Wear Characteristics of Binary Mg-Al, Si, Zn Alloys Coated by Plasma Electrolytic Oxidation Method

2007 ◽  
pp. 763-766
Author(s):  
Byung Heum Song ◽  
Ye Lim Kim ◽  
Si Young Chang
Keyword(s):  
Plasma Electrolytic Oxidation ◽  
Oxidation Method ◽  
Wear Characteristics ◽  
Electrolytic Oxidation ◽  
Plasma Electrolytic ◽  
Zn Alloys

Wear Characteristics of Binary Mg-Al, Si, Zn Alloys Coated by Plasma Electrolytic Oxidation Method

2007 ◽  
Vol 124-126 ◽  
pp. 763-766 ◽  
Author(s):  
Byung Heum Song ◽  
Ye Lim Kim ◽  
Si Young Chang
Keyword(s):  
Wear Resistance ◽  
Plasma Electrolytic Oxidation ◽  
Coating Layer ◽  
Mg Alloys ◽  
Wear Properties ◽  
Oxidation Method ◽  
Electrolytic Oxidation ◽  
Plasma Electrolytic ◽  
Zn Alloy ◽  
Zn Alloys

Pure Mg, binary Mg-5.6wr%Al, Mg-1.0wt%Si and Mg-7.5wt%Zn alloys were coated by plasma electrolytic oxidation (PEO) method, and their wear properties were investigated and discussed based on surface roughness, thickness and component of coatings. All coatings showed porous layer with some volcano top-like pores on the surface and the non-uniform thickness. The coatings on Mg-Al, Mg-Si and Mg-Zn alloys were composed of primarily MgO and Al2O3, SiO2, ZnO, respectively. The coating layer on Mg-Si alloy was thicker than that of Mg-Al and Mg-Zn alloys, while it was less rough. The wear resistance of pure Mg and Mg alloys was improved by PEO method and the coated Mg alloys showed better wear resistance compared to the coated pure Mg. In particular, the coated Mg-Zn alloy revealed the best wear resistance, while the coated Mg-Si alloy had poor wear resistance despite much thicker coating layer.

Inhibitor-Containing Composite Coatings on Mg Alloys: Corrosion Mechanism and Self-Healing Protection

2015 ◽  
Vol 245 ◽  
pp. 89-96 ◽  
Author(s):  
Andrey S. Gnedenkov ◽  
Sergey L. Sinebryukhov ◽  
Dmitry V. Mashtalyar ◽  
Sergey V. Gnedenkov
Keyword(s):  
Plasma Electrolytic Oxidation ◽  
Composite Coatings ◽  
Healing Process ◽  
Corrosion Mechanism ◽  
Self Healing ◽  
Protective Properties ◽  
Oxidation Method ◽  
Electrolytic Oxidation ◽  
Plasma Electrolytic ◽  
Electrode Technique

The way of self-healing coating formation at the surface of magnesium alloys by means of plasma electrolytic oxidation method (PEO) with subsequent filling of the obtained layer with inhibitor has been suggested. The electrochemical properties of such coatings have been described in details. The obtained experimental results indicate that the protective properties of the samples with inhibitor-containing coating were increased (IC = 8.6×10–8 A/cm2) in comparison with the samples without coating (5.3×10–5 A/cm2) and the base coating obtained by plasma electrolytic oxidation method (PEO) (3.4×10–7 A/cm2). The local scanning electrochemical methods of surface investigation, notably Scanning Vibrating Electrode Technique (SVET) and Scanning Ion-Selective Electrode Technique (SIET) were used for determining the kinetics and mechanism of the self-healing process. The treatment by the solution containing 8-hydroxyquinoline, which inhibits the corrosion process, enables one to increase the protective properties of the composite coating in 30 times in the corrosion-active environment in comparison with the base PEO-coating and avert the intensive destruction of the material.

Plasma electrolytic oxidation of binary Mg-Al and Mg-Zn alloys

2017 ◽  
Vol 323 ◽  
pp. 72-81 ◽  
Author(s):  
K.O. Gunduz ◽  
Z.C. Oter ◽  
M. Tarakci ◽  
Y. Gencer
Keyword(s):  
Plasma Electrolytic Oxidation ◽  
Electrolytic Oxidation ◽  
Plasma Electrolytic ◽  
Zn Alloys

Influence of Magnetostatic Interactions on Magnetization Process of Iron-Containing Coatings, Produced Using the Plasma Electrolytic Oxidation Method

2014 ◽  
Vol 215 ◽  
pp. 200-203 ◽  
Author(s):  
Peter V. Kharitonskii ◽  
Anatoly Frolov ◽  
Sergey A. Boev ◽  
Vladimir S. Rudnev ◽  
I.A. Tkachenko ◽  
...  
Keyword(s):  
Magnetic Moment ◽  
Plasma Electrolytic Oxidation ◽  
Magnetic Moments ◽  
Remnant Magnetization ◽  
Magnetization Process ◽  
Magnetostatic Interaction ◽  
Oxidation Method ◽  
Superparamagnetic Particles ◽  
Electrolytic Oxidation ◽  
Plasma Electrolytic

In this paper we research the process of magnetization of iron-containing coatings obtained on aluminum and titanium plasma electrolytic oxidation. It is shown that the formation of a remnant magnetic moment mainly determined by the magnetostatic interaction particles (phases). This interaction leads to a decrease of the blocking volume of particles (phases). Thus, a large number of superparamagnetic particles (phases) obtain stable magnetic moments and are involved in creating of the remnant magnetization of the sample.

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