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Bibliographic Details
Main Author:	Laura Sáenz
Format:	Artículo científico
Language:	es
Published:	Universidad de Carabobo 2018
Subjects:	Ingeniería picaduras Acero inoxidable dúplex resistencia a la corrosión
Online Access:	https://www.redalyc.org/articulo.oa?id=70757669008 https://www.redalyc.org/journal/707/70757669008/ https://www.redalyc.org/journal/707/70757669008/html/ https://www.redalyc.org/journal/707/70757669008/70757669008.epub https://www.redalyc.org/journal/707/70757669008/movil
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Evaluación de la resistencia a la corrosión por picadura del acero inoxidable dúplex SAF 2304 Laura Sáenz Jesús García Omar Guzmán Ingeniería picaduras Acero inoxidable dúplex resistencia a la corrosión Se evaluó la resistencia a la corrosión por picadura de un acero inoxidable dúplex SAF 2304. Se realizaron ensayos de corrosión por picadura bajo la norma ASTM G48-03, a una temperatura de 50 °C, durante 72 horas en cloruro férrico al 6 % de concentración, y ensayos electroquímicos de polarización bajo la norma ASTM G5-87, a una temperatura de 22 °C, durante 0,5hrs en cloruro de sodio al 3,5 % de concentración. Se utilizaron 9 probetas de acero inoxidable dúplex SAF 2304, 6 para el ensayo de corrosión por picadura, y 3 para el ensayo electroquímico de polarización. Se realizó análisis por pérdida de peso, macroscopía, microscopía óptica y Microdureza Vickers. En el ensayo electroquímico el valor de la pendiente anódica resulto ser muy alto, en los ensayos de picadura donde se observó la formación de películas pasivas sobre las superficies de las muestras ensayadas, se pudo apreciar un proceso de corrosión localizada con presencia de gran cantidad de picaduras. Se observó un deterioro localizado en las intercaras fases austenita-ferrita, con presencia de picaduras. La velocidad de corrosión presentó una variación similar a la obtenida para la pérdida de peso, lo que demostró la heterogeneidad del material. 2018 artículo científico 1316-6832 https://www.redalyc.org/articulo.oa?id=70757669008 https://www.redalyc.org/journal/707/70757669008/ https://www.redalyc.org/journal/707/70757669008/html/ https://www.redalyc.org/journal/707/70757669008/70757669008.epub https://www.redalyc.org/journal/707/70757669008/movil es http://www.redalyc.org/revista.oa?id=707 Revista INGENIERÍA UC application/pdf Universidad de Carabobo Revista INGENIERÍA UC (República Bolivariana de Venezuela) Num.2 Vol.25

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