Analyses of Cathodic Disbonding Products of 3PE Coating on Buried Pipelines
摘 要
采用阴极剥离试验研究了管道3PE防腐蚀层的阴极剥离产物,通过扫描电子显微镜、红外光谱仪、综合热分析仪等仪器,对阴极剥离区域及其产物进行了分析。结果表明,当管道3PE防腐蚀层发生阴极剥离时,其剥离区域内生成了白色产物。经检测该白色产物应为混合物,主要由3PE防腐蚀层的粘胶层或环氧底漆在碱性条件下的解离产物及钙、镁离子形成的无机盐共同组成。
Abstract
Using electrochemical method, the product of cathodic disbonding of 3PE coating on buried pipelines was studied. Scanning electron microscopy, infrared spectrometer and comprehensive thermal analyzer were used to analyze the cathodic stripping area and the product of the sample. The results show that when the disbonding of 3PE anticorrosive layer disintegration occurred, white products were found in stripping area. The product was a mixture of inorganic salt and organics. The products of 3PE anticorrosive coating layer or epoxy primer under alkaline conditions constituted the organics, and the inorganic salt was composed of calcium, magnesium ions.
中图分类号 TG174.46
所属栏目 应用技术
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收稿日期 2013/3/4
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备注张婷(1987-),助教,硕士,从事金属材料腐蚀与防护相关研究,
引用该论文: ZHANG Ting,GONG Min,ZHENG Xing-wen. Analyses of Cathodic Disbonding Products of 3PE Coating on Buried Pipelines[J]. Corrosion & Protection, 2013, 34(12): 1125
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参考文献
【1】张其滨,刘金霞,赫连建锋. 管道3EP涂层的阴极剥离性能研究[J]. 腐蚀与防护,2006,27(7): 331-333.
【2】闫茂成,王俭秋. 埋地管线覆盖层下阴极保护的有效性[J]. 中国腐蚀与防护学报,2007,27(5):257-262.
【3】FESSLER R,MARKWORTH A J,PARKINS R N. Cathodic protection levels under disbonded coatings[J]. Corrosion,1983,39(1):20-25.
【4】CHEN X,LI X G. Effect of cathodic protection on corrosion of pipeline steel under disbanded coating[J]. Corrsion Science,2009,51:2242-2245.
【5】胡士信. 管道阴极保护技术现状与展望[J]. 腐蚀与防护,2004,25(3):93-101.
【6】杨印臣. 埋地钢质管道最大保护电位的探讨[J]. 材料保护,2007,40(12):67-69.
【7】王志远,许海波. 土壤环境中阴极保护电位对涂层的影响[J]. 腐蚀与防护,2005,20(1):43-46.
【2】闫茂成,王俭秋. 埋地管线覆盖层下阴极保护的有效性[J]. 中国腐蚀与防护学报,2007,27(5):257-262.
【3】FESSLER R,MARKWORTH A J,PARKINS R N. Cathodic protection levels under disbonded coatings[J]. Corrosion,1983,39(1):20-25.
【4】CHEN X,LI X G. Effect of cathodic protection on corrosion of pipeline steel under disbanded coating[J]. Corrsion Science,2009,51:2242-2245.
【5】胡士信. 管道阴极保护技术现状与展望[J]. 腐蚀与防护,2004,25(3):93-101.
【6】杨印臣. 埋地钢质管道最大保护电位的探讨[J]. 材料保护,2007,40(12):67-69.
【7】王志远,许海波. 土壤环境中阴极保护电位对涂层的影响[J]. 腐蚀与防护,2005,20(1):43-46.
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