2019
DOI: 10.3989/revmetalm.155
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Efecto de las nanopartículas de ZrO<sub>2</sub> y L-Cys como agentes dopantes de recubrimientos sol-gel de sílice mesoporosa para la protección anticorrosiva de la aleación de magnesio AZ61

Abstract: Sobre la superficie de la aleación de magnesio AZ61 se aplicaron recubrimientos de sol-gel basados en el precursor GPTMS-TMOS, incluyendo como agentes dopantes L-Cysteína y ZrO2 en diferentes concentraciones. Su resistencia a la corrosión se estudió en solución de 0,6M NaCl, por inmersión hasta 14 días. Los patrones de DRX revelaron que el principal producto de corrosión en las superficies recubiertas es Mg(OH)2, mientras que en la de AZ61 no tratada adicionalmente se formaron varios compuestos de Zn con cloro… Show more

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“…In the case of seawater, volatile corrosion inhibitors that trap molecules or ions in the medium to prevent their contact with the metal substrate are of interest. Examples of these organic inhibitors that can also be found in the literature are turmeric, L-cysteine or methylene blue, among others [ 36 , 37 , 38 ]. Some of the organic corrosion inhibitors can, in some cases, offer a double functionality: an efficient response to corrosion phenomena, thanks to the free radicals in their structure, such as turmeric, dimethyl yellow, chlorophenol red or crystal violet with antioxidant power, and the visual perception of pH changes that can identify corrosion processes as they occur, acting as optical sensors.…”
Section: Introductionmentioning
confidence: 99%
“…In the case of seawater, volatile corrosion inhibitors that trap molecules or ions in the medium to prevent their contact with the metal substrate are of interest. Examples of these organic inhibitors that can also be found in the literature are turmeric, L-cysteine or methylene blue, among others [ 36 , 37 , 38 ]. Some of the organic corrosion inhibitors can, in some cases, offer a double functionality: an efficient response to corrosion phenomena, thanks to the free radicals in their structure, such as turmeric, dimethyl yellow, chlorophenol red or crystal violet with antioxidant power, and the visual perception of pH changes that can identify corrosion processes as they occur, acting as optical sensors.…”
Section: Introductionmentioning
confidence: 99%