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Öz

Melia Azedarach (TAE) extract was investigated as eco-friendly corrosion inhibitors of mild steel in 1.0 M HCl using potentiodynamic polarization, linear polarization resistance, electrochemical impedance spectroscopy (EIS), scanning electron microscopy and atomic force microscopy techniques. The experimental results show that TAE is good corrosion inhibitor and the inhibition efficiency is increased with TAE extract concentrations. The results of AC impedance have shown that polarization resistance increased and constant phase element decreased with increasing TAE concentrations. Polarization curves indicated that TAE is mixed inhibitor. Scanning electron and atomic force microscopy studies confirmed the formation of a protective film on the mild steel surface. The inhibitor adsorbed on the iron surface was found to be in a good agreement with the Langmuir adsorption isotherm and the value of adsorption free energy of (G°ads) was also calculated

Anahtar Kelimeler

• Acid corrosion inhibitor; electrochemical impedance spectroscopy; scanning electron microscopy; atomic force microscopy

Asidik Ortamda Yumuşak Çeliğin Korozyonu Üzerine Melia Azedarach Özütünün İnhibitör Davranışı

Öz

1,0 M HCl çözeltisi içerisinde yumuşak çeliğin korozyon davranışı üzerine etkisi çevreyle dost Melia Azedarach (TAE) özütü, potansiyodinamik polarizasyon, lineer polarizasyon direnci, elektrokimyasal impedans spektroskopisi (EIS), taramalı elektron ve atomik güç mikroskobisi yöntemleri kullanılarak araştırılmıştır. Deneysel sonuçlar, TAE özütünün iyi bir korozyon inhibitörü olduğunu ve inhibisyon etkinliğinin TAE derişiminin artmasıyla arttığınını göstermektedir. EIS sonuçlarına göre, TAE derişiminin artmasıyla polarizasyon direnci değerleri artmakta sabit faz elementi değeri azalmaktadır.  Polarizasyon eğrileri, TAE’nın karma tip inhibitör olduğunu göstermektedir. Taramalı elektron ve atomik güç mikroskopi çalışmaları yumuşak çelik yüzeyinde koruyucu filmin oluştuğunu doğrulamaktadır. Metal yüzeyine adsorplanan inhibitör Langmuir adsopsiyon izotermine uymuş ve adsorpsiyon standart serbest entalpi (DG°_ads) değerleri de hesaplanmıştır. 

Anahtar kelimeler: Asit korozyon inhibitörü; elektrokimyasal impedans spektroskopisi; tesbih ağcı özütü; taramalı elektron mikroskobu; atomik kuvvet mikroskobu

Anahtar Kelimeler

• Asit korozyon inhibitörü; elektrokimyasal impedans spektroskopisi; tesbih ağcı özütü; taramalı elektron mikroskobu; atomik kuvvet mikroskobu

Kaynakça

1. [ ] Erbil,M.,Korozyon İlkeler Önlemler, Korozyon Derneği, Ankara, 2012.
2. [ ] Çalışkan E., Gürten A.A., Keleş H., Bayol E., Karbon Çeliğinin Hidroklorik Asit Çözeltisindeki Korozyonuna Allantoin İçeren Schiff Bazının İnhibitör Etkisi, BAÜ Fen Bil. Enstitüsü Dergisi, 14 (2012) 1-13.
3. [ ] Moretti, G., Guidi, F., Grion, G., Tryptamine as a green iron corrosion inhibitor in 0.5 M deaerated sulphuric acid, Corrosion Science, 46 (2004) 387-403.
4. [ ] Ferreira, E.S., Giacomelli, C., Giacomellia, F.C., Spinelli, Evaluation of the inhibitor Effect of L-ascorbic acid on the corrosion of mild steel, Materials Chemistry and Physics, 83 (2004) 129–134.
5. [ ] Goncalves, R.S., Mello, L.D., Electrochemical investigation of ascorbic acid adsorption on low-carbon steel in 0.50 M Na2SO4 solutions, Corrosion Science, 43 (2001) 457-470.
6. [ ] Giacomelli, F.C., Giacomelli, C., Amadori, M.F., Schmidt, V., Spinelli, A., Inhibitor effect of succinic acid on the corrosion resistance of mild steel: electrochemical, gravimetric and optical microscopic studies, , Materials Chemistry and Physics, 83, (2004) 124–128.
7. [ ] Amin, M.A., El-Rehim, S.S.A., El-Sherbini, E.E.F., Bayoumy, R.S., The inhibition of low carbon steel corrosion in hydrochloric acid solutions by succinic acid: Part I. Weight loss, polarization, EIS, PZC, EDX and SEM studies, Electrochimica Acta, 52 (2007) 3588–3600.
8. [ ] Fallavena, T., Antonow, M., Gonçalves, R.S., Caffeine as non-toxic corrosion inhibitor for copper in aqueous solutions of potassium nitrate, Applied Surface Science, 253 (2006) 566-571.

