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Browsing by Subject "EIS"

Now showing items 1-20 of 22

Correlations between acoustic and electrochemical measurements for metallic corrosion on steel strings used in guitars

López Muelas, José Luis; Bonastre Cano, José Antonio; Segura Alcaraz, Jorge Gabriel; Gadea Borrell, José Mª; Juliá Sanchis, Ernesto; Cases Iborra, Francisco Javier (Elsevier, 2015-11)

The corrosion state of steel guitar strings and their morphology were evaluated according to exposure time to artificial human sweat solution. The instantaneous corrosion rate was evaluated using polarization resistance. ...
Corrosion behaviour of Ti6Al4V ELI nanotubes for biomedical applications

Lario, Joan; Viera, Mauricio; Vicente-Escuder, Ángel; Igual Muñoz, Anna Neus; Amigó, Vicente (Elsevier, 2019-12)

[EN] Surfaces engineering on titanium biomedical alloys aiming for improving bone regeneration, healing periods and increasing lifetime needs fora fundamental understanding of the electrochemical reactions occurring at the ...
Effect of physico-chemical properties of simulated body fluids on the electrochemical behaviour of CoCrMo alloy

Valero Vidal, Carlos; Igual Muñoz, Anna Neus (Elsevier, 2011-10)

The behaviour of the CoCrMo alloy was studied under different experimental conditions of solution pH, chemical composition (phosphate buffer solution with and without addition of bovine serum albumin) and aeration (presence ...
Effect of potential formation on the electrochemical behaviour of a highly-alloyed austenitic stainless steel in contaminated phosphoric acid at different temperatures

Escrivá Cerdán, Clara; Blasco Tamarit, María Encarnación; García García, Dionisio Miguel; García Antón, José; Guenbour, A. (Elsevier, 2012-10-01)

The electrochemical behaviour of the highly alloyed austenitic stainless steel UNS N08031 (Alloy 31) in a contaminated phosphoric acid solution is studied using potentiodynamic curves, EIS and Mott–Shottky. The relative ...
Effect of temperature on passive film formation of UNS N08031 Cr-Ni alloy in phosphoric acid contaminated with different aggressive anions

Escrivá Cerdán, Clara; Blasco Tamarit, María Encarnación; García García, Dionisio Miguel; García Antón, José; Akid, R.; Walton, J. (Elsevier, 2013-11-30)

tThe influence of temperature and the effect of aggressive anions on the electrochemical behaviour of UNSN08031 stainless steel in a contaminated phosphoric acid solution were evaluated. Stabilisation of thepassive film ...
EIS Behavior of Polyethylene plus Graphite Composite Considered as an Approximation to an Ensemble of Microelectrodes

Navarro-Laboulais, J.; García-Jareño, José Juan; Agrisuelas, Jerónimo; Vicente, Francisco (MDPI, 2024-09)

[EN] The electrical percolation of alternating current through two-phase polyethylene/graphite composite electrodes with different contents of graphite microparticles immersed in aqueous KCl solutions has been studied. ...
Electrochemical characterization of a NiCo/Zn cathode for hydrogen generation

Herraiz-Cardona, Isaac; Ortega Navarro, Emma María; Vázquez-Gómez, Lourdes; Pérez-Herranz, Valentín (PERGAMON-ELSEVIER SCIENCE LTD, 2011-09)

[EN] Hydrogen is considered to be the most promising candidate as a future energy carrier. One of the most used technologies for the electrolytic hydrogen production is alkaline water electrolysis. However, due to the high ...
Electrochemical corrosion behavior of Ti-35Nb-7Zr-5Ta powder metallurgic alloys after Hot Isostatic Process in fluorinated artificial saliva

Lario, Joan; Vicente-Escuder, Ángel; Segovia-López, Francisco; Amigó, Vicente (Elsevier, 2022-02)

[EN] The present study aimed to evaluate the effect of the Hot Isostatic Process (HIP) process on the microstructure, phase stability and corrosion resistance of Ti35Nb7Zr5Ta powder metallurgy alloys. The corrosion resistance ...
Experimental and computational aspects of green corrosion inhibition for low carbon steel in HCl environment using extract of Chamaerops humilis fruit waste

Eddahhaoui, Fatima-Zahra; Najem, Ayoub; Elhawary, Maha; Boudalia, Maria; Campos, Othon S.; Tabyaoui, Mohamed; Garcia-Anton, Jose; Bellaouchou, Abdelkbir; Amin, Hatem M. A. (Elsevier, 2024-03-15)

[EN] The inhibition effect of a methanolic extract of Chamaerops humilis (CHFE) on the corrosion of low-carbon steel in 1 M HCl solution was evaluated by weight loss, potentiodynamic polarization and electrochemical impedance ...
Influence of carbides and microstructure of CoCrMo alloys on their metallic dissolution resistance

Valero Vidal, Carlos; Casaban Julián, Leandro; Herraiz Cardona, Isaac; Igual Muñoz, Anna Neus (Elsevier, 2013-12-01)

CoCrMo alloys are passive and biocompatible materials widely used as joint replacements due to their good mechanical properties and corrosion resistance. Electrochemical behaviour of thermal treated CoCrMo alloys with ...
Influence of pH on the electrochemical behaviour of a duplex stainless steel in highly concentrated LiBr solutions

