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Jaén, Juan A.; Villaláz, Mariela; Araque, Lilibeth de; Bósquez, Agnes

doi:10.1023/a:1012606928682

Cited by 11 publications

(1 citation statement)

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“…The main corrosion products reported in the literature are hydrated iron (III) oxyhydroxides of crystalline and sometimes amorphous nature, which are formed on the steel surface and are called: lepidocrocite (γ -FeOOH) and goethite (α-FeOOH). [3] Figure 1, shows the micrographs results of the chemical cleaning plate exposed to atmospheric corrosion for 90 days, the crystalline phases of polymorphs of ferric oxyhydroxides goethite (α-FeOOH) and lepidocrocite (γ-FeOOH) can be observed. The lepidocrocite is characterized by thin and porous plates, while the goethite has sandy cotton balls causing these porosities to help capture contaminants.…”

Section: Sem Images Of Plates With Corrosion Productsmentioning

confidence: 99%

Electrochemical Analysis of a Rust Converter Applied on Materials of Historical Interest

et al. 2019

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The use of chemical formulations as oxide converters has been a protection, however, these formulations cause contamination, the use of converters based on plant extracts is an alternative. In the present investigation, an extract of Mimosa Tenuiflora, was developed as a protection alternative, which was applied as a rust converter in 1018 steel plates with corrosion products as an alternative for the conservation of ferrous alloys. Linear Polarization Resistance (LPR) and Electrochemical Impedance Spectroscopy (EIS) were the electrochemical techniques used and morphological characterization were made by Scanning Electron Microscopy (SEM/EDS) and X Ray Diffraction (XRD). Oxides formed in shorter exposure time react better than oxides formed in longer exposure time, due to the results of superficial characterization and literature, the lepidocrocite works better with a rust converter. Whereas the goethite takes longer to react, the kinetics of the system corrosion process is dominated by a Warburg type diffusion process, this is concluded by EIS.

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Section: Sem Images Of Plates With Corrosion Productsmentioning

confidence: 99%