Wear and corrosion resistant coatings on surface of cast A356 aluminum alloy by plasma electrolytic oxidation in moderately concentrated aluminate electrolytes

2017 ◽  
Vol 27 (2) ◽  
pp. 336-351 ◽  
Author(s):  
Huan-jun XIE ◽  
Ying-liang CHENG ◽  
Shao-xian LI ◽  
Jin-hui CAO ◽  
Li CAO
Keyword(s):  
Aluminum Alloy ◽  
Plasma Electrolytic Oxidation ◽  
A356 Aluminum Alloy ◽  
Corrosion Resistant ◽  
Wear And Corrosion ◽  
Electrolytic Oxidation ◽  
A356 Aluminum ◽  
Plasma Electrolytic ◽  
Corrosion Resistant Coatings

scholarly journals Surface Modification of Aluminum 6061-O Alloy by Plasma Electrolytic Oxidation to Improve Corrosion Resistance Properties

Coatings ◽  
2020 ◽  
Vol 11 (1) ◽  
pp. 4
Author(s):  
Dmitry V. Dzhurinskiy ◽  
Stanislav S. Dautov ◽  
Petr G. Shornikov ◽  
Iskander Sh. Akhatov
Keyword(s):  
Corrosion Resistance ◽  
Aluminum Alloy ◽  
Aluminum Alloys ◽  
Plasma Electrolytic Oxidation ◽  
Electrochemical Impedance ◽  
High Strength ◽  
Electrolytic Oxidation ◽  
Coating Layers ◽  
Plasma Electrolytic ◽  
High Strength Aluminum Alloys

In the present investigation, the plasma electrolytic oxidation (PEO) process was employed to form aluminum oxide coating layers to enhance corrosion resistance properties of high-strength aluminum alloys. The formed protective coating layers were examined by means of scanning electron microscopy (SEM) and characterized by several electrochemical techniques, including open circuit potential (OCP), linear potentiodynamic polarization (LP) and electrochemical impedance spectroscopy (EIS). The results were reported in comparison with the bare 6061-O aluminum alloy to determine the corrosion performance of the coated 6061-O alloy. The PEO-treated aluminum alloy showed substantially higher corrosion resistance in comparison with the untreated substrate material. A relationship was found between the coating formation stage, process parameters and the thickness of the oxide-formed layers, which has a measurable influence on enhancing corrosion resistance properties. This study demonstrates promising results of utilizing PEO process to enhance corrosion resistance properties of high-strength aluminum alloys and could be recommended as a method used in industrial applications.

Development of Black Corrosion-Resistant Ceramic Oxide Coatings on AA7075 by Plasma Electrolytic Oxidation

2018 ◽  
Vol 72 (1) ◽  
pp. 47-53 ◽  
Author(s):  
Ramesh Babu Nagumothu ◽  
Arunnellaiappan Thangavelu ◽  
Arun Mohan Nair ◽  
Arun Sukumaran ◽  
Tomson Anjilivelil
Keyword(s):  
Plasma Electrolytic Oxidation ◽  
Oxide Coatings ◽  
Corrosion Resistant ◽  
Ceramic Oxide ◽  
Electrolytic Oxidation ◽  
Plasma Electrolytic ◽  
Resistant Ceramic
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