Erosion–corrosion of mild steel in hot caustic. Part I: NaOH solution

Rihan, Rihan Omar; Nešić, Srdjan

doi:10.1016/j.corsci.2005.09.018

Cited by 50 publications

(24 citation statements)

References 26 publications

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“…Table 3 give some information for the susceptibility of the studied steels in a NaOH solution at pH 13.6. It can be noted that the low carbon steel is susceptible to SCC, which is in compliance with the literature [14]. The non-polished prestressing steel is very susceptible to SCC in a high alkalinity medium, this susceptibility being in connection with the presence of a specific layer on the surface.…”

Section: Figuresupporting

confidence: 67%

Electrochemical behaviour and corrosion sensitivity of prestressed steel in cement grout

Blactot¹,

Brunet-Vogel²,

Farcas³

et al. 2007

WIT Transactions on Engineering Sciences, Vol 54

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The durability of prestressed concrete bridges primarily depends on the steel wire cables. Several disorders in these bridges are well known, such as fracture of these cables by stress corrosion cracking due to water penetration in the prestressing ducts. This water can contain various aggressive constituents with respect to corrosion (like chlorides). Its penetration inside the duct is due to the presence of sealing defects of the structure or in the concrete (like cracks). The second category of defects relates to the cement grout injection, which protects cables. This occurs due to a degradation of the grout in contact with water (problems of bleeding and segregation) leading to brittle fractures of steels. The first step of the study consisted in obtaining a corrosive liquid typical of a segregated cement paste on which electrochemical tests were done. Electrochemical tests in synthetic solutions defined from a bibliographical study and analysis of real cases of segregated cement grout were also realized. High strength and ordinary steel specimens were used and all the tests were mainly done in deaerated conditions. The main results can lead one to consider that, in oxygen free conditions, steel specimens surface can be either in active or passive state. The susceptibility of steels to stress corrosion cracking was determined by the means of models applied to potentiodynamic polarisation.

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Section: Figuresupporting

confidence: 67%

Electrochemical behaviour and corrosion sensitivity of prestressed steel in cement grout

Blactot¹,

Brunet-Vogel²,

Farcas³

et al. 2007

WIT Transactions on Engineering Sciences, Vol 54

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“…There are numerous standard test methods developed for testing and studying the corrosion resistance of metals/alloys. Studying the effect of flow on corrosion has been commonly performed by different testing methods, such as rotating cylinder electrodes 17,18 /disk [19][20][21] electrodes, impinging-jet test rigs [21][22][23][24] , rotating cages 25 , stationary electrodes [26][27][28] , and flow loops [29][30][31][32][33][34][35][36] . Data on electrochemical corrosion behavior of HSLA steels exposed to CO 2 containing solutions are not widely reported or available.…”

Section: Introductionmentioning

confidence: 99%

Electrochemical corrosion behavior of X52 and X60 steels in carbon dioxide containing saltwater solution

Rihan

2012

Mat. Res.

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X52 and X60 high strength low alloy (HSLA) steels are widely used in the construction of petroleum pipelines. This paper discusses the corrosion resistance of X52 and X60 steels in CO 2 containing saltwater at pH 4.4 and 50 °C. A circulating flow loop system inside an autoclave was used for conducting the experimental work. The rotating impeller speed was 2000 rpm. The corrosion rate was monitored using in situ electrochemical methods such as potentiodynamic sweep, linear polarization resistance, and electrochemical impedance spectroscopy (EIS) methods. Results indicated that the corrosion rate of X60 steel is relatively higher than that of X52 steel.

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“…Besides that, the weight loss of electrodes using NaHCO 3 is lower than NaOH and we can say that the two catalysts roughly have the same value of electrodes' weight loss with water which is without catalyst. It has been found that in some cases the corrosion was not removed entirely while in other cases some of the base metal was removed along with corrosion 11 .…”

Section: Weight Loss Measurementmentioning

confidence: 99%