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Listar por autor "Leiva García, Rafael"

Mostrando ítems 1-20 de 20

Characterization of thermal oxide films formed on a duplex stainless steel by means of confocal-Raman microscopy and electrochemical techniques

Sánchez Tovar, Rita; Leiva García, Rafael; García Antón, José (Elsevier, 2015-02-02)

In this work oxide films have been developed on the surface of a duplex stainless steel (UNS 1.4462) using high temperature confocal microscopy to follow their growth. The characteristics of these oxide films have been ...
Comparison of the effect of non-polluted and underwater-volcano-polluted seawater on the corrosion resistance of different stainless steels

Fernández Domene, Ramón Manuel; Sánchez Tovar, Rita; Escrivá Cerdán, Clara; Leiva García, Rafael; Garcia-Anton, Jose (Wiley, 2015-11)

This work compares the effect of non-polluted and underwater-volcano-polluted seawater on the electrochemical behavior of two different alloys, notably an austenitic stainless steel (SS) and a duplex stainless steel. ...
Confocal laser scanning microscopy for the study of the morphological changes of the postextraction sites

García Herraiz, Ariadna; Leiva García, Rafael; Cañigral-Ortíz, Aránzazu; Silvestre, Francisco Javier; Garcia-Anton, Jose (Wiley, 2012-04)

A better understanding of the remodeling process of postextraction sockets is essential in dental treatment planning. The aim of this study was to evaluate whether confocal laser scanning microscopy (CLSM) can be applied ...
Efecto de la sensibilización de un acero inoxidable dúplex sobre la corrosión en disoluciones concentradas de LiBr

Juan Barberá, Hugo (Universitat Politècnica de València, 2013-04-23)

Consulta en la Biblioteca ETSI Industriales (Riunet)
Effect of Welding on The Corrosion Behaviour of a Highly Alloyed Austenitic Stainless Steel UNS N06027 in Polluted Phosphoric Acid Media

Bakour, S.; Guenbour, A.; Bellaouchou, A.; Escrivá Cerdán, Clara; Sánchez Tovar, Rita; Leiva García, Rafael; Garcia-Anton, Jose (Electrochemical Science Group, 2012-11)

[EN] The objective of this work is to study the effect of welding on the corrosion resistance of the austenitic stainless steel Alloy 59 (UNS N06027) as well as the galvanic corrosion generated by the base/weld pair estimated ...
Effects of Hydrodynamic Conditions and LiBr Concentration on the Corrosion of Copper in LiBr Absorption Machines

Leiva García, Rafael; Muñoz-Portero, M.J.; Garcia-Anton, Jose; Sánchez Tovar, Rita (Electrochemical Science Group, 2012-02)

Refrigeration absorption machines are again considered as suitable refrigeration systems and they are replacing compression machines due to the ban of chlorofluorocarbons (CFCs) and the strict regulations of hydrochlorof ...
ESTUDIO DE LA SENSIBILIZACIÓN A LA CORROSIÓN INTERGRANULAR DE LAS ALEACIONES ALLOY 146, 279, 900 Y 926 MEDIANTE ENSAYOS ELECTROQUÍMICOS Y ANÁLISIS DE LA IMAGEN

Leiva García, Rafael (Universitat Politècnica de València, 2011-10-24)

En este trabajo se ha investigado la sensibilización a la corrosión intergranular de cuatro aleaciones tratadas térmicamente en el rango de temperaturas de 600 a 825 ºC y el rango de tiempo de 1 a 2 horas. El grado de ...
Evaluación de las actividades realizadas mediante la metodología de Aprendizaje Basado en Problemas

Fernández-Domene, Ramón M.; Sánchez-Tovar, Rita; Roselló-Márquez, Gemma; Batista-Grau, Patricia; Leiva García, Rafael; García-Antón, José (Editorial Universitat Politècnica de València, 2021-02-08)

[ES] La metodología de Aprendizaje Basado en Problemas (ABP) requiere un enfoque de evaluación en el que se evalúen una serie de competencias específicas y transversales. Esta evaluación debe de tener un carácter formativo ...
Improvement of the electrochemical behaviour of Zn-electroplated steel using regenerated Cr(III) passivation baths

García Antón, José; Fernández Domene, Ramón Manuel; Sánchez Tovar, Rita; Escrivá Cerdán, Clara; Leiva García, Rafael; García, Verónica; Urtiaga, Ane (Elsevier, 2014-05-24)

[EN] Conversion coatings based on trivalent chromium are more sensitive to the presence of zinc and iron impurities than the chromate formulations. This fact contributes to a decrease in the quality of passivation and to ...
In-Situ Study of Corrosion Evolution of Alloy 926 (UNS N08926) in its Unsensitised and Sensitised State in LiBr Solutions Using Confocal Laser Scanning Microscopy

