EFFECT OF MOS2 DOPED CONDUCTING POLYMERS TO CORROSION OF MILD STEEL

Yıl 2019, Cilt: 2 Sayı: 2, 133 - 136, 15.11.2019

Abdurrahman Asan Gülden Asan

Öz

One of the most common ways
of protecting metals from corrosion is to form a film on metal surfaces or to
coat them with suitable materials. Thus, metals are protected from corrosive
components in their environment. However, in the case of openings at the micro
level that may occur in the formation of the coating or in case of scratches
and similar openings that may occur after the coating, water and air will reach
the metal surface and initiate corrosion. In
this study, the effect of polypyrrole (PPy), polyaniline (PANI) and MoS2 doped
PPy and PANI coatings on the corrosion rate of steel was investigated.
Corrosion resistance of these coatings was determined by measuring corrosion
rates by Tafel Polarization method in 0.1 M NaCl medium. Because of the
experiments, it was determined that these homogeneous and adhering coatings
were effective against corrosion. The best protection against corrosion was
found as 96.7%, 89.0%, 69.5% and 45.2% for PPy + MoS2, PPy, PANI + MoS2 and
PANI coatings, respectively. MoS2 additive yielded positive results for both
coatings. Better protection of PPy than PANI can be explained by the fact that
the oxidation potential of pyrrole (0.6 V) is lower than the aniline oxidation
potential.

Anahtar Kelimeler

Corrosion, conducting polymers, MoS2, . Tafel polarization, mild steel

Teşekkür

13th National Chemical Engineering Congress (oral presentation)

Kaynakça

• 1. Cost of corrosion in the USA. Anti-Corros Method M. 2000;47(3):141-.
• 2. Biezma MV, San Cristobal JR. Methodology to study cost of corrosion. Corros Eng Sci Techn. 2005;40(4):344-52.
• 3. Bhaskaran R, Palaniswamy N, Rengaswamy NS, Jayachandran M. A review of differing approaches used to estimate the cost of corrosion (and their relevance in the development of modern corrosion prevention and control strategies). Anti-Corros Method M. 2005;52(1):29-41.
• 4. Abed KM, Pynn CR. Effect of Volatile Corrosion Inhibitors on Cathodic Protection. Mater Performance. 2018;57(12):24-9.
• 5. Al-Amiery AA, Ahmed MHO, Abdullah TA, Gaaz TS, Kadhum AAH. Electrochemical studies of novel corrosion inhibitor for mild steel in 1 M hydrochloric acid. Results Phys. 2018;9:978-81.
• 6. Bandeira MCE, Prochnow FD, Costa I, Franco CV. Corrosion resistance of Nd-Fe-B magnets coated with polypyrrole films. Mater Sci Forum. 2006;530-531:111-+.
• 7. Riviere JP, Delafond J, Misaelides P, Noli F. Corrosion protection of an AISI 321 stainless steel by SIC coatings. Surf Coat Tech. 1998;100(1-3):243-6.
• 8. DeBerry DW. Modification of the electrochemical and corrosion behavior of stainless steels with an electroactive coating. J Electrochem Soc. 1985;132(5):1022-6.
• 9. Fenelon AM, Breslin CB. The electrochemical synthesis of polypyrrole at a copper electrode: corrosion protection properties. Electrochim Acta. 2002;47(28):4467-76.
• 10. Asan A, Kabasakaloglu M. Electrochemical and corrosion behaviors of mild steel coated with polypyrrole. Mater Sci+. 2003;39(5):643-51.
• 11. Attarzadeh N, Raeissi K, Golozar MA. Effect of saccharin addition on the corrosion resistance of polypyrrole coatings. Prog Org Coat. 2008;63(2):167-74.
• 12. Armelin E, Meneguzzi A, Ferreira CA, Aleman C. Polyaniline, polypyrrole and poly(3,4-ethylenedioxythiophene) as additives of organic coatings to prevent corrosion. Surf Coat Tech. 2009;203(24):3763-9.
• 13. Anicai L, Florea A, Buda M, Visan T. Polypyrrole Films Doped with Phosphomolybdate Anions on Al Surfaces - Formation and Corrosion Protection Characterisation. Z Phys Chem. 2013;227(8):1121-41.
• 14. Aravindan N, Sangaranarayanan MV. Influence of solvent composition on the anti-corrosion performance of copper-polypyrrole (Cu-PPy) coated 304 stainless steel. Prog Org Coat. 2016;95:38-45.
• 15. Arabzadeh H, Shahidi M, Foroughi MM. Electrodeposited polypyrrole coatings on mild steel: Modeling the EIS data with a new equivalent circuit and the influence of scan rate and cycle number on the corrosion protection. J Electroanal Chem. 2017;807:162-73.
• 16. Balaskas AC, Kartsonakis IA, Kordas G, Cabral AM, Morais PJ. Influence of the doping agent on the corrosion protection properties of polypyrrole grown on aluminium alloy 2024-T3. Prog Org Coat. 2011;71(2):181-7.