dc.contributor | Grupo de Investigación Ecitrónica | |
dc.creator | Correa, Faber | |
dc.creator | Aperador Chaparro, William Arnulfo | |
dc.creator | Zambrano, Gustavo | |
dc.creator | Rincón, Carlos | |
dc.creator | Caicedo, Julio Cesar | |
dc.date.accessioned | 2023-05-23T19:55:44Z | |
dc.date.accessioned | 2023-09-06T21:17:49Z | |
dc.date.available | 2023-05-23T19:55:44Z | |
dc.date.available | 2023-09-06T21:17:49Z | |
dc.date.created | 2023-05-23T19:55:44Z | |
dc.date.issued | 2008 | |
dc.identifier | 0120-6230 | |
dc.identifier | https://repositorio.escuelaing.edu.co/handle/001/2357 | |
dc.identifier | https://doi.org/10.17533/udea.redin.17919 | |
dc.identifier | 2422-2844 | |
dc.identifier | https://revistas.udea.edu.co/index.php/ingenieria/article/view/17919 | |
dc.identifier.uri | https://repositorioslatinoamericanos.uchile.cl/handle/2250/8707392 | |
dc.description.abstract | El acero 4140 se utiliza ampliamente en la fabricación de partes de máquinas con durezas entre 25-35 Rockwell C. Sin embargo, su vida útil se ve limitada por su baja resistencia al desgaste y a la corrosión. Con el fin de mejorar su comportamiento frente a la corrosión se depositaron multicapas de Titanio/Nitruro de Titanio (Ti/TiN) sobre substratos de acero 4140 mediante un sistema multi-blanco d.c. magnetrón sputtering a partir de un blanco de Ti de alta pureza (99,99%) en una atmósfera de Ar/N2. Con el objeto de estudiar el efecto del número de capas sobre la velocidad de corrosión de las películas depositadas, se crecieron multicapas con 1, 5, 10, 15, y 20 bicapas de [Ti/TiN], manteniendo un espesor total constante de 3 µm en todas ellas. Las fases existentes y composición química de los recubrimientos fueron analizados mediante espectroscopía de difracción de rayos X (XRD) y espectroscopía de energía dispersiva de rayos X (EDX) respectivamente. Las muestras de acero sin y con recubrimiento se caracterizaron además por Espectroscopía de
Impedancia Electroquímica (EIS) y curvas de polarización Tafel. Se encontró que la velocidad de corrosión tuvo una disminución alrededor del 87% en el acero recubierto con 20 bicapas de Ti/TiN en comparación al acero sin recubrir y del 25% respecto a la muestra recubierta con 1 bicapa, lo cual evidencia el efecto positivo del incremento del período en las películas delgadas basadas en multicapas de Ti/TiN. | |
dc.description.abstract | Steel 4140 is widely used for fabrication of machines components with hardness between 25 and 35 Rockwell C (HRC). However, life time of this steel is limited by its low wear and corrosion resistance. In order to enhance its corrosion behavior, multilayer of Ti/TiN were deposited onto 4140 steel samples by d.c. reactive magnetron sputtering using a high purity titanium
target (99.9) in an Ar/N2 atmosphere. With the purpose to study the influence of the layer number on the rate of corrosion of deposited films, multilayer of [Ti /TiN] were growth with 1, 5, 10, 15 and 20 bilayers and a 3 µm constant thickness for all samples. The grown phases and chemical composition were analyzed by x-ray diffraction spectroscopy (XRD), and energy dispersive X-ray spectroscopy (EDX) respectively. Additionally, the uncoated and
coated steel samples were characterized using electrochemical impedance spectroscopy (EIS) and Tafel’s polarisation curves. A corrosion rate reduction of approximately 87% was found for the steel sample coated with 20 bilayers of Ti/TiN compared with the uncoated, and of 25% related to the sample coated with 1 bilayer. This evidences the positive effect of the period increase of the multilayered Ti/TiN thin films on their corrosion resistance. | |
dc.language | spa | |
dc.publisher | Universidad de Antioquia | |
dc.publisher | Colombia | |
dc.relation | 14 | |
dc.relation | 46 | |
dc.relation | 7 | |
dc.relation | N/A | |
dc.relation | Revista Facultad de Ingeniería | |
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dc.rights | https://creativecommons.org/licenses/by-nc-nd/4.0/ | |
dc.rights | info:eu-repo/semantics/openAccess | |
dc.rights | Atribución-NoComercial-SinDerivadas 4.0 Internacional (CC BY-NC-ND 4.0) | |
dc.source | https://revistas.udea.edu.co/index.php/ingenieria/article/view/17919 | |
dc.title | Mejoramiento de la resistencia a la corrosión del acero AISI 4140 utilizando multicapas de titanio/ nitruro de titanio | |
dc.type | Artículo de revista | |