Study of cathodic protection shielding under coating disbondment on pipelines
作者： Da Kuang , Y. Frank Cheng
DOI: 10.1016/J.CORSCI.2015.07.012
关键词:
摘要: Abstract In this work, the cathodic protection (CP) shielding behavior of pipeline coatings, i.e., high density polyethylene (HDPE) and fusion bonded epoxy (FBE), was investigated. While HDPE is a CP-shielding coating, FBE permeable to CP. The structure does not change upon CP permeating test, water molecules are absorbed into coating. Conversely, there obvious changes functional groups in FBE. Water uptakes coating occur continuously with time. permeation through time dependent. A more negative potential level enhances permeation.
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