Publication:
Comportamiento de Corrosión-Erosión en Recubrimientos de TiN/ZrN Depositados sobre Acero AISI 4140

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Authors

Authors

Mejía, Aura S.
Caicedo, Julio
Aperador, Willian
Abstract (Spanish)
Se depositaron películas delgadas de nitruro de titanio/nitruro de zirconio sobre acero AISI 4140 mediante un sistema multi-blanco magnetrón pulverización (sputtering) con radiofrecuencia. El proceso se desarrolló bajo el sistema de rotación del sustrato que permitió situar el sustrato de frente a los blancos de titanio y zirconio, generando la super-red con periodos de 1, 50, 100 y 200 bicapas. Las multicapas fueron evaluadas frente a la sinergia corrosión-erosión en una solución compuesta por NaCl al 3% y sílice. La caracterización electroquímica se realizó mediante la técnica de espectroscopía de impedancia electroquímica. La superficie fue evaluada posterior al ensayo mecánico y electroquímico mediante la técnica de microscopia electrónica de barrido. Por medio del análisis de desempeño se observó que el material con mayor efecto sinérgico fue el sustrato. También se muestra que al aumentar las bicapas en el sistema nitruro de titanio/nitruro de zirconio el fenómeno corrosivo controla el deterioro del material.
Abstract (English)
Thin films of titanium nitride/zirconium nitride were deposited on AISI 4140 steel using a multi-target magnetron sputtering system with radio frequency. The process was developed under the substrate rotation system that allowed the substrate to be placed in front of the titanium targets and zirconium, generating the super-lattice with periods of 1, 50, 100 and 200 bilayers. The multilayers were evaluated against the corrosion-erosion synergy in a solution composed of 3% NaCl and silica. The Electrochemical characterization was carried out using the impedance spectroscopy technique. electrochemistry. The surface was evaluated after the mechanical and electrochemical test by means of scanning electron microscopy technique. Through the performance analysis it was observed that the The material with the greatest synergistic effect was the substrate. It is also shown that by increasing the bilayers in the titanium nitride/zirconium nitride system the corrosive phenomenon controls the deterioration of the material.
Extent
10 páginas
URI: https://repositorio.escuelaing.edu.co/handle/001/3307
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AK - Diseño Sostenible en Ingeniería Mecánica – DSIM
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