Scientists used the unique properties of the Kratos Axis Ultra to prove that Migrating Corrosion Inhibitors (MCI) prevent corrosion of steel rebars in concrete.

• Scientists have studied the corrosion inhibition of two commercially available migrating corrosion inhibitors (MCI 2021 and MCI 2022) on steel rebar in three concrete densities, by means of XPS analysis and depth profiling.


• XPS analysis has demonstrated the presence of inhibitor on the steel rebar surface, verifying MCI migration through the concrete layer. XPS depth profiling showed 100nm layer of amine-rich compound on the rebar surface, necessary for satisfactory corrosion resistance in the presence of chloride ions.


• The research team has further identified that the MCI 2021 and MCI 2022 products are more effective in the low-density concrete and MCI 2022 has better corrosion protection than MCI 2021.

Techniques: XPS analysis and depth profiling.

Source: Bavarian B. & Reiner L; (2002); "Corrosion Protection of Steel Rebar in Concrete using Migrating Corrosion Inhibitors, MCI 2021 & 2022",; Cortec Corporation & California State University, Northridge.