A5068996123- Corrosion Behavior and Inhibition
- Non-Destructive Testing Techniques
- Hydrogen embrittlement and corrosion behaviors in metals
- Magnesium Alloys: Properties and Applications
- Concrete Corrosion and Durability
- Extraction and Separation Processes
- Metal Extraction and Bioleaching
- Aluminum Alloys Composites Properties
- Ethics and bioethics in healthcare
- Psychology Research and Bibliometrics
- Electrochemical Analysis and Applications
- Advanced Machining and Optimization Techniques
- Social Skills and Education
- Epilepsy research and treatment
- Physics of Superconductivity and Magnetism
- Analytical chemistry methods development
- Ethics in medical practice
- Higher Education Teaching and Evaluation
- Molecular Junctions and Nanostructures
- Aluminum Alloy Microstructure Properties
- Distributed systems and fault tolerance
- Advanced battery technologies research
- Law, Ethics, and AI Impact
- Chemical and Physical Properties in Aqueous Solutions
- Anodic Oxide Films and Nanostructures
Universidad Nacional Autónoma de México
1985-2023
University of Ontario Institute of Technology
2022
Moscow Aviation Institute
2022
Center for Research and Advanced Studies of the National Polytechnic Institute
2014-2020
Catholic University of Colombia
2017
Higher Institute of Technologies and Applied Sciences
2002
The high activity of metallic magnesium and alloys limits its potential in biomedical applications; recent years, extensive efforts have been devoted to modulating this reactivity. In work, we present Mg(OH)2 TiO2 barrier coatings reduce the degradation alloy (Mg-Ca-Zn) surfaces. These were deposited by anodization method spin-coating technique, respectively. anodized layer was coated with generated from hydrolysis 3% weight TTIP (Ti[OCH(CH3)2]4, Titanium(IV) isopropoxide) 2-Propanol method....
Aluminium samples were exposed for six months to Carribean sea water. The fluctuations of the free corrosion potential values (Ecorr at o.c.p.), considered as electrochemical noise, correlated with aluminium pitting in water, influenced by different crystalline phases formed on metal surface: Al(OH)3 a product pits, and likewise crystals MgCaCO3 SiO2 proceeding from At three film bio-fouling had grown surface, two diatoms (microalgae). Ecorr fluctuation analysis was carried out using power...
This work deals with the initial localized corrosion activity of AA2024‐T3 exposed up to 24 h in diluted substitute ocean water, simulating marine environment low chloride contamination. The pits appeared since first hour at periphery CuFeMn particles and Mg‐ions release was found be 0.5 mg L −1 , originated from S‐phase (Al 2 CuMg). Fine were detached layer, composed AlCl 3 · 6H O FeCl 2H products. Localized electrochemical impedance spectroscopy (LEIS) measurements performed situ open...
The electrochemical behaviour and surface changes on AA6061-T6 alloy exposed to Caribbean seawater from the Cozumel Channel for 30 days under laminar flow (0.1 m s−1) were studied, contrasting then with stationary (no flow) conditions. Monitoring of open-circuit potential current fluctuations, both considered as noise (EN), employed two nondestructive methods. calculated corrosion current, based Rn, was one order higher in flow. fluctuations transformed frequency domain. Their power spectral...
This paper presents a theoretical and experimental evaluation of benzidine derivatives as electroactive molecules for organic redox flow batteries. These indicators are novel materials that can perform multielectron transfers in aqueous media. We performed the synthesis, electrochemical characterization, study dimer sodium 4-diphenylamine sulfonate, derivative with high water solubility properties. The Pourbaix diagram shows bielectronic process at highly acidic pH values (≤ 0.9) two...
Mapas de Espectroscopia Impedancia Electroquímica Localizada (LEIS) y Sonda Kelvin Barrido (SKP) fueron adquiridos para caracterizar las etapas iniciales corrosión localizada AA6061-T6 en agua mar sustituta diluida hasta 24 h, simulando un ambiente atmosférico poco contaminado cloruros. Ambas mediciones llevadas a cabo in situ potencial circuito abierto. Los mapas LEIS mostraron la distribución magnitud impedancia |Z| superficie aleación, sugiriendo una heterogeneidad el desarrollo sitios...
Abstract Through our waste minimization studies in the SC 33/50 Technical Assistance Program (SC TAP), we found Burrows process as modified by Myerson [1] to be attractive for South Carolina industry because of its low capital cost and simplicity. However, many thermo‐dynamic properties are not available practical application process. Therefore, objective was determine key solubility data: (1) ZnCl2 + NH4Cl H2O system (2) ZnO system. The first is important diamino zinc chloride compounds...
En el presente trabajo se ha investigado efecto de los elementos aleantes Zn (0,95% en masa) y Ca (0,15% mecanismo degradación del Mg. Las superficies Mg puro la aleación Mg-Zn-Ca han sido caracterizadas durante su exposición a solución fisiológica Hanks (a 37 °C) hasta siete días, utilizando las técnicas SEM-EDS XPS. La capa formada superficie contiene Ca10(PO4)6(OH)2, que puede mejorar compatibilidad ósea. partículas intermetálicas compuestas fase Mg2Ca, así como presencia Zn, promovido...
Este artículo presenta los resultados de una investigación que a través metodología mixta cuantitativa y cualitativa pretendió identificar las concepciones sobre bioética docentes pregrado universidad la ciudad Bogotá, problemas dilemas bioéticos por cuales eran consultados sus estudiantes estrategias enfrentamiento empleaban. Participaron 21 en parte<br />cuantitativa 10 cualitativa. Los muestran presentados con mayor frecuencia se dieron entre principios autonomía beneficencia. Por...
Aluminum alloy 6061-T6 is widely used in many fields of engineering, especially marine applications 1 . In the presence chlorides localized corrosion occurs 2 The goal this study characterize surface and its resistance laminar flow conditions (0.1 ms -1 ), during exposure Caribbean seawater Cozumel channel. As electrochemical techniques, open circuit potential (OCP) monitoring noise (EN) have been employed. OCP was correlated with changes on surface. fluctuations current, considered as EN 3...