0000000000397359

AUTHOR

Ramón Torrecillas

showing 4 related works from this author

Ceramic/metal nanocomposites by lyophilization: Spark plasma sintering and hardness

2014

The present study is focused on the procedure of spray-drying and lyophilization techniques for the preparation of ceramic/metal nanocomposites. The results of the study at all stages are compared with those corresponding to powders conventionally dried by heating in furnace. Starting from aqueous solutions of metal salts and ceramic powders, the procedure follows with spray-drying, lyophilization, calcination of the resulting powders and subsequent Spark Plasma Sintering (SPS). X-ray diffraction analysis of the powders at different stages of the processing routes was used for phase indexing; further characterization was performed by Transmission Electron Microscopy and Energy Dispersive X-…

Materials scienceNanocompositeProcess Chemistry and TechnologySpark plasma sinteringMechanical propertiesNanocompositesSurfaces Coatings and FilmsElectronic Optical and Magnetic Materialslaw.inventionHardnessTransmission electron microscopylawFreeze-dryingvisual_artVickers hardness testMaterials ChemistryCeramics and Compositesvisual_art.visual_art_mediumZrO2Cubic zirconiaNanometreCalcinationCeramicComposite materialCeramics International
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Ceramic/metal nanocomposites by lyophilization: Processing and HRTEM study

2012

5 páginas, 8 figuras, 1 tabla.-- El pdf del artículo es el manuscrito de autor.

Materials scienceNanocompositeMechanical EngineeringNanotechnologyLiquid nitrogenCondensed Matter PhysicsMicrostructureNanostructuresCrystallinityChemical engineeringMechanics of MaterialsTransmission electron microscopyFreeze-dryingvisual_artElectron microscopyvisual_art.visual_art_mediumGeneral Materials ScienceParticle sizeCeramicHigh-resolution transmission electron microscopyCompositesMaterials Research Bulletin
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Microstructure and mechanical effects of spark plasma sintering in alumina monolithic ceramics

2013

The specific effects of spark plasma sintering (SPS) on the creep behavior, microstructure and mechanical properties of alumina monolithic ceramic were investigated. SPS introduces strains that concentrate at grain boundaries and inhibit crack growth, resulting in an improvement in the flexural strength and fracture toughness. However, creep blocks grain boundary movements and decreases the reliability of the material. These strains can be removed by a post-sintering thermal treatment, which plays an important role in the distribution of dislocations.

CeramicsMaterials scienceSpark plasma sinteringDislocationsMechanical propertiesThermal treatmentFracture toughnessFlexural strengthCIENCIA DE LOS MATERIALES E INGENIERIA METALURGICAGeneral Materials ScienceCeramicComposite materialMechanical EngineeringfungiMetals and Alloystechnology industry and agriculturefood and beveragesCondensed Matter PhysicsMicrostructureequipment and suppliesCreepMechanics of Materialsvisual_artvisual_art.visual_art_mediumGrain boundaryHigh-temperature deformationTransmission electron microscopy
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Spark plasma sintering of zirconia/nano-nickel composites

2015

Open Access

NanocompositeMaterials scienceMechanical EngineeringPowder materialsSpark plasma sinteringchemistry.chemical_elementSpark plasma sinteringMechanical propertiesNanoceramicsCeramic matrix compositeZirconia-nickel compositesIndustrial and Manufacturing Engineeringlaw.inventionNanocompositesNickelchemistrylawVickers hardness testGeneral Materials ScienceCubic zirconiaCalcinationComposite materialHigh-resolution transmission electron microscopyNanomaterials
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