RELATIONSHIP ANALYSIS BETWEEN TWO DIFFERENT METHODS OF SURFACE FRACTAL DIMENSION IN METAL–CERAMIC COATINGS SPUTTERED BY RF-MAGNETRON

A. Gonzã Lez-Hernã Ndez, E. J. Suã Rez-Domã Nguez (), W. Aperador (), A. B. Morales-Cepeda (), E. F. Izquierdo-Kulich () and J. C. Caicedo ()
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A. Gonzã Lez-Hernã Ndez: Faculty of Engineering, Universidad Autónoma de Tamaulipas, Centro Universitario Tampico-Madero Zona sur, Tampico 89109, Tamaulipas, México
E. J. Suã Rez-Domã Nguez: ��Centro de Investigación FADU, Universidad Autónoma de Tamaulipas, Circuito Universitario S/N, Centro Universitario Sur, 89000, Tampico, Tamaulipas, México
W. Aperador: ��Faculty of Engineering, Universidad Militar Nueva Granada, Bogotá 111111, Colombia
A. B. Morales-Cepeda: �Tecnológico Nacional de México/Instituto Tecnológico de Ciudad Madero, Parque Tecnia (Pequeña y Mediana Industria) Bahia Aldahir, Altamira, Tamaulipas, México
E. F. Izquierdo-Kulich: �Departamento de Química-Física. FQ- Universidad de la Habana, Calzada de Zapata entre Mazón y G, El Vedado, Plaza, Ciudad de La Habana, 10400, Cuba
J. C. Caicedo: ��Tribology, Polymers, Power Metallurgy and Processing of Recycled Solids Research Group, Universidad del Valle, Cali 76001, Colombia

International Journal of Innovation and Technology Management (IJITM), 2022, vol. 29, issue 07, 1-15

Abstract: Existing topographical microstructure analyses obtain information based on surface properties of the analyzed material, such as scanning electron microscopy (SEM) and atomic force microscopy (AFM). However, these methods cannot provide quantitative topographical data, such as fractal analysis. In this paper, we present the relationship between two different methods in the obtaining the fractal dimension using electrochemical impedance spectroscopy (EIS) and AFM image analysis based on statistics and behavior of roughness and porosity properties of four other coating systems obtained by RF-magnetron sputtering. Our results demonstrated that the n=40 bilayer system is the best since it presented a lower porosity–roughness percentage and means. At least one of the fractal dimension values has a nonnormal distribution. However, the hypothesis testing showed no significant difference between the medians of both method’s fractal dimension values. The correlation coefficient showed a strong relationship between the roughness and porosity properties with a typical regular distribution pattern. According to the statistical data results, researchers can use both the methods due to their outstanding data precision.

Keywords: Sputtered coating; fractal dimension; porosity; roughness; nonparametric statistic (search for similar items in EconPapers)
Date: 2022
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DOI: 10.1142/S0218625X22500858

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