Stress corrosion cracking of microalloyed pipeline steel in biofuels E-10 and E-85

Del-Pozo, Adrian; Torres-Islas, A.; Villalobos, Julio C.; Sedano, A.; Martı́nez, H.; Campillo, B.; Serna, S.

doi:10.1080/1478422x.2018.1523774

Cited by 2 publications

(2 citation statements)

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“…Al + CH 3 COOH → 3/2H 2 + Al(CO 3 COO) 3 (7) Water either facilitates aqueous conditions that enhance corrosion processes, or forms protective layers of corrosion products, such as bayerite (Al(OH) 3 ) or boehmite (AlOOH) [30]. This film can be disrupted in some localized places or, due to the amount of water and oxygen present in the blend, it does not cover the whole Al surface, inducing a localized type of corrosion, such as the observed plots.…”

Section: Discussionmentioning

confidence: 99%

“…However, alcohol absorbs water because it is highly hygroscopic and shows ethanol impurities (i.e., organic acids, esters, and ketones), which makes metallic materials that come in contact with ethanol-gasoline highly susceptible to corrosive attacks [1][2][3]. Numerous studies have been undertaken to evaluate the corrosion behavior of metallic materials used in components of vehicle fuel systems [4][5][6][7][8][9][10][11][12][13][14][15][16][17]. Bahena et al [18] evaluated the corrosion behavior of four metals, including pure aluminum, chromium steel carbon steel, and copper in a 20% ethanol-80-gasoline blend using both weight loss and electrochemical impedance spectroscopy.…”

Section: Introductionmentioning

confidence: 99%

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Corrosion Behavior of Al in Ethanol–Gasoline Blends

et al. 2020

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The corrosion behavior of pure aluminum (Al) in 20 v/v% ethanol–gasoline blends has been studied using electrochemical techniques. Ethanol was obtained from different fruits including sugar cane, oranges, apples, or mangos, whereas other techniques included lineal polarization resistance, electrochemical noise, and electrochemical impedance spectroscopy for 90 days. Results have shown that corrosion rates for Al in all the blends were higher than that obtained in gasoline. In addition, the highest corrosion rate was obtained in the blend containing ethanol obtained from sugar cane. The corrosion process was under charge transfer control in all blends; however, for some exposure times, it was under the adsorption/desorption control of an intermediate compound. Al was susceptible to a localized, plotting type of corrosion in all blends, but they were bigger in size and in number in the blend containing ethanol obtained from sugar cane.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Corrosion Behavior of Al in Ethanol–Gasoline Blends

et al. 2020

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Effect of temperature on corrosion behavior of X70 pipeline steel in 3.5% NaCl solution

Wu¹

2021

International Journal of Electrochemical Science

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Effect of temperature on the corrosion behavior of X70 pipeline steel in 3.5% NaCl solution was studied by the immersion test, polarization curves, electrochemical impedance spectroscopy (EIS), scanning electron microscope (SEM), and X-ray diffraction (XRD). The corrosion potential (Ecorr) decreases, and the corrosion current density (Icorr) increases with the increase of temperature, so the corrosion rate increases. With the increase of temperature, the size of the capacitive semicircle of the Nyquist plots and the modulus of the impedance decreases at the same immersion time. Moreover, the characteristic frequency in the phase Angle plots decreases. The double charge layer capacitance (Qdl) increases with the increase of temperature and the immersion time. With the increase of temperature, the solution resistance (Rs), the charge transfer resistance (Rt) and the adsorption resistance of the corrosion product (Rf) decreases, the adsorption capacitance of the corrosion product (Qf) increases, the surface of the X70 steel was covered by a large amount of the gathered corrosion products, and the amount and the size of corrosion products significantly increases. With the increase of immersion time, Rt, the trend of the modulus of the impedance at low frequency, and Rf decreases at 25℃, 40℃, and 60℃, a small amount of corrosion products covered the surface of the X70 steel and more cracks were appeared on the corrosion products. However, at 80℃ and 95℃, these increases, a large amount of corrosion products covered the surface of the X70 steel, which is consistent with the increase of Rf that inhibits the corrosion process. At different temperatures and immersion time, the main composition of the corrosion products is similar, with Fe3O4, FeOOH and Fe2O3.

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Stress corrosion cracking of microalloyed pipeline steel in biofuels E-10 and E-85

Cited by 2 publications

References 34 publications

Corrosion Behavior of Al in Ethanol–Gasoline Blends

Corrosion Behavior of Al in Ethanol–Gasoline Blends

Effect of temperature on corrosion behavior of X70 pipeline steel in 3.5% NaCl solution

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