A long-lasting passive film formed by dynamic oxygen transport at the interface between coating and substrate
Source abstract
Abstract
Ce doped α-Fe 2O 3 nanorods with rich oxygen vacancies (CeFeO x ) were prepared using low-temperature oxalate precipitation method and added to epoxy resin as active anti-corrosion filler. In an oxygen rich high-temperature and high-pressure environment (HPHT-O 2), the impedance modulus of coatings containing CeFeO x fillers is still close to 10 10 Ω·cm 2, which is more than 10 4 times that of pure epoxy coatings. It is attributed to the preferential permeability of CeFeO x fillers to O 2, which promotes the formation of a dense passive film on the substrate surface, further hinder corrosion, and ensure that the coating does not peel off from the substrate surface.
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Research context
OpenAlex topics: Fuel Cells and Related Materials · Analytical Chemistry and Sensors · Electronic and Structural Properties of Oxides
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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