Deposition and corrosion behavior of silicate conversion coatings on aluminum alloy 2024

2014 ◽  
Vol 45 (7) ◽  
pp. 574-581 ◽  
Author(s):  
M. Kazemi ◽  
I. Danaee ◽  
D. Zaarei
Keyword(s):  
Aluminum Alloy ◽  
Corrosion Behavior ◽  
Conversion Coatings ◽  
Aluminum Alloy 2024

scholarly journals Effects of chromate and chromate conversion coatings on corrosion of aluminum alloy 2024-T3

2001 ◽  
Vol 140 (1) ◽  
pp. 51-57 ◽  
Author(s):  
J. Zhao ◽  
L. Xia ◽  
A. Sehgal ◽  
D. Lu ◽  
R.L. McCreery ◽  
...  
Keyword(s):  
Aluminum Alloy ◽  
Conversion Coatings ◽  
Chromate Conversion Coatings ◽  
Aluminum Alloy 2024

Corrosion behavior of rare earth metal (REM) conversion coatings on aluminum alloy LY12

2000 ◽  
Vol 284 (1-2) ◽  
pp. 56-63 ◽  
Author(s):  
Yu Xingwen ◽  
Cao Chunan ◽  
Yao Zhiming ◽  
Zhou Derui ◽  
Yin Zhongda
Keyword(s):  
Aluminum Alloy ◽  
Rare Earth ◽  
Corrosion Behavior ◽  
Rare Earth Metal ◽  
Earth Metal ◽  
Conversion Coatings

Role of Post-Treatment in Improved Corrosion Behavior of Trivalent Chromium Protection (TCP) Coating Deposited on Aluminum Alloy 2024-T3

2017 ◽  
Vol 164 (6) ◽  
pp. C276-C284 ◽  
Author(s):  
Marion Ely ◽  
Jolanta Światowska ◽  
Antoine Seyeux ◽  
Sandrine Zanna ◽  
Philippe Marcus
Keyword(s):  
Aluminum Alloy ◽  
Corrosion Behavior ◽  
Trivalent Chromium ◽  
Post Treatment ◽  
Aluminum Alloy 2024

Cerium Chemical Conversion Coating for Aluminum Alloy 2024-T3 and Its Corrosion Resistance

CORROSION ◽  
2004 ◽  
Vol 60 (3) ◽  
pp. 237-243 ◽  
Author(s):  
C. Wang ◽  
F. Jiang ◽  
F. Wang
Keyword(s):  
Corrosion Resistance ◽  
Aluminum Alloy ◽  
Photoelectron Spectroscopy ◽  
Chemical Conversion ◽  
Spherical Particles ◽  
Conversion Coatings ◽  
Nacl Solution ◽  
X Ray ◽  
Golden Yellow ◽  
Aluminum Alloy 2024

Abstract New golden, yellow-colored cerium chemical conversion coatings on aluminum alloy 2024-T3 (AA2024-T3 [UNS A92024]) surface at room temperature were obtained by immersing the alloy into a cerium solution containing zinc chloride (ZnCl2) and hydrogen peroxide (H2O2). Electrochemical methods and immersion tests were used to study the dynamics of the coatings formation and their corrosion resistance in 3.5% sodium chloride (NaCl) solution. The morphologies of the coatings were recorded by scanning electronic microscopy (SEM). Energy-dispersive x-ray (EDX) analysis and x-ray photoelectron spectroscopy (XPS) were used to analyze the chemical composition and the oxidation state of the elements in the coatings. Polarization experiments and immersion tests in 3.5% NaCl solution showed that the sensitivity to pitting corrosion for the conversion-coated AA2024-T3 was greatly lower than that of the untreated specimens, and the corrosion resistance improved markedly. SEM photographs showed that the coatings consisted of a lot of spherical particles. EDX and XPS experimental results showed that the coatings were made up of oxygen, cerium, and aluminum, and the spherical particles contained higher contents of cerium and oxygen than the other sites. Cerium was mainly in the form of Ce4+. The mechanisms of conversion coatings formation and improvement on corrosion resistance also are discussed.

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