Unravelling the corrosion inhibition mechanisms of bi-functional inhibitors by EIS and SEM-EDS

作者：Garcia S J^*; Markley T A; Mol J M C; Hughes A E

来源：Corrosion Science, 2013, 69: 346-358.

DOI：10.1016/j.corsci.2012.12.018

• Alloy
• Aluminium
• Rare-earth elements
• EIS
• Neutral inhibition

In this work the corrosion inhibition effect of aluminium alloy AA2024-T3 in aqueous solution by an inorganic cerium salt (i.e. cerium chloride) and an organic one (i.e. cerium dibutyl phosphate) is presented. The research involved long term immersion tests (up to 8 d) followed up by EIS. The analysis was complemented by a systematic selection of the most probable equivalent circuits and scanning electron microscope analysis combined with X-ray energy dispersive spectroscopy. This study highlights the different corrosion protection mechanisms of organic and inorganic ions. A model of protection is suggested based on the combination of techniques.

• 出版日期2013-4
• 单位CSIRO