DETERMINATION OF INHIBITION EFFECTS OF FRUIT CONCENTRATED GOJI BERRIES (Lycium barbarum L., Solanaceae) TO ELECTROCHEMICAL BEHAVIOUR OF THE COPPER IN CHLORIDE MEDIUM (pH=8.0)

Yıl 2017, Cilt: 12 Sayı: 1, 25 - 37, 05.01.2017

Güray Kılınçeker Sema Çelik Mustafa Kemal Sangün

https://doi.org/10.12739/NWSA.2017.12.1.2A0109

Öz

In this study, the effect of Lycium barbarum L.,in the corrosion behaviour of copper has been investigated in 3.5% NaCl solution (pH=8.0) using potentiodynamic polarization and electrochemical impedance spectroscopy (EIS). Current-potential curve and Nyquist diagrams were obtained in different concentrations of Lycium barbarum. The surface morphology of copper after their exposure to 3.5% NaCl solution with and without of Lycium barbarum was examined by scanning electron microscopy (SEM). The obtained results show that, Lycium barbarum inhibits corrosion of copper in 3.5% NaCl solution. Inhibition activity was determined to increase with the concentration of Lycium barbarum. 

Anahtar Kelimeler

Copper, Electrochemical Techniques, Corrosion, Scanning Electron Microscopy (SEM), Lycium Barbarum L

KLORÜRLÜ ORTAMLARDA (pH=8,0) BAKIRIN ELEKTROKİMYASAL DAVRANIŞLARINA KURT ÜZÜMÜ (Lycium Barbarum L., Solanaceae) MEYVE KONSANTRESİNİN İNHİBİSYON ETKİLERİNİN BELİRLENMESİ

Öz

Bu
çalışmada, bakırın korozyon davranışlarına kurt üzümü (Lycium barbarum L., Solanaceae) meyve konsantresinin inhibisyon
etkisi %3,5 NaCl çözeltisinde
(pH=8,0) potansiyodinamik polarizasyon ve elektrokimyasal impedans
spektroskopisi kullanılarak araştırılmıştır. Kurt üzümü meyve konsantresinin
farklı derişimlerde akım-potansiyel eğrileri ve Nyquist diyagramı elde
edilmiştir. Kurt üzümü meyve konsantresini içeren ve içermeyen %3,5 NaCl çözeltilerinde
bekletildikten sonra bakır elektrotun taramalı elektron mikroskopu (SEM) ile
yüzey görüntüleri kaydedilmiştir. Elde edilen sonuçlardan kurt üzümü meyve
konsantresi %3,5 NaCl çözeltisinde
bakırın korozyonunu engellediği belirlenmiştir. İnhibisyon etkinliğinin, kurt
üzümü meyve konsantresinin derişimi ile değiştiği tespit edilmiştir.

Anahtar Kelimeler

Bakır, Elektrokimyasal Teknikler, Korozyon, Taramalı elektron mikroskopu (SEM), Kurt Üzümü

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