Microstructure, deposition mechanism and corrosion behavior of nanostructured cerium oxide conversion coating modified with chitosan on AA2024 aluminum alloy

2017 ◽  
Vol 725 ◽  
pp. 968-975 ◽  
Author(s):  
Hossein Hassannejad ◽  
Mohsen Moghaddasi ◽  
Ehsan Saebnoori ◽  
Amin Rabiei Baboukani
Keyword(s):  
Aluminum Alloy ◽  
Cerium Oxide ◽  
Corrosion Behavior ◽  
Conversion Coating ◽  
Deposition Mechanism ◽  
Oxide Conversion

The formation and corrosion behavior of a zirconium-based conversion coating on the aluminum alloy AA6061

2016 ◽  
Vol 13 (5) ◽  
pp. 837-850 ◽  
Author(s):  
Dongdong Peng ◽  
Junsheng Wu ◽  
Xiaoli Yan ◽  
Xiaoqiong Du ◽  
Yueying Yan ◽  
...  
Keyword(s):  
Aluminum Alloy ◽  
Corrosion Behavior ◽  
Conversion Coating

ELECTROCHEMICAL PHOSPHATE CONVERSION COATINGS: A REVIEW

2017 ◽  
Vol 24 (03) ◽  
pp. 1730003 ◽  
Author(s):  
GHASEM BARATI DARBAND ◽  
M. ALIOFKHAZRAEI
Keyword(s):  
Corrosion Behavior ◽  
Energy Cost ◽  
Conversion Coating ◽  
Low Energy ◽  
Electrochemical Methods ◽  
Phosphate Coating ◽  
Conversion Coatings ◽  
Chemical Methods ◽  
Deposition Mechanism ◽  
Coating Deposition

Deposition of phosphate conversion coating using electrochemical methods have many advantages such as low phosphating temperature, low energy cost and good properties of fabricated coating and in recent times increasingly employed for deposition of phosphate coating. Deposition mechanism of coating which is fabricated using electrochemical methods is different from those obtained by conventional chemical methods, consequently, the properties of electrophosphate coating is also different from those conventional phosphate coating. In this paper, recent understanding of deposition mechanism of electrophosphate coating is reviewed. The microstructure, composition, thickness and corrosion behavior of electrophosphate coatings and effect of different factors of those properties were also reviewed.

Corrosion Behavior and Microstructure of Pd Ions Doped Cerium Conversion Coating on AA2219-T87 Aluminum Alloy

2015 ◽  
Vol 1090 ◽  
pp. 79-83
Author(s):  
Yan Hong He ◽  
Zhen Duo Cui ◽  
Xian Jin Yang ◽  
Sheng Li Zhu ◽  
Zhao Yang Li ◽  
...  
Keyword(s):  
Corrosion Resistance ◽  
Aluminum Alloy ◽  
Corrosion Behavior ◽  
Photoelectron Spectroscopy ◽  
Composite Coatings ◽  
Corrosion Current ◽  
Conversion Coating ◽  
X Ray Diffraction ◽  
X Ray ◽  
Excellent Corrosion Resistance

In this paper, Pd ions doped cerium conversion coating (CeCC/Pd) was deposited on AA2219-T87 aluminum alloy by electroplating. The microstructure and composition of the coating were characterized by scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDX), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS). Corrosion behavior of AA2219-T87 aluminum alloy with the coating was investigated in 3.5wt.% NaCl solution at the room temperature. XRD and XPS results indicate the existence of cerium-oxide and palladium-oxide in the CeCC/Pd. Polarization curves show that the CeCC/Pd exhibits excellent corrosion resistance. The corrosion current density of the CeCC/Pd decreases by two orders of magnitude compared with the CeCC. The improvement of corrosion resistance would be attributed to the small grain size, good compactness and adhesive strength of the composite coatings.

Electrochemical Study of Corrosion Behavior of Rare Earth Based Chemical Conversion Coating on Aerospace Aluminum Alloy

2019 ◽  
Vol 19 (29) ◽  
pp. 115-123 ◽  
Author(s):  
Sayuri Kiyota ◽  
Benjamín Valdez ◽  
Margarita Stoytcheva ◽  
Roumen Zlatev ◽  
Michael Schorr
Keyword(s):  
Aluminum Alloy ◽  
Rare Earth ◽  
Corrosion Behavior ◽  
Chemical Conversion ◽  
Conversion Coating ◽  
Electrochemical Study ◽  
Chemical Conversion Coating

Deposition and characterization of cerium oxide conversion coatings on aluminum alloy 7075-T6

2004 ◽  
Vol 176 (3) ◽  
pp. 349-356 ◽  
Author(s):  
Berny F. Rivera ◽  
Benedict Y. Johnson ◽  
Matthew J. O'Keefe ◽  
William G. Fahrenholtz
Keyword(s):  
Aluminum Alloy ◽  
Cerium Oxide ◽  
Conversion Coatings ◽  
Aluminum Alloy 7075 ◽  
Oxide Conversion

Corrosion behavior of rare earth cerium based conversion coating on aluminum alloy

2010 ◽  
Vol 28 ◽  
pp. 371-374 ◽  
Author(s):  
Dan ZHAO ◽  
Jie SUN ◽  
Lili ZHANG ◽  
Yong TAN ◽  
Ji LI
Keyword(s):  
Aluminum Alloy ◽  
Rare Earth ◽  
Corrosion Behavior ◽  
Conversion Coating
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