Corrosion of Buried Pipeline Under Effect of Electrical Field With Industrial Frequency

Yin, Kohua; Tang, Minhua; Hsiong, Chiangjian

doi:10.2523/10578-ms

Cited by 1 publication

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“…Polarity reversal occurred to Mg sacrificial anode as soon as alternating current interference of 100 A/m 2 (or larger) was applied. Yin Kehua et al [15] studied the effects of AC interference on the properties of Mg, Al, and Zn sacrificial anodes in soil. The results showed that with the increase of AC interference, the output negative current density of Mg and Al would decrease continuously, while output current density of Zn was relatively stable.…”

Section: Introductionmentioning

confidence: 99%

Study on the Electrochemical Performance of Sacrificial Anode Interfered by Alternating Current Voltage

Chu

Shen

2018

International Journal of Corrosion

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The effect of alternating current (AC) voltage of 0V, 1V, 3V, and 5V on magnesium alloy sacrificial anode electrochemical properties was studied by open circuit potential (OCP) analysis, electrochemical impedance spectroscopy (EIS), and polarization curve measurements. The results demonstrate that the AC voltage has a great effect on the magnesium alloy sacrificial anode. The corrosion control is anode control in the first two days with no AC interference. The stray current accelerates the transmission and diffusion of oxygen, so the corrosion rate under AC interference is higher than that with no AC interference. And the corrosion control becomes cathodic control under AC interference. The corrosion rate of the sacrificial anode is faster and faster as the AC interference voltage increases in the range of 0~5V, while the corrosion inclination is weakened.

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Section: Introductionmentioning

confidence: 99%