Indian Journal of Advances in Chemical Science, Volume: 9, Issue :1 , January 2021

 
             
   
   

ISSN No.: 2320-0898 (Print); 2320-0928 (Electronic)

DOI: 10.22607/IJACS.2021.901004 

   

Research Article

 

     

Synthesis, Biological Evaluation, and Docking Studies of 1,2,4,5-Tetrasubstituted Imidazole Derivatives as Antibacterial Agents: Use of Niobia Supported Heteropoly Tungstate as an Efficient Reusable Catalyst

   
Karunasree Merugu, Aravind Kurnool, Shravya Pachipulusu

ABSTRACT

 

We exercised iron-manganese phosphate composite coatings to defend the surface of D2 steel from corrosion. Addition of titanium dioxide (additive) in different concentrations to the phosphating solution made significant difference in coating weight, coating time, morphology, porosity, and anti-corrosion performance of phosphate chemical conversion coating on D2 steel was studied. The resultant coatings were characterized by field emission scanning electron microscopy, energy-dispersive X-ray analysis, and X-ray diffraction measurements to ascertain the morphological features, chemical composition, and phase constituents, respectively. The corrosion resistance of coated samples in 3.5% NaCl was evaluated by potentiodynamic polarization and electrochemical impedance spectroscopy. Potential time measurement helped to track the phosphate coating formation and offer an indication about completion of coating process. The results infer that the presence of additive could be formed highly corrosion resistant phosphate composite coatings. It is an approach to determine the optimum concentration of additive which provides better protective layer.

     
     

Key words: Phosphate chemical conversion coating; Titanium dioxide; Corrosion resistance and coating completion time.

 

 

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