Fabrication and Evaluation of Anti-Corrosion Properties of Epoxy/Modified Graphitic Carbon Nitride (g-3N4) Nanocomposite on Mild Steel

Hassanzadeh, Abolfazl | 2023

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 55804 (06)
  4. University: Sharif University of Technology
  5. Department: Chemical and Petroleum Engineering
  6. Advisor(s): Ramazani Saadatabadi, Ahmad
  7. Abstract:
  8. In order to protect the corrosion of steel, a self-healing epoxy nanocomposite containing modified graphite carbon nitride (g-C3N4) and ZIF-67 was made along with benzotriazole (BTA) and cerium inhibitors. To increase the efficiency and also to increase the duration of use of inhibitors, it is better to load these inhibitors on containers such as MOFs. One of the useful MOFs for this purpose is ZIF-67, which has a high specific surface area that allows the transport of inhibitors with high capacity. But these containers fail after some time, so to improve the physical properties of the coating systems, g-C3N4 was also used as a mineral material, which of course was also used as a filler. With the investigations carried out on the samples, it was shown that the local pH changes in the anodic and cathodic sites caused the gradual release of both corrosion inhibitors (BTA and Ce), which resulted in an almost 500% improvement in the overall resistance of the epoxy nanocomposite containing nanopigment g-C3N4/ZIF-67/BTA/Ce compared to blank epoxy. Also, the intuitive results of the salt fog test showed the unique anti-corrosion properties of these nanocomposites after 20 days
  9. Keywords:
  10. Corrosion ; Graphitic Carbon Nitride ; Benzotriazole ; Metal Corrosion Inhibitor ; Cerium ; Coating ; Metal-Organic Framework

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