The role of zinc aluminum phosphate anticorrosive pigment in Protective Performance and cathodic disbondment of epoxy coating
The role of zinc aluminum phosphate anticorrosive pigment in Protective Performance and cathodic disbondment of epoxy coating
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DOI：
10.1016/j.corsci.2009.12.019
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发表时间：
2010-04
影响因子：
8.3
通讯作者：
R. Naderi;M. M. Attar-M.
中科院分区：
文献类型：
--
作者：
R. Naderi;M. M. Attar-M.
研究了磷酸锌铝（ZPA）颜料环氧涂层的防护性能和阴极剥离性能。在溶液中，从EIS和电化学噪声数据中提取的ZPA的上级腐蚀抑制与保护层的沉积有关。电化学阻抗谱分析表明，磷酸锌的改性对涂层的防护性能和抗阴极剥离性能有显著影响。与ZPA相比，磷酸锌的引入导致阴极剥离试验的性能较差。在ZPA的存在下，由EIS数据推断的剥离前沿的沉淀被SEM证实。
Protective performance and cathodic disbondment of epoxy coating pigmented with zinc aluminum phosphate (ZPA) were studied in this work. In solution, superior corrosion inhibition of ZPA extracted from EIS and electrochemical noise data was connected to deposition of a protective layer. EIS evaluation of the pigmented coatings indicated significant effect of modification of zinc phosphate on the protective performance as well as resistance to cathodic disbonding. Compared to ZPA, introduction of zinc phosphate resulted in inferior performance in cathodic disbonding test. In presence of ZPA, precipitation at disbonding front inferred from EIS data was confirmed by SEM.