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.

scholarly journals Anticorrosive non-crystalline coating prepared by plasma electrolytic oxidation for ship low carbon steel pipes

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Chunsheng Ma ◽  
Jian Liu ◽  
Xinhe Zhu ◽  
Wenbin Xue ◽  
Zhijun Yan ◽  
...  
Keyword(s):  
Carbon Steel ◽  
Plasma Electrolytic Oxidation ◽  
Chemical Elements ◽  
Orthogonal Experiment ◽  
Low Carbon Steel ◽  
Corrosion Current ◽  
Low Carbon ◽  
Electrolytic Oxidation ◽  
Plasma Electrolytic ◽  
Peo Coatings

Abstract A corrosion-resistant non-crystalline coating was fabricated by plasma electrolytic oxidation (PEO) on Q235 low carbon steel for ship pipes. The distribution and composition of chemical elements and phases of PEO coatings were analyzed by an orthogonal experiment, and the formation mechanism of PEO coatings was discussed. The corrosion current densities and corrosion potentials were measured. The results indicated that the formation of a transition layer mainly containing Fe3O4 was crucial for achieving an excellent coating quality. Furthermore, the corrosion current density of coated steel was reduced by 78% compared with the bare steel.

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