Electrochemical corrosion behavior of composite coatings of sealed MAO film on magnesium alloy AZ91D

2006 ◽  
Vol 51 (14) ◽  
pp. 2898-2908 ◽  
Author(s):  
Hongping Duan ◽  
Keqin Du ◽  
Chuanwei Yan ◽  
Fuhui Wang
Keyword(s):  
Magnesium Alloy ◽  
Corrosion Behavior ◽  
Composite Coatings ◽  
Electrochemical Corrosion ◽  
Alloy Az91d ◽  
Electrochemical Corrosion Behavior

Effect of High-Intensity Pulsed Ion Beam Irradiation on the Electrochemical Corrosion Behavior of AZ31 Magnesium Alloy

2011 ◽  
Vol 189-193 ◽  
pp. 571-574
Author(s):  
Peng Li
Keyword(s):  
Corrosion Resistance ◽  
Magnesium Alloy ◽  
Corrosion Behavior ◽  
Current Density ◽  
Ion Beam ◽  
Electrochemical Corrosion ◽  
Corrosion Current ◽  
Open Circuit ◽  
Electrochemical Corrosion Behavior ◽  
Shot Number

HIPIB irradiation experiment is carried out at a specific ion current density of 1.1 J/cm2 with shot number from one to ten in order to explore the effect of shot number on electrochemical corrosion behavior of magnesium alloy. Surface morphologies, microstructure and corrosion resistance of the irradiated samples are examined by scanning electron microscopy (SEM), transmission electron microscope (TEM) and potentiodynamic polarization technique, respectively. It is found that HIPIB irradiation leads to the increase in open circuit potential, corrosion potential and breakdown potential, and the decrease in the corrosion current density and the corrosion rate as compared to the original sample. The improved corrosion resistance is mainly attributed to the grain refinement and surface purification induced by HIPIB irradiation.

scholarly journals Electrochemical Corrosion Behavior of Fe3Al/TiC and Fe3Al-Cr/TiC Coatings Prepared by HVOF in NaCl Solution

Metals ◽  
2019 ◽  
Vol 9 (4) ◽  
pp. 437 ◽  
Author(s):  
Najmeh Ahledel ◽  
Robert Schulz ◽  
Mario Gariepy ◽  
Hendra Hermawan ◽  
Houshang Alamdari
Keyword(s):  
Wear Resistance ◽  
Corrosion Behavior ◽  
Composite Coatings ◽  
Electrochemical Techniques ◽  
Electrochemical Corrosion ◽  
Protective Layer ◽  
Nacl Solution ◽  
Hvof Spraying ◽  
Aluminide Coatings ◽  
Electrochemical Corrosion Behavior

Adding TiC particles into iron aluminide coatings has been found to improve its wear resistance, but its corrosion behavior is less known. In this study, the corrosion behavior of Fe3Al/TiC and Fe3Al-Cr/TiC composite coatings, prepared by high velocity oxy fuel (HVOF) spraying, was studied in 3.5 wt. % NaCl solution by means of electrochemical techniques and surface analysis. Results revealed that adding TiC particles into Fe3Al matrix to improve the wear resistance does not deteriorate the corrosion behavior of Fe3Al coating. It was also showed that addition of chromium to Fe3Al/TiC composite provides a more protective layer.

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