Details

Autor(en) / Beteiligte

• Xu, L.Y.
• Su, X.
• Cheng, Y.F.

Titel

Effect of alternating current on cathodic protection on pipelines

Ist Teil von

• Corrosion science, 2013-01, Vol.66, p.263-268

Ort / Verlag

Kidlington: Elsevier Ltd

Erscheinungsjahr

2013

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• ► Determined the effect of alternating current on effectiveness of cathodic protection (CP). ► Tested and analyzed the effect of alternating current on CP potential recordings. ► Discussed the potential shift of CP applied galvanostatically or potentiostatically. In this work, the effects of alternating current (AC) on the performance of cathodic protection (CP) and the CP potential readings were investigated on a 16Mn pipeline steel in a simulated soil solution. The presence of AC interference decreases the CP effectiveness to protect the steel from corrosion. Only when CP potential is sufficiently negative, the steel is under a complete protection even when the AC current density is 400A/m2. Moreover, the AC would shift CP potential from the designed value. The effect of AC on the CP performance depends on the cathodic potential applied on the steel.