Investigation of Inhibition Effect of Morus Nigra Pendula Leaf Extract as Green Inhibitor on The Corrosion of Mild Steel in Acidic Solutions

Öz

The inhibition behavior of Morus Nigra Pendula leave extract (MNPYE) as a green corrosion inhibitor in 0.5 M HCI solution at dissimilar concentrations for mild steel (MS) was investigated using methods such as linear polarization resistance (LPR), electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization techniques. EIS measurements have shown that the rising concentration of MNPYE in the acid solution increments the charge transfer resistance and diminishes the double layer capacitance. Polarization measurements have shown that MNPYE is a mixed-type inhibitor which dıminishes both anodic and cathodic current density values. The adsorption of MNPYE components on the MS surface was characterized by scanning electron microscopy (SEM) data.

Anahtar Kelimeler

• Mild steel,EIS,Corrosion,Adsorption

Asidik Çözeltide Yumuşak Çeliğin Korozyonu Üzerine Yeşil İnhibitör Olarak Morus Nigra Pendula Yaprak Ekstraktının İnhibisyon Etkisinin İncelenmesi

Öz

Morus Nigra Pendula yaprağı ekstresinin (MNPYE) inhibisyon davranışı, 0,5 M HCI çözeltisi içinde farklı konsantrasyonlarda yeşil bir korozyon inhibitörü olarak yumuşak çelik (YÇ) için, doğrusal polarizasyon direnci (LPR), elektrokimyasal impedans spektroskopisi (EIS) ve potansiyodinamik polarizasyon teknikleri kullanılarak araştırılmıştır. EIS ölçümleri, asit çözeltisınde MNPYE’nin artan konsantrasyonuyla yük transfer direncinin arttığını ve çift tabaka kapasitansının azaldığını göstermiştir. Polarizasyon ölçümleri, MNPYE’nin hem anodik hem de katodik akım yoğunluğu değerlerini azaltan karışık tipte bir inhibitör olduğunu göstermiştir. MNPYE bileşenlerinin YÇ yüzeyindeki adsorpsiyonu, Taramalı Elektron Mikroskobu (SEM) verileri ile karakterize edildi.

Anahtar Kelimeler

• Yumuşak çelik,EIS,Korozyon,Adsorpsiyon

Kaynakça

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