Guiñón Pina, Virginia; Igual Muñoz, Anna Neus; García Antón, José (Elsevier, 2011-02)

[EN] The objective is to study the influence of pH on the corrosion and passive behaviour of duplex stainless steels (DSS) using potentiodynamic measurements, potentiostatic tests and electrochemical impedance spectroscopy ...
Modification of porous nickel electrodes with silver nanoparticles for hydrogen production

Pérez-Herranz, Valentín; Medina, R.; Taymans, P.; González-Buch, C.; Ortega Navarro, Emma María; Sánchez-Loredo, G.; Labrada-Delgado, G.J. (Elsevier, 2018-01)

[EN] Silver nanoparticles were electrodeposited into the surface of a macroporous Ni electrode. The developed electrodes were characterized morphologically by confocal laser scanning microscopy and field emission scanning ...
Modification of the magnesium corrosion rate in physiological saline 0.9 wt % NaCl via chemical and electrochemical coating of reduced graphene oxide

Fernández Sáez, Javier; El Ouardi, Y.; Bonastre Cano, José Antonio; Molina, J. M.; Cases, Francisco (Elsevier, 2019)

[EN] The synthesis of reduced graphene oxide onto magnesium discs by electrochemical and chemical methods is presented in this work. The surface morphology and atomic composition were investigated using field emission ...
Passive and transpassive behaviour of Alloy 31 in a heavy brine LiBr solution

Fernández Domene, Ramón Manuel; Blasco Tamarit, María Encarnación; García García, Dionisio Miguel; García Antón, José (Elsevier, 2013-04-15)

The passive and transpassive behaviour of Alloy 31, a highly alloyed austenitic stainless steel (UNS N08031), has been investigated in a LiBr heavy brine solution (400 g/l) at 25 °C using potentiostatic polarisation combined ...
Sensor para análisis de alimentos aplicando espectroscopía de impedancia y redes neuronales artificiales

Gessler, Josef Peter (Universitat Politècnica de València, 2021-10-11)

[ES] El objetivo de esta tesis fue el diseño de un equipo portátil para la medición de concentración de sal en soluciones salinas aplicando la espectroscopía de impedancia eléctrica (EIS) y redes neuronales artificiales ...
Structural and Electrochemical Analysis of CIGS: Cr Crystalline Nanopowders and Thin Films Deposited onto ITO Substrates

Saber, Suzan; Marí, Bernabé; Andrio, Andreu; Escorihuela, Jorge; Khattab, Nagwa; Eid, Ali; El Nahrawy, Amany; Abo Ali, Mohamed; Compañ Moreno, Vicente (MDPI AG, 2021-05)

[EN] A new approach for the synthesis of nanopowders and thin films of CuInGaSe2(CIGS)chalcopyrite material doped with different amounts of Cr is presented. The chalcopyrite mate rial CuInxGa1 ¿ xSe2 was doped using Cr to ...
Study of the electrical properties of novel hybrid organic-inorganic conducting textiles of polypyrrole-phosphotungstate-polyester using electrochemical impedance spectroscopy

Bonastre Cano, José Antonio; Molina Puerto, Javier; Del Río García, Ana Isabel; Galván, J. C.; Cases Iborra, Francisco Javier (Elsevier, 2011-09)

The electrical properties of novel hybrid organic-inorganic conducting fabrics of polyester (PES) coated with polypyrrole-PW12O 403- (PPy-POM) have been tested for dry samples and specimens immersed in different pH solutions ...
Study of the sensitisation process of a duplex stainless steel (UNS 1.4462) by means of confocal microscopy and localised electrochemical techniques

Leiva García, Rafael; Fernandes, Joao Salvador; Muñoz-Portero, María-José; Garcia-Anton, Jose (Elsevier, 2015-05)

When duplex stainless steels are heated, they can become sensitised and intermetallic phases can appear. In this work, samples of duplex stainless steel, UNS 1.4462, have been heated (850 degrees C for 1 and 2 h) in a ...
Synthesis and characterization of Au-modified macroporous Ni electrocatalysts for alkaline water electrolysis

González Buch, Cristina; Herraiz Cardona, Isaac; Ortega Navarro, Emma María; Mestre, Sergio; Pérez Herranz, Valentín (Elsevier, 2016-01-12)

Au nanoparticles (Au-NPs) were successfully synthesized and incorporated into the surface of a macroporous Ni electrode fabricated via galvanostatic electrodeposition at high current densities in order to produce hydrogen ...
The Structural and Electrochemical Properties of CuCoO2 Crystalline Nanopowders and Thin Films: Conductivity Experimental Analysis and Insights from Density Functional Theory Calculations

Chfii, Hasnae; Bouich, Amal; Andrio, Andreu; Cerutti Torres, Joeluis; Marí, B.; Palacios, Pablo; Abd Lefdil, Mohammed; Compañ Moreno, Vicente (MDPI AG, 2023-08)

[EN] A novel manufacturing process is presented for producing nanopowders and thin films of CuCoO2 (CCO) material. This process utilizes three cost-effective synthesis methods: hydrothermal, sol-gel, and solid-state ...