Investigation of wear, corrosion and tribocorrosion properties of AZ91 Mg alloy coated by micro arc oxidation process in the different electrolyte solutions

2013 ◽  
Vol 528 ◽  
pp. 116-122 ◽  
Author(s):  
Ebru Emine Demirci ◽  
Ersin Arslan ◽  
Kadri Vefa Ezirmik ◽  
Özlem Baran ◽  
Yaşar Totik ◽  
...  
Keyword(s):  
Oxidation Process ◽  
Electrolyte Solutions ◽  
Mg Alloy ◽  
Micro Arc Oxidation

scholarly journals Method for measuring the micro-discharges temperature in the micro-arc oxidation process

2019 ◽  
Vol 1393 ◽  
pp. 012083 ◽  
Author(s):  
P E Golubkov ◽  
E A Pecherskaya ◽  
D V Artamonov ◽  
J V Shepeleva
Keyword(s):  
Oxidation Process ◽  
Micro Arc Oxidation

Electrophysical Model of the Micro-Arc Oxidation Process

2020 ◽  
Vol 62 (11) ◽  
pp. 2137-2144 ◽  
Author(s):  
P. E. Golubkov ◽  
E. A. Pecherskaya ◽  
D. V. Artamonov ◽  
T. O. Zinchenko ◽  
Yu. E. Gerasimova ◽  
...  
Keyword(s):  
Oxidation Process ◽  
Micro Arc Oxidation

scholarly journals Zn- or Cu-Containing CaP-Based Coatings Formed by Micro-arc Oxidation on Titanium and Ti-40Nb Alloy: Part I—Microstructure, Composition and Properties

Materials ◽  
2020 ◽  
Vol 13 (18) ◽  
pp. 4116 ◽  
Author(s):  
Ekaterina G. Komarova ◽  
Yurii P. Sharkeev ◽  
Mariya B. Sedelnikova ◽  
Konstantin A. Prosolov ◽  
Igor A. Khlusov ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Adhesive Strength ◽  
Applied Voltage ◽  
Oxidation Process ◽  
Pure Titanium ◽  
Atomic Ratio ◽  
Linear Increase ◽  
Microcrystalline Structure ◽  
Micro Arc Oxidation ◽  
Alloy Part

Zn- and Cu-containing CaP-based coatings, obtained by micro-arc oxidation process, were deposited on substrates made of pure titanium (Ti) and novel Ti-40Nb alloy. The microstructure, phase, and elemental composition, as well as physicochemical and mechanical properties, were examined for unmodified CaP and Zn- or Cu-containing CaP coatings, in relation to the applied voltage that was varied in the range from 200 to 350 V. The unmodified CaP coatings on both types of substrates had mainly an amorphous microstructure with a minimal content of the CaHPO4 phase for all applied voltages. The CaP coatings modified with Zn or Cu had a range from amorphous to nano- and microcrystalline structure that contained micro-sized CaHPO4 and Ca(H2PO4)2·H2O phases, as well as nano-sized β-Ca2P2O7, CaHPO4, TiO2, and Nb2O5 phases. The crystallinity of the formed coatings increased in the following order: CaP/TiNb < Zn-CaP/TiNb < Cu-CaP/TiNb < CaP/Ti < Zn-CaP/Ti < Cu-CaP/Ti. The increase in the applied voltage led to a linear increase in thickness, roughness, and porosity of all types of coatings, unlike adhesive strength that was inversely proportional to an increase in the applied voltage. The increase in the applied voltage did not affect the Zn or Cu concentration (~0.4 at%), but led to an increase in the Ca/P atomic ratio from 0.3 to 0.7.

scholarly journals Formation and Corrosion Resistance of Micro-Arc Oxidation Coating on Equal-Channel Angular Pressed AZ91D Mg Alloy

Metals ◽  
2016 ◽  
Vol 6 (12) ◽  
pp. 308 ◽  
Author(s):  
Aibin Ma ◽  
Fumin Lu ◽  
Qi Zhou ◽  
Jinghua Jiang ◽  
Dan Song ◽  
...  
Keyword(s):  
Corrosion Resistance ◽  
Mg Alloy ◽  
Micro Arc Oxidation

Micro-arc oxidation of AZ91 Mg alloy: An in-situ electrochemical study

2013 ◽  
Vol 31 ◽  
pp. 42-45 ◽  
Author(s):  
Delphine Veys-Renaux ◽  
Emmanuel Rocca ◽  
Gérard Henrion
Keyword(s):  
Electrochemical Study ◽  
Mg Alloy ◽  
Micro Arc Oxidation

Influence of EDTA-2Na Concertration on the Microstructure and Corrosion Behaviors of Mg-Al-Y Alloy

2015 ◽  
Vol 727-728 ◽  
pp. 201-204
Author(s):  
Yun Long Zhang ◽  
Mu Qin Li ◽  
Ping Liao ◽  
Yu Min Zhang
Keyword(s):  
Corrosion Resistance ◽  
Electrolyte Solution ◽  
Oxidation Process ◽  
Corrosion Current ◽  
Positive Potential ◽  
Micro Arc Oxidation ◽  
Corrosion Behaviors ◽  
Oxidation Technology ◽  
Structural Surface ◽  
Polarisation Measurements

In this paper,the micro-arc oxidation technology were utilized to fabricated the oxidation coating in order to resolve the corrosion resistance of the Mg-Al-Y alloy. The EDTA-2Na solution was introduced into the electrolyte solution for improving the coating corrosion properties.After the micro-arc oxidation process, phase structural, surface morphology and corrosion resistance of the MAO coating of Mg-Al-Y alloy were performed by XRD, SEM and Potentiodynamic polarisation measurements. The introduce of EDTA-2Na in the electrolyte solution improve the positive potential and reduced the corrosion current, which would improve the corrosion resistance properties of the Mg-Al-Y alloy.

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