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Browsing by Author "Borrell Tomás, María Amparo"

Now showing items 1-20 of 75

ADVANCED CERAMIC MATERIALS FOR DENTAL APPLICATIONS SINTERED BY MICROWAVE HEATING

Presenda Barrera, Álvaro (2016-09-01)

[EN] Zirconia has become a widely utilized structural ceramic material with important applications in dentistry due to its superb mechanical properties, biocompatibility, aesthetic characteristics and durability. Zirconia ...
Al2O3-3YTZP-Graphene multilayers produced by tape casting and spark plasma sintering

Rincón, Acacio; Moreno, Rodrigo; Chinelatto, Adriana S. A.; Gutierrez-Gonzalez, Carlos F.; Rayón Encinas, Emilio; Salvador Moya, Mª Dolores; Borrell Tomás, María Amparo (Elsevier, 2014-09)

This work aims to establish a colloidal route to obtain laminates of alumina zirconia combining layers with and without graphene. Green tapes of alumina, alumina with 5 vol.% of 3Y-TZP and alumina with 5 vol.% of 3Y-TZP ...
Alumina reinforced eucryptite ceramics: Very low thermal expansion material with improved mechanical properties

García-Moreno, Olga; Borrell Tomás, María Amparo; Bittmann, Birgit; Fernández-Valdés, Adolfo; Torrecillas San Millán, Ramón (Elsevier, 2011-08)

[EN] Composite materials formed by a LAS matrix reinforced with second phases are promising materials in many applications where better mechanical properties than those corresponding to conventional low thermal expansion ...
Alumina-carbon nanofibers nanocomposites obtained by spark plasma sintering for proton exchange membrane fuel cell bipolar plates

Borrell Tomás, María Amparo; Torrecillas, Ramón; Rocha, Victoria G.; Fernández, Adolfo (Wiley-VCH Verlag, 2012-08)

[EN] There is an increasing demand of multifunctional materials for a wide variety of technological developments. Bipolar plates for proton exchange membrane fuel cells are an example of complex functionality components ...
Alumina-zirconia coatings obtained by suspension plasma spraying from highly concentrated aqueous suspensions

Carpio-Cobo, Pablo; Salvador Moya, Mª Dolores; Borrell Tomás, María Amparo; Sanchez Vilches, Enrique; Moreno, Rodrigo (Elsevier, 2016)

[EN] Suspension plasma spraying (SPS) deposition represents an innovative technique to produce coatings that exhib- it improved properties. However, the key to obtain coatings with superior functional properties relies on ...
Bulk TiCxN1-x-15%Co cermets obtained by direct spark plasma sintering of mechanochemical synthesized powders

Borrell Tomás, María Amparo; Salvador Moya, Mª Dolores; Rocha, Victoria G.; Fernandez, Adolfo; Angel Aviles, Miguel; Gotor, Francisco J. (Elsevier, 2012-12)

TiCxN1-x-15 wt.%Co cermets were obtained by a mechanically induced self-sustaining reaction (MSR) and sintered by spark plasma sintering (SPS) technique at different temperatures (1200-1400 degrees C) for 1 min in vacuum ...
Carbon nanofiber- and alumina-reinforced lithium aluminosilicate for controlled thermal expansion materials

Borrell Tomás, María Amparo; Garcia-Moreno, Olga; Torrecillas, Ramón; Garcia-Rocha, Victoria; Fernandez, Adolfo (National Institute for Materials Science, 2012)

[EN] Materials with a very low or tailored thermal expansion have many applications ranging from cookware to the aerospace industry. Among others, lithium aluminosilicates (LAS) are the most studied family with low and ...
Colloidal processing of fully stabilized zirconia laminates comprising graphene oxide-enriched layers

Rincón, Acacio; Moreno, Rodrigo; Gutierrez González, Fidel Carlos; Sainz, Raquel; Salvador Moya, Mª Dolores; Borrell Tomás, María Amparo (Elsevier, 2016-06)

Multilayer materials have demonstrated to provide an efficient mechanism for toughening by deflection of a propagating crack by weak interlayers. Therefore, the aim of this work is to study the colloidal processing of 8 ...
Comparison in mechanical properties of zirconium titanate (ZrTiO4) synthetized by alternative routes and sintered by microwave (MW)

Guillén Pineda, René Miguel; Borrell Tomás, María Amparo; Salvador Moya, Mª Dolores; Peñaranda Foix, Felipe Laureano; Moreno, R. (Editorial Universitat Politècnica de València, 2019-10-15)

[EN] At present, ZrTiO4 nanopowders are used as a dielectric in the electroceramic field, applications of catalysis, microwave telecommunications devices, pigments, composites, etc. One of the most interesting applications ...
Comportamiento a fatiga térmica de la capa de anclaje de nuevas barreras térmicas cerámicas obtenidas mediante proyección por plasma atmosférico

Carpio-Cobo, Pablo; Salvador Moya, Mª Dolores; Borrell Tomás, María Amparo; Sánchez Vilches, Enrique (Universidad Pedagogica y Tecnologica de Colombia, 2016-05)

[PT] O desenvolvimento de novos materiais cerâmicos para aplicá-los em recobrimentos protetores frente à temperatura, também conhecidos como barreiras térmicas (Thermal Barrier Coatings o TBC), é de grande interesse para ...
Correlation of thermal conductivity of suspension plasma sprayed yttria stabilized zirconia coatings with some microstructural effects

