Preparation and properties of ceramic coating on Q235 carbon steel by plasma electrolytic oxidation

2009 ◽  
Vol 9 (5) ◽  
pp. 1067-1071 ◽  
Author(s):  
Yunlong Wang ◽  
Zhaohua Jiang ◽  
Zhongping Yao
Keyword(s):  
Carbon Steel ◽  
Plasma Electrolytic Oxidation ◽  
Ceramic Coating ◽  
Electrolytic Oxidation ◽  
Q235 Carbon Steel ◽  
Plasma Electrolytic

Preparation of Fenton-like coating catalyst on Q235 carbon steel by plasma electrolytic oxidation in silicate electrolyte

2016 ◽  
Vol 307 ◽  
pp. 1315-1321 ◽  
Author(s):  
Jiankang Wang ◽  
Chunxiang Li ◽  
Zhongping Yao ◽  
Min Yang ◽  
Yajing Wang ◽  
...  
Keyword(s):  
Carbon Steel ◽  
Plasma Electrolytic Oxidation ◽  
Electrolytic Oxidation ◽  
Q235 Carbon Steel ◽  
Plasma Electrolytic

Characterization of Graphite Containing Ceramic Coating Prepared on Carbon Steel by Plasma Electrolytic Oxidation

2012 ◽  
Vol 271-272 ◽  
pp. 46-49 ◽  
Author(s):  
Yun Long Wang ◽  
Miao Wang ◽  
Ming Zhou ◽  
Zhao Hua Jiang
Keyword(s):  
Carbon Steel ◽  
Current Density ◽  
Bonding Strength ◽  
Plasma Electrolytic Oxidation ◽  
Substrate Surface ◽  
Ceramic Coatings ◽  
Electrolytic Oxidation ◽  
Q235 Carbon Steel ◽  
Current Densities ◽  
Plasma Electrolytic

Ceramic coatings containing graphite were prepared on Q235 carbon steel by plasma electrolytic oxidation (PEO) in aluminate electrolyte with graphite dispersed in electrolyte. The microstructure and properties of the coatings including phase composition, surface and cross section morphology, thickness and bonding strength were characterized. The results showed that the coating consisted of FeAl2O4, Fe3O4 and a certain amount of graphite. The coating was typically characterized by micro pores and ball-shaped round grains distributed on the surface. With increasing the treating current density, the pores became bigger and the ball-shaped round grains became more. Coatings obtained with various current densities showed a good interface between the coating and substrate. The bonding strength of the coatings decreased a little when increasing the current densities, the values of which were all above 20MPa. The coating grew both inwards and outwards to the substrate surface. With increasing the treating current density, the consumption of substrate gradually increased but the whole thickness was not strongly affected by the current density and the value was about 115 μm.

Preparation of a novel yellow ceramic coating on Ti alloys by plasma electrolytic oxidation

2016 ◽  
Vol 307 ◽  
pp. 1297-1302 ◽  
Author(s):  
Yanli Jiang ◽  
Jiankang Wang ◽  
Bing Hu ◽  
Zhongping Yao ◽  
Qixing Xia ◽  
...  
Keyword(s):  
Plasma Electrolytic Oxidation ◽  
Ceramic Coating ◽  
Ti Alloys ◽  
Electrolytic Oxidation ◽  
Plasma Electrolytic

scholarly journals Fabrication and Characterization of Ceramic Coating on Al7075 Alloy by Plasma Electrolytic Oxidation in Molten Salt

Coatings ◽  
2020 ◽  
Vol 10 (10) ◽  
pp. 993
Author(s):  
Alexander Sobolev ◽  
Tamar Peretz ◽  
Konstantin Borodianskiy
Keyword(s):  
Corrosion Resistance ◽  
Molten Salt ◽  
Plasma Electrolytic Oxidation ◽  
Ceramic Coating ◽  
Electrochemical Impedance ◽  
Current Frequency ◽  
Electrolytic Oxidation ◽  
Fabrication And Characterization ◽  
Plasma Electrolytic

The fabrication of a ceramic coating on the metallic substrate is usually applied to achieve the improved performance of the material. Plasma electrolytic oxidation (PEO) is one of the most promising methods to reach this performance, mostly wear and corrosion resistance. Traditional PEO is carried out in an aqueous electrolyte. However, the current work showed the fabrication and characterization of a ceramic coating using PEO in molten salt which was used to avoid disadvantages in system heating-up and the formation of undesired elements in the coating. Aluminum 7075 alloy was subjected to the surface treatment using PEO in molten nitrate salt. Various current frequencies were applied in the process. Coating investigations revealed its surface porous structure and the presence of two oxide layers, α-Al2O3 and γ-Al2O3. Microhardness measurements and chemical and phase examinations confirmed these results. Potentiodynamic polarization tests and electrochemical impedance spectroscopy revealed the greater corrosion resistance for the coated alloy. Moreover, the corrosion resistance was increased with the current frequency of the PEO process.

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