Corrosion Processes Controlled by Phosphonic Acid Nano-layers

被引：4

作者：

Abohalkuma, Talah ^{[1
,2
]}

Shaban, Abdul ^{[3
]}

Telegdi, Judit ^{[3
,4
]}

机构：

[1] Obuda Univ, PhD Sch Mat Sci & Technol, Becsi Ut 96-B, H-1016 Budapest, Hungary

[2] Libyan Petr Inst, Girgarisg Rd Km 7, Tripoli, Libya

[3] Hungarian Acad Sci, Inst Mat & Environm Chem, Funct Interfaces Res Grp, Res Ctr Nat Sci, Magyar Tudosok Korutja 2, H-1117 Budapest, Hungary

[4] Obuda Univ, Inst Prod Design, Doberdo Ut 6, H-1034 Budapest, Hungary

来源：

PERIODICA POLYTECHNICA-CHEMICAL ENGINEERING | 2016年 / 60卷 / 03期

关键词：

corrosion; self-assembled molecular (SAM); phosphonic acid; INHIBITION; IRON; PROTECTION;

D O I：

10.3311/PPch.8260

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Self assembled monolayers (SAM) formed by fluoro-phosphonic and undecenyl-phosphonic acids on carbon steel surfaces as anticorrosive nanocoatings were investigated. The anticorrosive efficacy of these SAM layers was followed by atomic force microscopy, when the change in the surface morphology caused by layer deposition and corrosion processes was monitored. The corrosion process was determined by electrochemical potentiodynamic polarization and cyclic voltammetry. Results showed that both chemicals produced good protection against corrosion as anodic inhibitors specially with increasing the time of layer formation which results in a more compact molecular film. According to the AFM images, the fluoro-phosphonic acid self-assembled molecular layer can control the general as well as the pitting corrosion, but the SAM layers of the undecenyl-phosphonic acid cannot inhibit the pitting corrosion. The AFM measurements confirmed the electrochemical results.

引用

页码：165 / 168

页数：4

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