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SURFACE-TOLERANT, ALUMINUM-FOIL, TAPE COATING

机译:耐铝箔,胶带涂料

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Aluminum foil coatings are applied by adhering a laminated film containing an aluminum foil layer to a steel substrate. Aluminum foil coatings are known to possess better barrier properties and provide better protection to corners (sharp edges) than conventional liquid applied coatings of similar film thickness. A cyclic salt-fog test was used to characterize the corrosion control behavior of various aluminum foil coatings applied to rusted steel. The test data showed that, in addition to controlling corrosion by a barrier mechanism, some of the foil coatings controlled the spread of corrosion at scribes and holidays by a cathodic protection mechanism. Rust creepage rate decreased as foil thickness increased. Most of the foil coatings outperformed the epoxy mastic coating that was used as a comparison. Adhering bare foil directly to a minimally prepared, rusted steel substrate resulted in rapid pitting and perforation of the foil; however pitting did not occur if an intermediate organic layer was present, between the foil and the rusted steel. In the maintenance of minimally prepared steel in a marine atmosphere, a properly designed coating system, containing an aluminum foil layer, would be expected to be significantly more durable than a traditional liquid applied coating of similar film thickness.
机译:通过将含有铝箔层的层压膜粘附到钢基材上,施加铝箔涂层。已知铝箔涂层具有更好的屏障性能,并且比与类似膜厚度的常规液体施加的涂层提供更好的拐角(尖锐边缘)。循环盐雾试验用于表征各种铝箔涂层的腐蚀控制行为,其应用于生锈的钢。测试数据表明,除了通过阻挡机构控制腐蚀之外,一些箔涂层通过阴极保护机构控制了在划线和假期的腐蚀的传播。由于箔厚度增加,防锈爬电速率下降。大多数箔涂层优于使用作为比较的环氧乳香涂层。将裸箔直接粘附到最小制备的生锈钢基板中,导致箔的快速蚀,穿孔;然而,如果存在中间有机层,在箔和生锈的钢之间,则不会发生点蚀。在Marine大气中的最小制备的钢的维护中,预期含有铝箔层的适当设计的涂层系统,比传统的液体涂覆的类似膜厚度明显更耐用。

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