Structure and characterization of hot dip galvanized coatings in acidic medium in low carbon steel.
In the present work, the structural and microstructural characterization and mechanical properties analysis of hot-dip galvanized coatings on steel sheets was carried out, sometimes at different temperatures of a liquid Zn bath and different immersion times, with the intention to determine the ideal...
| Autores: | , , , , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2020 |
| País: | México |
| Institución: | UNIVERSIDAD AUTÓNOMA DEL ESTADO DE HIDALGO |
| Repositorio: | PÄDI Boletín Científico de Ciencias Básicas e Ingeniería del ICBI |
| Idioma: | español |
| OAI Identifier: | oai:repository.uaeh.edu.mx:article/5701 |
| Acceso en línea: | https://repository.uaeh.edu.mx/revistas/index.php/icbi/article/view/5701 |
| Access Level: | acceso abierto |
| Palabra clave: | GALVANIZED HOT DIP CRYSTAL STRUCTURE DRX MEB GALVANIZADO INMERSION EN CALIENTE ESTRUCTURA CRISTALINA |
| Sumario: | In the present work, the structural and microstructural characterization and mechanical properties analysis of hot-dip galvanized coatings on steel sheets was carried out, sometimes at different temperatures of a liquid Zn bath and different immersion times, with the intention to determine the ideal conditions of adherence and mechanical properties. Cleaning of the low-content steel sheets was carried out using a 1 M concentration of HCL. Likewise, an instrumental analysis was performed by X-ray diffraction (XRD), Zn was identified with PDF [96-230-0115] BCC with 4.51% crystallinity and 1Å of crystallite size, and PDF [96-901- 0309] FCC with 21.21% crystallinity and 2Å; Jarosite was identified which shows that an immersion in an acid medium causes a hydrolysis of iron and extraction of phosphorus and sulfur from the steel matrix. Furthermore, by scanning electron microscopy (MEB-EDS), the size of the coating layers of the compounds formed on these layers was determined. From what is concluded, that the cleaning with HCL after sandblast cleaning and a hot dip galvanizing temperature of 473 ° C, one minute of heating the sheet before immersion and two minutes of immersion in the liquid bath Zn are the best conditions for a good adhesion of coating on a steel coating. |
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