Carpio, Pablo; Blochet, Quentin; Pateyron, Bernard; Pawlowski, Lech; Salvador Moya, Mª Dolores; Borrell Tomás, María Amparo; Sanchez, Enrique (Elsevier, 2013-09-15)

Yttria-stabilized zirconia (3YSZ) coatings were successfully obtained by suspension plasma spraying. The coatings present generally two-zones-microstructure comprising nanostructured zones contributed by unmolten, partially ...
DESARROLLO DE MATERIALES CERÁMICOS AVANZADOS CON ALTAS PRESTACIONES MEDIANTE TÉCNICAS NO CONVENCIONALES DE SINTERIZACIÓN: MICROONDAS

Benavente Martínez, Rut (2015-04-28)

[EN] Microwave material sintering provides many advantages over conventional methods. This is a non-conventional technique, where materials absorb and convert electromagnetic energy into heat. The heating process is very ...
DESENVOLVIMENTO DE NANOCOMPÓSITOS DE ALUMINA-CARBETO DE NIÓBIO POR SINTERIZAÇÃO NÃO-CONVENCIONAL

Ribeiro Rodrigues Alecrim, Laís (2017-11-03)

Alumina (Al2O3) matrix nanocomposites reinforced with a second nanometric phase have better mechanical properties, especially of hardness, fracture toughness and wear resistance compared to the monolithic alumina material. ...
DISEÑO Y DESARROLLO DE BIOCERÁMICAS BASE CIRCONA OBTENIDAS MEDIANTE TECNOLOGÍA DE MICROONDAS

Gil Flores, Lorena (2020-04-21)

[ES] Las cerámicas son cada vez más utilizadas como materiales estructurales con aplicaciones biomédicas debido a sus propiedades mecánicas, biocompatibilidad, características estéticas y durabilidad. En concreto, los ...
Dry-sliding wear behavior of 3Y-TZP/Al2O3-NbC nanocomposites produced by conventional sintering and spark plasma sintering

Salem, Raphael; Gutiérrez-González, C.F.; Borrell Tomás, María Amparo; Salvador Moya, Mª Dolores; Chinelatto, Adilson L.; Chinelatto, Adriana S.A.; Pallone, Eliria (Blackwell Publishing, 2019-04-02)

[EN] This work presents the initial results of the dry-sliding wear behavior of 3 mol% yttria-stabilized zirconia reinforced with 5 vol% alumina-niobium carbide (3Y-TZP/5 vol% Al2O3-NbC) nanocomposites sintered by conventional ...
Effect of Al2O3-NbC nanopowder incorporation on the mechanical properties of 3Y-TZP/Al2O3-NbC nanocomposites obtained by conventional and spark plasma sintering

Salem, Raphael; Monteiro, Raphael; Gutierrez, Carlos F.; Borrell Tomás, María Amparo; Salvador Moya, Mª Dolores; Chinelatto, Adriana S.A.; Chinelatto, Adilson; Ferreira, Julieta; Pallone, Eliria (Elsevier, 2018-02-01)

[EN] The incorporation of Al2O3-NbC-nanopowder reinforcement in a 3Y-TZP matrix, and its influence on the mechanical properties of 3YTZP/Al2O3-NbC nanocomposites, obtained by conventional and spark plasma sintering (SPS), ...
Effect of CNFs content on the tribological behaviour of spark plasma sintering ceramic-CNFs composites

Borrell Tomás, María Amparo; Torrecillas, R.; Rocha, V. G.; Fernandez, A.; Bonache Bezares, Victoria; Salvador Moya, Mª Dolores (Elsevier, 2012-01-27)

Alumina-carbon nanofibres (CNFs) and silicon carbide-CNFs nanocomposites with different volume fraction of CNFs (0-100vol.%) were obtained by spark plasma sintering. The effect of CNFs content on the tribological behaviour ...
Effect of graphene and CNFs addition on the mechanical and electrical properties of dense alumina-toughened zirconia composites

Rincón, Acacio; Moreno, Rodrigo; Chinelatto, Adriana S. A.; Gutierrez, Carlos F.; Salvador Moya, Mª Dolores; Borrell Tomás, María Amparo (Elsevier, 2016-01)

Fully dense carbon/alumina-toughened zirconia composites were prepared by using a combination of aqueous colloidal powder processing and spark plasma sintering technique (SPS). Various carbon elements were introduced in ...
Effect of microwave sintering on microstructure and mechanical properties in Y-TZP materials used for dental applications

Presenda, Álvaro; Salvador Moya, Mª Dolores; Penaranda-Foix, Felipe L.; Moreno, Rodrigo; Borrell Tomás, María Amparo (Elsevier, 2015-06)

The aim of this work is to study the application of microwave sintering to consolidate yttria-stabilized zirconia polycrystalline (Y-TZP) ceramics commonly applied in dentistry, so as to obtain highly dense materials and ...
Effect of particle size distribution of suspension feedstock on the microstructure and mechanical properties of suspension plasma spraying YSZ coatings

Carpio, Enrique; Bannier, Emilie; Salvador Moya, Mª Dolores; Borrell Tomás, María Amparo; Moreno, Rodrigo; Sánchez, Enrique (Elsevier Science SA, 2015-04-25)

In this work, aqueous suspension feedstocks with different particle size distribution from submicron- and nanosized YSZ powders were prepared. A previous colloidal characterisation allowed concentrated suspensions (~40 ...