Oxime-Modified Aluminum(III) Isopropoxide: A Promising Sol–Gel Precursor for Corrosion Resistive Nano-Alumina Coating on an Aluminum Alloy

  • Dalip Singh
  • Ajay Saini
  • Veena DhayalEmail author
  • Dinesh Chandra Agarwal


Dense alumina coatings were fabricated over aluminum alloy via dip coating method using oxime-modified aluminum(III) isopropoxide as a sol–gel precursor. The influence of important dip coating parameter; withdrawal rates on quality, thickness, uniformity and corrosion resistivity of coatings were investigated. Structural characterization of coated substrates were done by X-ray diffraction patterns (XRD), scanning electron microscopy (SEM) and atomic force microscopy studies (AFM). Corrosion tests by electrochemical studies indicated that corrosion resistive alumina coatings can be achieved by using withdrawal rate of 25 mm min–1 and 04 cycles of coatings in 3.5% aqueous NaCl solution.


alumina aluminum alloy dip coating corrosion salt spray test 



Authors are greatful to Material research center, MNIT, Jaipur for AFM analysis, University of Rajasthan for SEM and IIT Roorkee for XRD analysis.


Authors are grateful to ONRG, Singapore for financial support (grant no. N62909-14-1-N042) under NICOP programme.


The authors declare that they have no conflict of interest.


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Copyright information

© Pleiades Publishing, Ltd. 2019

Authors and Affiliations

  • Dalip Singh
    • 1
  • Ajay Saini
    • 2
  • Veena Dhayal
    • 2
    Email author
  • Dinesh Chandra Agarwal
    • 3
  1. 1.School of Automobile Mechanical and Mechatronics, Manipal University JaipurJaipurIndia
  2. 2.Department of Chemistry, Manipal University JaipurJaipurIndia
  3. 3.National Institute for Research and Development in Defence Shipbuilding (NIRDESH)New DelhiIndia

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