9. [ ] Bouyanzer, A., Hammouti, B., Majidi, L., Pennyroyal oil from Mentha pulegium as corrosion inhibitor for steel in 1 M HCl,Materials Letters, 60 (2006) 2840–2843.
10. [ ] Rahim, A.A., Rocca, E., Steinmetz, J., Kassim, M.J., Inhibitive action of mangrove tannins and phosphoric acid on pre-rusted steel via electrochemical methods,Corrosion Science, 50 (2008) 1546–1550.
11. [ ] Chauhan, L.R., Gunasekaran, G., Corrosion inhibition of mild steel by plant extract in dilute HCl medium, Corrosion Science, 49, (2007) 1143–1161.
12. [ ] El-Etre, A.Y., Inhibition of C-steel corrosion in acidic solution using the aqueous extract of zallouh root, Materials Chemistry and Physics 108 (2008) 278–282.
13. [ ] Bentiss,F., Traisnel,M., Vezin, H., Hildebrand,H.F. Lagrenée,M., 2,5-Bis(4-dimethylaminophenyl)-1,3,4-oxadiazole and 2,5-bis(4-dimethylaminophenyl)-1,3,4-thiadiazole as corrosion inhibitors for mild steel in acidic media, Corrosion Science, 46 (2004) 2781-2792.
14. [ ] Yurt, A., Duran, B., Dal, H., An experimental and theroretical investigaton on adsorption properties of some diphenolic Schiff bases as corrosion inhibitors at acidic solution/ mild steel interface, Arabian Journal of Chemistry 7 (2014) 732-740.
15. [ ] Quartarone, G., Bonaldo, L., Tortato, C., Inhibitive action of indole-5-carboxylic acid towards corrosion of mild steel in deaerated 0.5 M sulfuric acid solutions, Applied Surface Science, 252 (2006) 825-8257.
16. [ ] Chauhan, L.R., Gunasekaran, G., Corrosion inhibition of mild steel by plant extract in dilute HCl medium, Corrosion Science, 49 (2007) 1143–1161.
17. [ ] Hamani, H., Douadi, T., Al-Noaimi, M., Issaadi, S, Daoud, D., Chafaa, S., Electrochemical and quantum chemical studies of some azomethine compounds as corrosion inhibitors for mild steel in 1 M hydrochloric acid, Corrosion Science 88 (2014) 234–245.
18. [ ] Issaadi, S., Douadi, T., Zouaoui, A., Chafaa, S., Khan, M.A., Bouet, G., Novel thiophene symmetrical Schiff base compounds as corrosion inhibitor for mild steel in acidic media, Corrosion Science, 53 (2011) 1484–1488.
19. [ ] Herrag, L., Hammouti, B., Elkadiri, S., Aouniti, A., Jama, C., Vezin, H., Bentiss, F., Adsorption properties and inhibition of mild steel corrosion in hydrochloric solution by some newly synthesized diamine derivatives: Experimental and theoretical investigations, Corrosion Science, 52 (2010) 3042–3051.
20. [ ] Solmaz, R., Altunbas, E., Kardas, G., Adsorption and corrosion inhibition effect of 2-((5-mercapto-1,3,4-thiadiazol-2-ylimino)methyl)phenol Schiff base on mild steel, Materials Chemistry and Physics, 125 (2011) 796–801.
21. [ ] Doner, A., Solmaz, R., Ozcan, M., Kardas, G., Experimental and theoretical studies of thiazoles as corrosion inhibitors for mild steel in sulphuric acid solution,Corrosion Science, 53 (2011) 2902–2913.
22. [ ] El Bribri, A., Tabyaoui, M., Tabyaoui, B., El Attari, H., Bentiss, F., The use of Euphorbia falcate extract as eco-friendly corrosion inhibitor of carbon steel in hydrochloric acid solution,Materials Chemistry and Physics, 141 (2013) 240–247.
23. [ ] Mahdavian, M., Ashhari, S., Corrosion inhibition performance of 2 mercaptobenzimidazole and 2-mercaptobenzoxazole compounds for protection of mild steel in hydrochloric acid solution,Electrochimica Acta 55 (2010) 1720–1724.
