Effect of silicate-based films on the corrosion behavior of the API 5L X80 pipeline steel

被引：30

作者：

de Oliveira, Leandro Antonio ^{[1
]}

Correa, Olandir Vercino ^{[2
]}

dos Santos, Demetrio Jackson ^{[1
]}

Zuniga Paez, Alejandro Andres ^{[1
]}

Lopes de Oliveira, Mara Cristina ^{[1
]}

Antunes, Renato Altobelli ^{[1
]}

机构：

[1] Univ Fed Abc, Ctr Engn Modelagem & Ciencias Sociais Aplicadas C, BR-09210580 Santo Andre, SP, Brazil

[2] IPEN, BR-05508000 Sao Paulo, SP, Brazil

来源：

CORROSION SCIENCE | 2018年 / 139卷

关键词：

API SL X80; Corrosion; XPS; Sodium silicate films; Pipeline steel; ELECTROCHEMICAL IMPEDANCE SPECTROSCOPY; RAY PHOTOELECTRON-SPECTROSCOPY; CARBON-STEEL; ALKALINE-SOLUTION; AQUEOUS-SOLUTION; SODIUM-SILICATE; IRON; XPS; COATINGS; CRACKING;

D O I：

10.1016/j.corsci.2018.04.035

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The aim of this work was to investigate the effect of silicate-based films on the corrosion resistance of the API 5L X80 steel in carbonate-bicarbonate solution at room temperature. The films were electrochemically obtained by anodic and cathodic treatments and by immersion in 1.0 M sodium metasilicate solution. The corrosion behavior was evaluated using electrochemical impedance spectroscopy and potentiodynamic polarization. Film morphology was examined by scanning electron microscopy. Adhesion strength was measured by pull-off tests. The chemical composition was evaluated by X-ray photoelectron spectroscopy. The anodic film yielded the best corrosion resistance (protection efficiency 83%). The protection mechanism is discussed.

引用

页码：21 / 34

页数：14

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