Yeni Tür Yeşil Korozyon İnhibitörü Olarak Citrus aurantium Meyve Kabukları Ekstraktının HCl Çözeltisindeki Yumuşak Çelik Korozyonu Üzerine Kararlı Etkisi

Öz

Citrus aurantium meyve kabuğu özütü çözeltisinin mevcut araştırmadaki rolü, çevre dostu ve yeşil etkisi ile atmosfer ortamında, yumuşak çelik üzerinde korozyon inhibitörü olarak etkisini araştırmaktır. Citrus aurantium’un inhibitör etkisi, lineer polarizasyon (LPR), potansiyodinamik polarizasyon ve elektrokimyasal impedans spektroskopisi (EIS) yöntemleri kullanılarak çalışılmıştır. Her ölçümden bir saat önce, çalışma elektrotları metal-çözelti arayüzeyini dengelemek amacıyla farklı derişimlerdeki Citrus aurantium meyve kabukları özütünü içeren HCl çözeltilerine daldırılmıştır. Turunç meyvesi kabuklarının özütü bir saatlik elektrokimyasal testler sonucunda potansiyel bir inhibitör etki göstermiş ve Citrus aurantium meyve kabuklarının özüt derişimlerinin artmasıyla, HCl çözeltilerindeki yumuşak çelik elektrotları koruma etkisi de artmıştır. Son olarak, bir saatlik daldırma işlemi sonrasında turunç meyvesi kabuğu ekstraktını içeren ve içermeyen 1,0 M HCl çözeltilerindeki çalışma elektrotlarının yüzey morfolojileri, optik mikroskopla incelenmiş ve inhibitör ekstrakt çözeltisindeki yumuşak çeliğin yüzeyinin inhibitör içermeyen yüzeye kıyasla daha pürüzsüz olduğu sonucuna varılmıştır. Deneysel veriler ve yüzey morfoloji sonuçları birbirleriyle son derece uyumludur.

Anahtar Kelimeler

• Citrus aurantium
• EIS
• Yeşil inhibitör
• Asidik korozyon
• Optik mikroskop

The Consistent Effect of Citrus aurantium Fruit Peels Extract as New Type Green Inhibitor on Mild Steel Corrosion in HCl Solution

Abstract

The role of Citrus aurantium fruit peel extract solution in the existing research is to investigate the effect as corrosion inhibitor on mild steel in the atmospheric environment with its eco-friendly and green effect. It was studied the inhibitor effect of Citrus aurantium utilizing linear polarization (LPR), potentiodynamic polarization, and electrochemical impedance spectroscopy (EIS) methods. The working electrodes were immersed in HCl solutions containing various concentrations of Citrus aurantium fruit peels extract in order to equilibrate the metal-solution interface for one hour before each measurement. The bitter orange fruit peels extract indicated a potent inhibitor influence as a consequence of one hour electrochemical tests, and with the raise of extract concentrations of Citrus aurantium fruit peels, the protection influence of mild steel electrodes in HCl solutions also enhanced. Finally, the surface morphologies of the working electrodes in aggressive HCl solutions without and with bitter orange fruit peels extract after one-hour immersion were analysed by an optical microscopy, it was concluded that the mild steel surface in the Citrus aurantium fruit peels extract solution had a flawless surface compared to the blank one. Experimental data and surface morphology results are highly consistent with each other.

Keywords

• Citrus aurantium
• EIS
• Green inhibitor
• Acidic corrosion
• Optical microscope

Kaynakça

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