The inhibition efficiency (IE_inh %) of the (2-aminobenzyl)triphenylphosphonium bromide (ABTPPB) environmental friendly inhibitor on mild steel (MS) corrosion in 0.5 M H₂SO₄ solution at concentrations (10⁻⁵ to 10⁻² M) and temperatures (298 to 328 K) have been achieved using potentiostatic polarization (PP), galvanostatic polarization (GP), electrochemical impedance spectroscopy (EIS), and surface characterized via the scanning electron microscopy (SEM) with energy dispersive x-ray (EDX) spectroscopy, and atomic force microscopy (AFM). The results confirmed that ABTPPB was a potent inhibitor for MS in corrosive medium with the IE_inh (%) adequate to 99% in 10⁻² M. EIS outcomes revealed the enlarged capacitive loop in the attendance of mitigator in comparison to that of the merely acid specifies a high degree of mitigation efficiency. The definite correlation between the experimental results and isotherm utility was achieved using Langmuir Adsorption (LA) isotherm, and the inhibitor is being chemisorbed predominantly on the MS surface. Both SEM-EDX and AFM analyses sustained the formation of protective layers of the ABTPPB molecules on the sample surface. Quantum chemical (QC) calculations were employed for computational calculations, and the acquired results were instigated to be reliable with the experimental findings.

（2-氨基苄基）三苯基溴化膦（ABTPPB）环保型缓蚀剂对0.5 MH ₂ SO ₄溶液中浓度（10 ^-5至10 ^-2  M）的低碳钢（MS）腐蚀的抑制效率（IE _inh％）和使用恒电位极化（PP），恒电流极化（GP），电化学阻抗谱（EIS）以及通过具有能量色散X射线（EDX）的扫描电子显微镜（SEM）对表面进行了表征，可以达到298至328 K的温度光谱学和原子力显微镜（AFM）。结果证实ABTPPB是腐蚀性介质中MS的有效抑制剂，IE _inh（％）足以在10中达到99％^-2  M. EIS结果表明相比于所述仅仅酸指定高度的缓解效率的在缓和的出勤扩大电容回路。使用Langmuir吸附（LA）等温线可实现实验结果与等温线效用之间的明确相关性，并且该抑制剂主要被化学吸附在MS表面上。SEM-EDX和AFM分析都在样品表面上持续形成ABTPPB分子的保护层。量子化学（QC）计算被用于计算计算，并且所获得的结果被认为具有实验结果是可靠的。