Ceramic coatings by sol-gel method for corrosion protection of mild steel

Tiwari, S K and Singh, Raghuvir (2012) Ceramic coatings by sol-gel method for corrosion protection of mild steel. In: National Congress on Corrosion Control, 23 – 25 August 2012, Kolkata.



Mild steel finds extensive applications in automobile, household appliances, heavy construction and business machines due to its mechanical properties and machinability at low cost. However, it is prone to corrosion that leads to industrial accidents and loss of material resources. Sol-gel derived ceramic coatings have been deposited on mild steel (MS) with a prior conversion coating for its corrosion protection. The prior conversion coating led to the formation of well adherent coatings of Al2O 3 , ZrO 2 and TiO 2 . The Scanning Electron Microscope (SEM), X-ray diffractometer (XRD) and FT-IR was used to study the morphology, phases formed and nature of bonding in the coating. The electrochemical corrosion behavior of the coated MS was evaluated in 3.5 wt.% NaCl solution. The coatings show barrier type protection of MS up to about 1 V SCE . The Al 2 O 3 and ZrO 2 coatings were observed unaffected during prolong immersion in 3.5 wt.% NaCl solution. The physicochemical and electrochemical properties have been correlated and discussed.

Item Type:Conference or Workshop Item (Paper)
Official URL/DOI:http://eprints.nmlindia.org/6724
Uncontrolled Keywords:corrosion protection; mild steel; ceramic coatings
Divisions:Corrosion and Surface Engineering
ID Code:6724
Deposited By:Dr. A K Sahu
Deposited On:03 Oct 2013 17:37
Last Modified:03 Oct 2013 17:37
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