24. [ ] Behpour, M., Ghoreishi, S.M., Mohammadi, N., Soltani, N., Salavati-Niasari, M., Investigation of some Schiff base compounds containing disulfide bond as HCl corrosion inhibitors for mild steel, Corrosion Science 52 (2010) 4046–4057.
25. [ ] Behpour, M., Ghoreishi, S.M., Soltani, N., Salavati-Niasari, M., Hamadanian, M., Gandomi, A., Electrochemical and theoretical investigation on the corrosion inhibition of mild steel by thiosalicylaldehyde derivatives in hydrochloric acid solution, Corrosion Science 50 (2008) 2172–2181.
26. [ ] Yan, Y., Li, W., Cai, L., Hou, B., Electrochemical and quantum chemical study of purines as corrosion inhibitors for mild steel in 1 M HCl solution, Electrochimica Acta 53 (2008) 5953–5960.
27. [ ] Yüce, A.O., Kardaş, G., Adsorption and inhibition effect of 2-thiohydantoin on mild steel corrosion in 0.1 M HCl, Corrosion Science, 58 (2012) 86–94.
28. [ ] Tan, Y.J., Bailey, S., Kinsellal, B., An investigation of the formation and destruction of corrosion inhibitor films using electrochemical impedance spectroscopy (EIS), Corrosion Science, 38 (1996) 1545–1561.
29. [ ] Manivel, A., Ramkumar, S., Wua, J.J., Asiri, A.M., Anandan, S., Exploration of (S)-4,5,6,7-tetrahydrobenzo[d]thiazole-2,6-diamine as feasible corrosion inhibitor for mild steel in acidic media, Journal of Environmental Chemical Engineering 2 (2014) 463–470.
30. [ ] Behpour, M., Ghoreishi, S.M., Soltani, N., Salavati-Niasari, M., The inhibitive effect of some bis-N,S-bidentate Schiff bases on corrosion behaviour of 304 stainless steel in hydrochloric acid solution, Corrosion Science, 51 (2009) 1073–1082.
31. [ ] Kumar, Y.D., Maiti, B., Quraishi, M.A., Electrochemical and quantum chemical studies of 3,4-dihydropyrimidin-2(1H)-ones as corrosion inhibitors for mild steel in hydrochloric acid solution, Corrosion Science, 52 (2010) 3586–3598.
32. [ ] Branzoi, A., Branzoi, F., Baibarac, M., The Inhibition of the Corrosion of Armco Iron in HCl Solutions in the Presence of Surfactants of the Type of N-Alkyl Quaternary Ammonium Salts, Materials Chemistry and Physics, 65 (2000) 288-97.
33. [ ] Avcı, G., Keleş Y., Aqueous extract of Acacia cyanophylla leaves as environmentally friendly inhibitor for mild steel corrosion in 1M H2SO4 solution,Surface and Interface Analysis, 43 (2011) 1311–1317.
34. [ ] Hilal, N., Bowen,W.R, Alkhatib,L. and Ogunbiyi,O., A Review of atomic force microscopy applied to cell interactions with membranes, Chemical Engineering Research and Design, 84 (2006) 282–292.
35. [ ] Döner, A., Solmaz, R., Kardaş, G., Experimental and theoretical studies of thiazoles as corrosion inhibitors for mild steel in sulphuric acid solution, Corrosion Science 53 (2011) 2902–2913.
36. [ ] Mu, G., Li, X., Inhibition of cold rolled steel corrosion by Tween-20 in sulfuric acid:Weight loss, electrochemical and AFM approaches, Journal of Colloid and Interface Science 289 (2005) 184–192.
37. [ ] Shukla, S.K., Quraishi, M.A., Cefalexin drug: A new and efficient corrosion inhibitor for mild steel in hydrochloric acid solution, Materials Chemistry and Physics 120 (2010) 142–147.