Corrosion inhibition of N80 steel in 15% HCl by pyrazolone derivatives: electrochemical, surface and quantum chemical studies

Ansari K. R.; Quraishi M. A.; Singh Ambrish; Ramkumar Sowmya; Obote Ime B.

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Corrosion inhibition of N80 steel in 15% HCl by pyrazolone derivatives: electrochemical, surface and quantum chemical studies

机译：通过吡唑酮衍生物在15％HCl中腐蚀N80钢的腐蚀抑制：电化学，表面和量子化学研究

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The corrosion protection of N80 steel in 15% HCl by two pyrazolone derivatives namely 2-(3-amino-5-oxo-4,5-dihydro-1H-pyrazol-1-yl)(p-tolyl) methyl)malononitrile (PZ-1) and 2-((3-amino-5-oxo-4,5-dihydro-1H-pyrazol-1-yl)(phenyl)methyl)malononitrile (PZ-2) has been investigated by using gravimetric, electrochemical and quantum chemical studies. The observed results reveal that PZ-1 is a better inhibitor than PZ-2. Tafel polarization showed that PZs are mixed type inhibitors but dominantly affect the cathodic reaction. Both inhibitors were found to obey the Langmuir adsorption isotherm. Scanning electron microscopy (SEM) and scanning electrochemical microscopy (SECM) images support the protection of the N80 steel in the presence of the PZs. Quantum chemical study reveals that both inhibitors have a tendency to get protonated and this result supports the experimental observations.

机译：通过两种吡唑酮衍生物在15％HCl中腐蚀N80钢的腐蚀保护，即2-（3-氨基-5-氧代-4,5-二氢-1-吡唑-1-基）（对甲苯甲基）甲基）丙二腈（PZ - 通过使用重量计，电化学和，研究了-1）和2 - （（3-氨基-5-氧代-4,5-二氢-1-吡唑-1-基，苯基）丙二腈（PZ-2）。量子化学研究。所观察结果表明，PZ-1是比PZ-2更好的抑制剂。 Tafel偏振显示，PZ是混合式抑制剂，但主要影响阴极反应。发现这两个抑制剂都遵守朗米尔吸附等温线。扫描电子显微镜（SEM）和扫描电化学显微镜（SECM）图像在PZS存在下支持N80钢的保护。量子化学研究表明，两种抑制剂都有趋势得到质子化，并且该结果支持实验观察结果。

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《RSC Advances》 |2016年第29期|共12页
作者
Ansari K. R.; Quraishi M. A.; Singh Ambrish; Ramkumar Sowmya; Obote Ime B.;
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Banaras Hindu Univ Indian Inst Technol Dept Chem Varanasi 221005 Uttar Pradesh India;

Banaras Hindu Univ Indian Inst Technol Dept Chem Varanasi 221005 Uttar Pradesh India;

Lovely Profess Univ Dept Chem LFTS Phagwara 144402 Punjab India;

PSGR Krishnammal Coll Women Dept Chem Coimbatore 641004 Tamil Nadu India;

King Fahd Univ Petr &

Minerals Res Inst Ctr Res Excellence Corros Dhahran 31261 Saudi Arabia;

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中图分类化学;
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1. Corrosion inhibition of N80 steel in 15% HCl by pyrazolone derivatives: electrochemical, surface and quantum chemical studies [J] . Ansari K. R., Quraishi M. A., Singh Ambrish, RSC Advances . 2016,第29期

机译：通过吡唑酮衍生物在15％HCl中腐蚀N80钢的腐蚀抑制：电化学，表面和量子化学研究
2. Corrosion inhibition of N80 steel in 15% HCl by pyrazolone derivatives: electrochemical, surface and quantum chemical studies [J] . K. R. Ansari, M. A. Quraishi, Ambrish Singh, RSC Advances . 2016,第29期

机译：通过吡唑酮衍生物在15％HCl中腐蚀N80钢的腐蚀抑制：电化学，表面和量子化学研究
3. Pyridine derivatives as corrosion inhibitors for N80 steel in 15% HCl: Electrochemical, surface and quantum chemical studies [J] . Ansari K. R., Quraishi M. A., Singh Ambrish Measurement . 2015,第Null期

机译：吡啶衍生物作为N80钢在15％HCl中的腐蚀抑制剂：电化学，表面和量子化学研究
4. Adsorption Properties and Inhibition of Mild Steel Corrosion in 15 HCl By 3-((1H-indol-3-yl)(4-methoxyphenyl)methyl)-1H-indole: Electrochemical Study [C] . Debasis Behera, Sushil Kumar, Rajesh Ranjan Sinha, DAE Solid State Physics Symposium . 2014

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5. Electrochemical surface potential and mass loss corrosion investigation of improved corrosion resistant steels for highway bridge construction [D] . Conrad, Megan B. 2009

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7. Exploring the corrosion inhibition effect of two hydrazone derivatives for mild steel corrosion in 1.0 M HCl solution via electrochemical and surface characterization studies [O] . Abdelkarim Chaouiki 2020

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Corrosion inhibition of N80 steel in 15% HCl by pyrazolone derivatives: electrochemical, surface and quantum chemical studies

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