scholarly journals Inhibition effect of cerium in hybrid sol-gel films on aluminium alloy AA2024

2010 ◽  
Vol 42 (4) ◽  
pp. 299-305 ◽  
Author(s):  
L. Paussa ◽  
N. C. Rosero-Navarro ◽  
F. Andreatta ◽  
Y. Castro ◽  
A. Duran ◽  
...  
Keyword(s):  
Aluminium Alloy ◽  
Sol Gel ◽  
Inhibition Effect ◽  
Sol Gel Films

Alumina Sol-Gel Films and Alodine Films on Al 2024 Alloy

2011 ◽  
Vol 356-360 ◽  
pp. 364-367
Author(s):  
Qi Zhou ◽  
Xuan Xiao ◽  
Da Li Zhao ◽  
En Jun Song
Keyword(s):  
Corrosion Resistance ◽  
Aluminium Alloy ◽  
Electrochemical Impedance ◽  
Sol Gel ◽  
Film Surface ◽  
Corrosion Current ◽  
Promising Alternative ◽  
Gel Film ◽  
Alumina Sol ◽  
Sol Gel Films

Development of the sol-gel films for painting pretreatment of aluminium alloy is to replace bichromate conversion films such as Alodine. Corrosion resistance of Alodine film and sol-gel film were evaluated through potentiodynamic polarization curves, electrochemical impedance spectroscopy, salt spraying and acidic dropping solution. Sol-gel film is almost the same as Alodine film at the film surface density, salt spraying resistance and adhesion with painting coating. Changing color times of dropping solution on sol-gel film is shorter than Alodine film. But the corrosion current of sol-gel film is lower than Alodine and the impedance value is higher than Alodine in 35g/L NaCl solution. Mechanism of corrosion resistance of alumina sol-gel film is that the cathode reaction and anodic reactions are restrained by sol-gel film in the Cl- corrosive medium. The EIS of sol-gel film consisted of only a single capacitive arc with one time constant. Sol-gel coating can prevent or delay the corrosive solution from infiltrating the substrate for its better isolation function, thus protecting 2024 aluminium alloy from corrosion. Sol-gel films can improve corrosion resistance of aluminum alloy and have the same adhesion as Alodine film. It will be a promising alternative pretreatment for aluminum alloys prior to painting.

Sol-gel synthesis of textured lanthanum titanate thin films

2003 ◽  
Vol 18 (2) ◽  
pp. 357-362 ◽  
Author(s):  
Mary M. Sandstrom ◽  
Paul Fuierer
Keyword(s):  
Thin Films ◽  
Sol Gel ◽  
Precursor Solution ◽  
Solution Concentration ◽  
Optical Measurements ◽  
Layered Perovskite ◽  
Orientation Factor ◽  
Anisotropic Structures ◽  
Sol Gel Films ◽  
Sol Gel Synthesis

Control over crystallographic orientation in thin films is important, particularly with highly anisotropic structures. Because of its ferroelectric nature, the layered perovskite La2Ti2O7 has interesting piezoelectric and electrooptic properties that may be exploited when films are highly textured. Sol-gel films with an orientation factor of greater than 95% were fabricated without relying on epitaxial (lattice-matching) growth from the substrate. Film orientation and crystallization were confirmed by x-ray diffraction, scanning electron microscopy, atomic force microscopy, and optical measurements. The particle sizes in all precursor solutions were measured by dynamic light scattering experiments. Experimental results indicate that film orientation is a function of precursor solution concentration, size of the molecular clusters in the solution, and film thickness.

Influence of radical photoinitiator content on UV curing process and UV-cured hybrid sol–gel films

2019 ◽  
Vol 17 (2) ◽  
pp. 333-343 ◽  
Author(s):  
Anaïs Even ◽  
Guillaume Vignaud ◽  
Nadia Guitter ◽  
Nathalie Le Bozec ◽  
Philippe Tingaut ◽  
...  
Keyword(s):  
Sol Gel ◽  
Uv Curing ◽  
Curing Process ◽  
Sol Gel Films ◽  
Uv Curing Process

AFM based polarization nanolithography on PZT sol–gel films

2006 ◽  
Vol 83 (4-9) ◽  
pp. 1456-1459 ◽  
Author(s):  
Valentinas Snitka ◽  
Arturas Ulcinas ◽  
Kestutis Nemciauskas ◽  
Vitas Lendraitis
Keyword(s):  
Sol Gel ◽  
Sol Gel Films

Mechanical properties of UV-photopolymerizable hybrid sol–gel films investigated by AFM in Pulsed Force Mode

2005 ◽  
Vol 33 (2-4) ◽  
pp. 233-242 ◽  
Author(s):  
O. Soppera ◽  
M. Feuillade ◽  
C. Croutxé-Barghorn ◽  
C. Carré
Keyword(s):  
Mechanical Properties ◽  
Sol Gel ◽  
Force Mode ◽  
Sol Gel Films

Photocatalytic degradation of trichloroethylene in the gas phase over TiO2 sol-gel films: Analysis of products

Chemosphere ◽  
1998 ◽  
Vol 36 (3) ◽  
pp. 483-495 ◽  
Author(s):  
Jong-Soon Kim ◽  
Kiminori Itoh ◽  
Masayuki Murabayashi
Keyword(s):  
Photocatalytic Degradation ◽  
Gas Phase ◽  
Sol Gel ◽  
Tio2 Sol ◽  
Sol Gel Films

Existence of Conformers Revealed by Spectral Analysis of Single Molecules of Perylene Orange in Thin Sol−Gel Films

2006 ◽  
Vol 110 (9) ◽  
pp. 3902-3909 ◽  
Author(s):  
Carine Julien ◽  
Anne Débarre ◽  
Daniele Nutarelli ◽  
Alain Richard ◽  
Paul Tchénio
Keyword(s):  
Spectral Analysis ◽  
Sol Gel ◽  
Single Molecules ◽  
Sol Gel Films

Study on fabrication of the superhydrophobic sol–gel films based on copper wafer and its anti-corrosive properties

2012 ◽  
Vol 258 (17) ◽  
pp. 6531-6536 ◽  
Author(s):  
Youhua Fan ◽  
Changzhu Li ◽  
Zejun Chen ◽  
Hong Chen
Keyword(s):  
Sol Gel ◽  
Sol Gel Films
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