Rust preventives (RPs) are often employed to protect carbon steel from atmospheric corrosion during manufacture, storage, and/or transportation. In this work, commercial oil-based RPs containing graphene and PREFER were tested as protective layers on SAE 1006 steel. PREFER is a bi-dimensional/layered zeolite formed by ordered ferrierite layers. X-ray diffraction analysis confirmed formation of the zeolite. Electrochemical impedance spectroscopy results showed that the presence of graphene and PREFER in the RP provided ten-fold higher resistance than the RP without additives, after 22 h of immersion in 0.1 mol L−1 NaCl. On the other hand, the RP containing delaminated PREFER provided no corrosion protection, confirming the bidimensional effect of the filler in the oil-based RP. Salt spray and humidity test results corroborated the electrochemistry data. The steel sample coated with RP_PREFER-CTAB presented red corrosion on less than 10 % of the surface. The sample coated with RP_G did not present corrosion and the coating was easier to remove using alkaline cleaning solution, indicating its superiority as a temporary coating, compared to RP_PREFER-CTAB and the oil containing only sulfonate inhibitor.

中文翻译：

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通过在油性软涂料中加入 2D 沸石和石墨烯来提高防锈性


防锈剂 （RP） 通常用于保护碳钢在制造、储存和/或运输过程中免受大气腐蚀。在这项工作中，测试了含有石墨烯和 PREFER 的商业油基 RP 作为 SAE 1006 钢上的保护层。PREFER 是由有序的铁矿层形成的二维/层状沸石。X 射线衍射分析证实了沸石的形成。电化学阻抗谱结果表明，在 0.1 mol L-1 NaCl 中浸泡 22 小时后，RP 中存在石墨烯和 PREFER 的电阻比没有添加剂的 RP 高 10 倍。另一方面，含有分层 PREFER 的 RP 没有提供腐蚀保护，证实了填料在油基 RP 中的二维效应。盐雾和湿度测试结果证实了电化学数据。涂有 RP_PREFER-CTAB 的钢样品在不到 10% 的表面呈现红色腐蚀。涂有 RP_G 的样品不存在腐蚀，使用碱性清洁溶液更容易去除涂层，表明与 RP_PREFER-CTAB 和仅含有磺酸盐抑制剂的油相比，它作为临时涂层的优势。