Leiva García, Rafael; Muñoz Portero, María José; García Antón, José (Electrochemical Society, 2012)

The aim of this work is to study the corrosion evolution of a unsensitised and sensitised stainless steel in a 992 g/l LiBr solution. The tested material has been a highly alloyed austenitic stainless steel (UNS N08926) ...
In-Situ Study of Single and Double Loop Reactivation Methods During the Characterisation of the Degree of Sensitisation of a Duplex Stainless Steel (UNS 1.4462) Using a Minicell and a Confocal Microscope

Leiva García, Rafael; Muñoz-Portero, M.J.; Garcia-Anton, Jose (2011-03)

[EN] The aim of this work is to study the evolution of the electrode surface during the single and double reactivation methods at microscopic scale. The tested material has been a duplex stainless steel (UNS 1.4462) in its ...
Influence of sensitisation on the corrosion behaviour of Alloy 926 (UNS N08926) in concentrated aqueous lithium bromide solutions at different temperatures

Leiva García, Rafael; Muñoz-Portero, M.J.; Garcia-Anton, Jose (2011-02)

[EN] The aim of this work is to study the influence of sensitisation to intergranular corrosion on a highly alloyed austenitic stainless steel, Alloy 926 (UNS N08926). Some specimens of this steel have been heated in an ...
Influencia de las condiciones hidrodinámicas sobre la corrosión del cobre en máquinas de absorción de LiBr

Leiva García, Rafael (Universitat Politècnica de València, 2014-05-07)

Consulta en la Biblioteca ETSI Industriales (5564)
Influencia del inhibidor molibdato de litio en la resistencia a la corrosión de un acero inoxidable dúplex en máquina de absorción de Libr

Rubio Cervera, Jorge (Universitat Politècnica de València, 2013-04-29)

Consulta en la Biblioteca ETSI Industriales (9239)
Investigación en el aula: evaluación de la metodología de aprendizaje basado en problemas en la asignatura de Corrosión

Sánchez-Tovar, Rita; Fernández-Domene, Ramón M.; Batista-Grau, Patricia; Roselló-Márquez, Gemma; Leiva García, Rafael; García-Antón, José (Editorial Universitat Politècnica de València, 2021-06-04)

[ES] La metodología de Aprendizaje Basado en Problemas (ABP) se introdujo por primera vez en un curso de Corrosión del Master de Ingeniería Química de la Universitat Politècnica de València, durante el curso 2018-2019. Se ...
Post-extraction mesio-distal gap reduction assessment by confocal laser scanning microscopy - a clinical 3-month follow-up study

García-Herraiz, Ariadna; Silvestre, Francisco Javier; Leiva García, Rafael; Crespo Abril, Fortunato; Garcia-Anton, Jose (Blackwell Publishing, 2017-05)

[EN] AimThe aim of this 3-month follow-up study is to quantify the reduction in the mesio-distal gap dimension (MDGD) that occurs after tooth extraction through image analysis of three-dimensional images obtained with the ...
Pourbaix diagrams for titanium in concentrated aqueous lithium bromide solutions at 25 ºC

Muñoz Portero, María José; García Antón, José; Guiñón Segura, José Luís; Leiva García, Rafael (Elsevier, 2011-04)

Pourbaix diagrams (electrode potential-pH diagrams) for Ti–Br−–H2O system at 25 °C in the absence and presence of titanium hydrides were developed in 400, 700, 850, and 992 g/L LiBr solutions. The diagrams were compared ...
Study of passive films formed on AISI 316L stainless steel in non-polluted and underwater-volcano-seawater

Fernández Domene, Ramón Manuel; Sánchez Tovar, Rita; Escrivá Cerdán, Clara; Leiva García, Rafael; Garcia-Anton, Jose (NACE international, 2014-04)

This work studies the semiconducting behavior of passive films formed on AISI 316L (UNS S31603) in two different seawater solutions, non-polluted and polluted, collected from the volcano of El Hierro Island. Polarization ...
Study of the sensitisation of a highly alloyed austenitic stainless steel, Alloy 926 (UNS N08926), by means of scanning electrochemical microscopy

Leiva García, Rafael; Akid, R.; Greenfield, D.; Gittens, J.; Muñoz Portero, María José; García Antón, José (Elsevier, 2012-05-30)

The feedback mode of a scanning electrochemical microscope (SECM) was applied to study differences in the reactivity of a highly alloyed austenitic stainless steel, Alloy 926 (UNS N08926), in its unsensitised and sensitised ...
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 ...