BOR KATYONU İÇEREN İYONİK SIVILARIN 0.1 M HCl ORTAMINDA KOROZYON İNHİBİTÖRÜ OLARAK KULLANILMASI

Abstract

Korozyon inhibitörü olarak 1-etil-3-metilimidazolyum tetrafloroborat (EMITFB) ve 1-bütil-1-metilpiperidinyum tetrafloroborat (BMPTFB)’ın düşük karbon çeliğinin (St37) 0.1 M HCl ortamındaki korozyon mekanizmasına etkisi, Elektrokimyasal Empedans Spektroskopisi (EIS) ve Potansiyodinamik Polarizasyon (TP) yöntemleri kullanılarak araştırılmış ve sonuçlar kıyaslanmıştır. Elektrokimyasal ölçümlerden sonra metal yüzeyindeki morfolojik değişiklikler Taramalı Elektron Mikroskobu (SEM) ve Enerji Kırınımı X-Işını Spektroskopisi (EDS) yardımıyla analiz edilmiştir. Elde edilen bulgular, çalışılan her iki bor katyonlu iyonik sıvının ihibitör olarak kullanılabileceğini göstermektedir. St37 çeliğinin 0.1 M HCl ortamındaki BMPTFB ve EMITFB kullanılmasına bağlı olarak hesaplanan inhibitör etkinliği (%IE) değerleri sırasıyla %87 ve %73’tür. St37 çeliğinin 0.1 M HCl ortamında korozyonuna BMPTFB’nin EMITFB’ye kıyasla yaklaşık %15 daha iyi koruduğu görülmüştür. 

Keywords

• Korozyon,Düşük karbon çeliği,Bor katkılı iyonik sıvı,EMITFB,BMPTFB

USING OF IONIC LIQUIDS CONTAINING BORON CATION AS CORROSION INHIBITOR IN 0.1 M HCl ENVIRONMENT

Abstract

The corrosion inhibition effect of 1-ethyl-3-methylimidazolium tetrafluoroborate (EMITFB) and 1-butyl-1-methylpiperidinium tetrafluoroborate (BMPTFB) as corrosion inhibitors was investigated on low carbon steel in 0.1 M HCl environment using Electrochemical Impedance Spectroscopy (EIS) and Tafel Polarization (TP) methods. The results from the two electrochemical techniques were compared. Morphological changes on the metal surface after electrochemical measurements were analyzed with the aid of Scanning Electron Microscopy (SEM) and Energy Diffraction X-Ray Spectroscopy (EDS). The findings show that the studied boron cationic ionic liquids can be used as inhibitor. The optimum inhibition efficacy (% IE) of 87% and 73% was achieved for BMPTFB and EMITFB respectively. It has been found that BMPTFB inhibits the steel corrosion by approximately 15% better than EMITFB in the considered acid environment.

Keywords

• Corrosion,Low carbon steel,Boron doped ionic liquid,EMITFB,BMPTFB

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