Corrosion and wear behavior of alumina-polyester nanocomposite coatings

The corrosion and wear behavior of powder coatings fabricated by the electrostatic method was investigated in this study. Pure polyester coating and fabricated nanocomposite powder coating with 10 and 20 mass.% alumina nanoparticles were coated with electrostatic spraying method on the surfaces of carbon steel substrate. Coatings were cured in two regimes by oven and microwave for the appropriate time. The effects of alumina nanoparticles on the corrosion resistance of coated samples were studied by immersion and electrochemical impedance spectroscopy (EIS) tests. Also, pin-on-disk test was applied to evaluate the wear properties and coefficient of friction (COF) of the coatings. The results of the corrosion test reveal that the samples with 10 mass.% alumina show the best corrosion resistance and cause a reduction in corrosion rates which is about 36 times to that of the pure sample. The wear rate of nanocomposite coatings is 10 times lower than that of pure ones and also the coefficient of friction of nanocomposite samples is almost half of the pure samples. Furthermore, the nanocomposite coatings cured in the microwave show better protection properties and wear resistance than that of ones cured in an oven. POLYM. ENG. SCI., 2016. © 2016 Society of Plastics Engineers

[1]  Kai-Ts'ung Yang,et al.  Effects of inorganic sealant and brief heat treatments on corrosion behavior of plasma sprayed Cr2O3–Al2O3 composite ceramic coatings , 2015 .

[2]  B. Ramezanzadeh,et al.  Electrochemical investigation of the properties of Co doped ZnO nanoparticle as a corrosion inhibitive pigment for modifying corrosion resistance of the epoxy coating , 2014 .

[3]  F. N. Ani,et al.  Microwave-assisted synthesis of metal oxide/hydroxide composite electrodes for high power supercapacitors – A review , 2014 .

[4]  M. Esfandeh,et al.  Corrosion protection of steel by epoxy nanocomposite coatings containing various combinations of clay and nanoparticulate zirconia , 2013 .

[5]  G. Vaganov,et al.  Characterization and corrosion protection properties of epoxy powder coatings containing nanoclays , 2013 .

[6]  M. Panjepour,et al.  Tribological and mechanical properties of amorphous and semi-crystalline PEEK/SiO2 nanocomposite coatings deposited on the plain carbon steel by electrostatic powder spray technique , 2012 .

[7]  B. Ramezanzadeh,et al.  An evaluation of the corrosion resistance and adhesion properties of an epoxy-nanocomposite on a hot-dip galvanized steel (HDG) treated by different kinds of conversion coatings , 2011 .

[8]  M. Panjepour,et al.  Ball milling preparation and characterization of poly (ether ether ketone)/surface modified silica nanocomposite , 2011 .

[9]  M. Jafari,et al.  Effect of polypyrrole–montmorillonite nanocomposites powder addition on corrosion performance of epoxy coatings on Al 5000 , 2009 .

[10]  Xianming Shi,et al.  Effect of nanoparticles on the anticorrosion and mechanical properties of epoxy coating , 2009 .

[11]  R. Naderi,et al.  Effect of curing characterization on the corrosion performance of polyester and polyester/epoxy powder coatings , 2008 .

[12]  M. Bagherzadeh,et al.  Preparation of epoxy–clay nanocomposite and investigation on its anti-corrosive behavior in epoxy coating , 2007 .

[13]  V. Mišković‐Stanković,et al.  Anilinium 5-sulfosalicylate electropolymerization on mild steel from an aqueous solution of sodium 5-sulfosalicylate/disodium 5-sulfosalicylate , 2006 .

[14]  R. Naderi,et al.  EIS examination of mill scale on mild steel with polyester–epoxy powder coating , 2004 .

[15]  Klaus Friedrich,et al.  Creep resistant polymeric nanocomposites , 2004 .

[16]  G. Thompson,et al.  Corrosion performance of powder coated aluminium using EIS , 2003 .

[17]  S. Touzain,et al.  Characterization of zinc-rich powder coatings by EIS and Raman spectroscopy , 2002 .

[18]  B. Makin,et al.  Measurements of thickness and adhesive properties of electrostatic powder coatings for standard and modified powder coating guns , 2001 .

[19]  J. Scully,et al.  Lifetime Prediction for Organic Coatings on Steel and a Magnesium Alloy Using Electrochemical Impedance Methods , 1994 .

[20]  J. Watts.  The application of surface analysis to studies of the environmental degradation of polymer‐to‐metal adhesion , 1988 .

[21]  G. D. Davis,et al.  Use of hydration inhibitors to improve bond durability of aluminium adhesive joints , 1985 .

[22]  R. Holm,et al.  Surface and interface analysis in polymer technology: A review , 1980 .

[23]  G. Wood,et al.  The Interpretation of Impedance Changes on Oxide‐Coated Aluminum Produced by Immersion in Inhibitive and Corrosive Aqueous Media , 1973 .

[24]  J. Mayne,et al.  Ionic conduction in polymer films: IV. The effect of pigmentation with iron oxide , 1971 .

[25]  A. Mostafaei,et al.  Epoxy/polyaniline–ZnO nanorods hybrid nanocomposite coatings: Synthesis, characterization and corrosion protection performance of conducting paints , 2014 .

[26]  G. Wood,et al.  A study of the pitting corrosion of Al byscanning electron microscopy , 1970 .