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Investigation of anti-corrosion behavior of waterborne organosilane-polyester coatings for aa6011 aluminum alloy

DSpace at IIT Bombay

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Title Investigation of anti-corrosion behavior of waterborne organosilane-polyester coatings for aa6011 aluminum alloy
 
Creator PATHAK, SS
KHANNA, AS
 
Subject sol-gel
waterborne
aluminum
corrosion
hmmm
polyester
inorganic hybrid coatings
sol-gel
corrosion protection
resistance
silane
films
316l
 
Description Thermal-cured, sol-gel derived, waterborne organosilane-polyester coatings (SiE) have been developed using methyltrimethoxysilane, 3-glycidoxytrimethoxysilane and polyester resin for corrosion protection of aluminum AA6011. The structural and morphological features of the coatings were analyzed by Fourier transform infrared spectroscopy (FT-IR) and atomic force microscopy (AFM). Results show that the coatings on aluminum were smooth, continuous and defect-free. Performance of the SiE coatings were investigated and cornpared with pure organosilane coating and polyester coating using potentiodynamic polarization studies. contact angle measurement and pencil hardness test. Results from polarization studies have shown that the SiE coated substrate (4.6-13.1 x 10(-7) A/cm(2)) provided a better corrosion protection than the polyester coated substrate (7.8 x 10(-6) A/cm(2)) due formation of aluminum-oxygen-silicon covalent bond at aluminum-coating interface. Furthermore, SiE coatings provided better hydrophobicity and hardness than the polyester coating. (C) 2008 Elsevier B.V. All rights reserved.
 
Publisher ELSEVIER SCIENCE SA
 
Date 2011-10-13T20:42:53Z
2011-12-15T09:16:13Z
2011-10-13T20:42:53Z
2011-12-15T09:16:13Z
2009
 
Type Review
 
Identifier PROGRESS IN ORGANIC COATINGS,65(2)288-294
0300-9440
http://dx.doi.org/10.1016/j.porgcoat.2008.12.006
http://dspace.library.iitb.ac.in/xmlui/handle/10054/13845
http://hdl.handle.net/100/3053
 
Language en