本研究旨在分析阿美项目中熔结环氧(Fusion Bond Epoxy, FBE)粉末涂层的质量控制方法。首先通过对比阿美项目FBE内涂标准与国内标准,分析了FBE涂层质量控制的重要性和现有问题。接着以阿美项目为例,分析了FBE内涂工艺施工难点及质量控...本研究旨在分析阿美项目中熔结环氧(Fusion Bond Epoxy, FBE)粉末涂层的质量控制方法。首先通过对比阿美项目FBE内涂标准与国内标准,分析了FBE涂层质量控制的重要性和现有问题。接着以阿美项目为例,分析了FBE内涂工艺施工难点及质量控制要点。最后总结了该质量标准的优势和局限性,对国内外FBE内涂质量把控起到了重要的借鉴意义。展开更多
Methods for evaluating the resistance to cathodic disbondment （RCD） of anti-corrosion coatings on buried pipelines were reviewed. It is obvious that these traditional cathodic disbondment tests （CDT） have some dis...Methods for evaluating the resistance to cathodic disbondment （RCD） of anti-corrosion coatings on buried pipelines were reviewed. It is obvious that these traditional cathodic disbondment tests （CDT） have some disadvantages and the evaluated results are only simple figures and always rely on the subjective experience of the operator. A new electrochemical method for evaluating the RCD of coatings, that is, the potentiostatic evaluation method （PEM）, was developed and studied. During potentiostatic anodic polarization testing, the changes of stable polarization current of specimens before and after cathodic disbonding （CD） were measured, and the degree of cathodic disbondment of the coating was quantitatively evaluated, among which the equivalent cathodic disbonded distance AD was suggested as a parameter for evaluating the RCD. A series of testing parameters of the PEM were determined in these experiments.展开更多
文摘本研究旨在分析阿美项目中熔结环氧(Fusion Bond Epoxy, FBE)粉末涂层的质量控制方法。首先通过对比阿美项目FBE内涂标准与国内标准,分析了FBE涂层质量控制的重要性和现有问题。接着以阿美项目为例,分析了FBE内涂工艺施工难点及质量控制要点。最后总结了该质量标准的优势和局限性,对国内外FBE内涂质量把控起到了重要的借鉴意义。
基金This work is financially supported by the National Natural Science Foundation of China (No.2992021).
文摘Methods for evaluating the resistance to cathodic disbondment （RCD） of anti-corrosion coatings on buried pipelines were reviewed. It is obvious that these traditional cathodic disbondment tests （CDT） have some disadvantages and the evaluated results are only simple figures and always rely on the subjective experience of the operator. A new electrochemical method for evaluating the RCD of coatings, that is, the potentiostatic evaluation method （PEM）, was developed and studied. During potentiostatic anodic polarization testing, the changes of stable polarization current of specimens before and after cathodic disbonding （CD） were measured, and the degree of cathodic disbondment of the coating was quantitatively evaluated, among which the equivalent cathodic disbonded distance AD was suggested as a parameter for evaluating the RCD. A series of testing parameters of the PEM were determined in these experiments.
