Evaluation of corrosion rate of 1040 carbon steel in soil by electrochemical frequency modulation (EFM)

被引：0
|
作者：
de Matos, Tiago Scheffer [1 ,2 ]
Portella, Kleber Franke [1 ,2 ]
Henke, Sergio Luiz [3 ]
Gaivao Portella Braganca, Mariana D'Orey [1 ]
de Sousa Berredo, Alessandro Cesar [4 ]
机构：
[1] Lactec, Rodovia BR-116,Km 98,8-813, BR-81531980 Curitiba, Parana, Brazil
[2] Univ Fed Parana, Programa Posgrad Engn & Ciencias Mat PIPE, Av Cel Francisco H dos Santos 100, BR-81530000 Curitiba, Parana, Brazil
[3] Univ Fed Parana, Dept Engn Mecan, Av Cel Francisco H dos Santos 100, BR-81530000 Curitiba, Parana, Brazil
[4] Transmissora Alianca Energia Elect SA TAESA, Praca Quinze Novembro 20, BR-20010010 Rio De Janeiro, RJ, Brazil
来源：
MATERIA-RIO DE JANEIRO | 2020年 / 25卷 / 04期
关键词：
Corrosion rate; carbon steel; soil; EFM; LPR; BEHAVIOR;
D O I：
10.1590/S1517-707620200004.1210
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The instantaneous corrosion rate of 1040 carbon steel buried in soil was measured by electrochemical frequency modulation (EFM) and linear polarization resistance (LPR). The results were compared to each other and to the corrosion rate data obtained by the analysis of corrosion coupons exposed in field. The values of instantaneous corrosion rate found in the soil by EFM were 0.088 +/- 0.008 mm / year, by LPR of 0.075 +/- 0.005 mm / year. The corrosion rate values obtained by weight loss of corrosion coupons were 0.064 +/- 0.016 mm / year. Thus, in the experimental conditions imposed it can be inferred that the results obtained by the EFM technique served to diagnose the performance of 1040 carbon steel subjected to a soil corrosion process.
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页码：1 / 7
页数：7
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