November 27, 2014 (v1)
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Uploaded on: March 27, 2023
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January 14, 2015 (v1)Publication
Se han fabricado compuestos de 80% vol. Al2 O3/TZP (ZrO2 estabilizada con 2% mol Y2 O3) codopados con 1% vol. Fe2 O3 y 1% vol. TiO2 mediante la tecnología RBAO ("Reaction Bonding of Aluminum Oxide"), que se han sinterizado libremente (1450 ºC, 60 min) y bajo carga uniaxial (20 MPa, 1200 ºC, 60 min). Se ha caracterizado la microestructura...
Uploaded on: December 4, 2022 -
June 9, 2015 (v1)Publication
Se ha estudiado el comportamiento plástico a alta temperatura de alúmina codopada con cantidades equimolares de óxidos de cobre (CuO) y titanio (TiO2) fabricada por reacción mediante el empleo de ensayos de fluencia y de relajación de tensiones en atmósfera de aire. Los resultados de los ensayos de deformación plástica han sido correlacionados...
Uploaded on: March 27, 2023 -
January 14, 2015 (v1)Publication
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Uploaded on: March 27, 2023 -
January 11, 2024 (v1)Publication
The creep behavior of tetragonal zirconia TZP-Ni cermets with metal contents below, close to, and above the percolation limit has been studied. Compressive creep tests were performed on as-received materials and samples in which the metal phase was chemically removed (ceramic skeletons). The stress exponent and the activation energy for plastic...
Uploaded on: January 13, 2024 -
September 14, 2015 (v1)Publication
Embothrium coccineum J.R. Forst. & G. Forst. (Proteaceae) is a tree that grows successfully in nutrient poor soils of southern Chile at full sunlight. Under these conditions it develops cluster roots (CR). However, the induction of CR on this species has not been studied completely. The aim of this work was to study the effect of...
Uploaded on: December 4, 2022 -
January 10, 2024 (v1)Publication
The microstructure of 3 mol% Y2O3-stabilized tetragonal ZrO2/Ni (TZP/Ni) composites has been investigated for nickel concentrations of 20, 30 and 40 vol.% before and after creep tests conducted in argon atmosphere at 1250 °C under stresses between 9 and 14 MPa. The microstructures have been characterized using scanning, conventional and...
Uploaded on: January 12, 2024 -
January 10, 2024 (v1)Publication
The influence of an oxidizing atmosphere on the high-temperature plasticity of zirconia/nickel cermets has been studied by conducting creep tests in air. The resulting microstructure has been characterized by scanning, conventional and high-resolution electron microscopy. Despite the large microstructural changes, the composites do not exhibit...
Uploaded on: January 12, 2024 -
January 14, 2015 (v1)Publication
Se han estudiado carburos de silicio biomórficos (bioSiC) fabricados mediante infiltración reactiva de silicio líquido en una preforma de carbón de origen vegetal. Se obtiene así una cerámica porosa de SiC con silicio remanente en sus poros. Este silicio puede alterar considerablemente las propiedades mecánicas de los bioSiC. Este trabajo...
Uploaded on: December 4, 2022