Protic ionic liquid (PIL) 2‐hydroxyethylammonium oleate (2HEAOl) proved to be a good lubricant for aluminum‐forming processes. However, with the aim of keeping the formed component integrity, it is interesting that the same substance employed during forming does not need to be removed and works out as corrosion inhibitor. Then, the aim of this study was to test the performance of 2HEAOl as corrosion inhibitor for aluminum in neutral 0.5 mol/L NaCl medium by electrochemical characterization. Results showed that the concentration of 5 × 10⁻⁴ mol/L was a suitable concentration to promote corrosion inhibition until 72 h at the high chloride concentration studied. The PIL worked out as mixed‐type organic corrosion inhibitor, as it promoted the diminution of the oxygen reduction reaction rate and, in consequence, the pit initiation by its adsorption on the metal surface.

中文翻译：

---

2-羟基乙基油酸铵质子离子液体作为中性介质中铝的缓蚀剂

质子离子液体（PIL）油酸2-羟乙基铵（2HEAOl）被证明是铝成型工艺的良好润滑剂。然而，为了保持所形成的部件的完整性，有趣的是，在形成过程中使用的相同物质无需去除，并且可以用作腐蚀抑制剂。然后，本研究的目的是通过电化学表征测试2HEAO1作为中性0.5 mol / L NaCl介质中铝的缓蚀剂的性能。结果表明浓度为5×10 ^-4 在研究的高氯化物浓度下，mol / L是促进腐蚀抑制直至72 h的合适浓度。PIL起到了混合型有机腐蚀抑制剂的作用，因为它促进了氧还原反应速率的降低，并因此促进了其在金属表面上的吸附而引发了蚀坑。