Enhanced corrosion protection of mild steel in acidic media using p -bromopiperazinylbenzene: An EIS study

作     者：Mohanad Muzahem Khalaf Muzher Taha Mohamed M.M. Hanoon A.A. Khadom F.F. Sayyid A.M. Mustafa Ahmed A. Al-Amiery 

作者机构：Materials Techniques Engineering Department Technical Engineering College-Baghdad Middle Technical University Iraq Department of Material Engineering- College of Engineering- University of Diyala Iraq Production and Metallurgy Engineering Department University of Technology-Iraq P.O. Box: 10001 Baghdad Iraq Department of Chemical Engineering College of Engineering University of Diyala P.O. Box: 32001 Diyala Iraq Engineering Technical College Al-Ayen Iraqi University AUIQ An Nasiriyah Dhi Qar Iraq Department of Chemical and Process Engineering Faculty of Engineering and Built Environment University Kebangsaan Malaysia (UKM) Bangi P.O. Box 43000 Selangor Malaysia 

出 版 物：《Next Research》 

年 卷 期：2025年第2卷第1期

主　　题：Corrosion inhibition Para-bromopiperazinylbenzene Mild Steel Acidic Medium DFT analysis 

摘      要：This study proposes the new use of p-bromopiperazinylbenzene as an inhibitor for the corrosion of mild steel immersed in 1.0 M HCl solution by means of electrochemical impedance spectroscopy (EIS). Other traditional inhibitors may not contain bromine and nitrogen atoms which makes the structure of p-bromopiperazinylbenzene to have better adsorption characteristics and high corrosion duty. Inhibitor concentration between 0.1 and 0.5 mM was studied for 5 h at 303 K and significant enhancement in polarization resistance (Rp) and decreased values of double-layer capacitance, CPE were recorded which reached 87 % when concentration of p-bromopiperazinyl benzene was 0.5 mM. Data support the formation of a tightly bound protective coating on the mild steel surface that restricts the infiltrations of corrosion ions and thereby lowers corrosion rate. p-bromopiperazinyl benzene is put forward as an industrially useful corrosion inhibitor that is effective at low concentration and can withstand acidic environments thereby opening new possibilities of tackling corrosion in difficult acidic environments.