantification for in-situ impedance spectroscopy of plasma electrolytic oxidation

2013 ◽  
Vol 27 ◽  
pp. 137-140 ◽  
Author(s):  
A. Yerokhin ◽  
E.V. Parfenov ◽  
C.J. Liang ◽  
V.R. Mukaeva ◽  
A. Matthews
Keyword(s):  
Impedance Spectroscopy ◽  
Plasma Electrolytic Oxidation ◽  
Electrolytic Oxidation ◽  
Plasma Electrolytic

In Situ Formation of ZrO2-Y2O3-Containing Ceramic Coating on Magnesium Alloy by Plasma Electrolytic Oxidation

2011 ◽  
Vol 295-297 ◽  
pp. 1684-1690
Author(s):  
Hai He Luo ◽  
Qi Zhou Cai
Keyword(s):  
Corrosion Resistance ◽  
Magnesium Alloy ◽  
Plasma Electrolytic Oxidation ◽  
Ceramic Coating ◽  
Electrochemical Corrosion ◽  
Dense Layer ◽  
X Ray ◽  
Electrolytic Oxidation ◽  
Plasma Electrolytic

A ZrO2-Y2O3-containing composite ceramic coating was firstly in situ prepared on AZ91D magnesium alloy by plasma electrolytic oxidation (PEO) technique in an alkaline silicate-containing electrolyte. The morphology, chemical composition and corrosion resistance of the PEO coating were investigated by environmental scanning electron microscopy (ESEM), X-ray diffractometer (XRD), energy dispersive X-ray (EDX) spectrometer, dropping corrosion and electrochemical corrosion test. The results showed that the ceramic coating consisted of two distinct structural layers: an outer loose layer and an inner dense layer; it was composed of t-ZrO2, Y2O3, SiO2and some magnesium compounds, such as MgO,MgF2and Mg2SiO4. In addition, the ceramic coating also showed excellent dropping and electrochemical corrosion resistance, which was mainly attributed to its special phase composition and microstructure.

Plasma Electrolytic Oxidation Coatings on Titanium Formed with Microsecond Current Pulses

2014 ◽  
Vol 213 ◽  
pp. 149-153 ◽  
Author(s):  
Sergey V. Gnedenkov ◽  
Sergey L. Sinebryukhov ◽  
Artyom М. Puz' ◽  
Andrey S. Gnedenkov ◽  
Igor E. Vyaliy ◽  
...  
Keyword(s):  
Electrochemical Impedance Spectroscopy ◽  
Impedance Spectroscopy ◽  
Plasma Electrolytic Oxidation ◽  
Electrochemical Impedance ◽  
Chemical Properties ◽  
Power Source ◽  
Current Pulses ◽  
Physico Chemical ◽  
Electrolytic Oxidation ◽  
Plasma Electrolytic

The effects of shape and duration of the current pulses on the physico-chemical properties of the oxide layers on titanium formed by plasma electrolytic oxidation were examined. It was shown that in the investigated conditions transistor power source possess an advantage in comparison with thyristor one. Electrochemical properties of the heterooxide structures were examined by electrochemical impedance spectroscopy and potentiodynamic polarization methods.

In-situ growth of nanostructured catalytic coatings via one-step plasma electrolytic oxidation

2019 ◽  
Vol 479 ◽  
pp. 738-744
Author(s):  
Xiwen Yu ◽  
Zongcheng Yan ◽  
Honglei Qin ◽  
Mingyue Wu ◽  
Aili Wang ◽  
...  
Keyword(s):  
Plasma Electrolytic Oxidation ◽  
In Situ Growth ◽  
Electrolytic Oxidation ◽  
One Step ◽  
Plasma Electrolytic
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