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Mostrando ítems 81-90 de 95
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Processing and characterisation of cermet/hardmetal laminates with strong interfaces
(Elsevier, 2014)
Cemented carbides and cermets are potential materials for high speed machining tools. However, cemented carbides are not chemically stable at high temperature and cermets present poor fracture toughness. Novel cermet/hardmetal ...
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Designing, processing and characterisation of titanium cylinders with graded porosity: An alternative to stress-shielding solutions
(Elsevier, 2014)
Bone resorption events and consequent failure of titanium implants are frequently related to stress-shielding problems, due to stiffness mismatch with respect to bone. This is a mechanical incompatibility problem, which ...
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Manufacturing optimisation of an original nanostructured (beta + gamma)-TiNbTa material
(Elsevier Editora Ltda, 2019)
An original (beta + gamma)-TiNbTa material was manufactured by an optimised powder metallurgy treatment, based on a mechanical alloying (MA) synthesis, carried out at low energy, and a subsequently field assisted consolidation ...
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El Técnico de Prevención como profesión regulada. Propuesta de titulación oficial (II)
(2014)
El panorama académico debe cambiar, la profesión necesita un reconocimiento. En esta segunda parte se expone dos posibles alternativas que proponen los autores, por una parte la creación de una Titulación de Grado y por ...
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Chemical and structural investigations of the interactions of Cu with MnSiO3 diffusion barrier layers
(American Institute of Physics, 2012-09)
X-ray photoelectron spectroscopy (XPS) has been used to investigate the thermodynamic stability of Cu layers deposited onto Mn silicate (MnSiO3) barrier layers formed on SiO2 surfaces. Using a fully in situ growth and ...
Artículo
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Effect of graphene nanoplatelets thickness on strain sensitivity of nanocomposites: A deeper theoretical to experimental analysis
(Elsevier, 2019-09)
Conductive epoxy nanocomposites were prepared using two different thickness graphene nanoplatelets (GNPs) as reinforcement, H25 and M25. In both cases, 3 and 5 wt % GNPs was dispersed into the matrix by means of sonication ...
Artículo
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Evaluation of sensitivity for detecting different failure modes of epoxy matrix composites doped with graphene nanoparticles
(Elsevier, 2019-10)
In recent years, the interest in monitoring the damage of composite materials by measuring the variation of electrical resistance is increasing because deformations and cracks generated in the structure produce changes in ...
Artículo
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A Method to Determine the Electrical Resistance of a Metallic Powder Mass under Compression
(MDPI, 2017-11-06)
In this paper, a phenomenological model to predict the value of the electrical resistance of a compressed metal powder mass is proposed. The model, based on the experimental compressibility and resistivity-porosity curves, ...
Artículo
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Enhanced oxidation resistance of Ti(C,N)-based cermets containing Ta
(Elsevier, 2014)
(TixTa1-x)(C0.5N0.5)-Co-based cermets with various Ta contents (x=0, 0.01, 0.05, 0.1 and 0.2) were oxidized at 900°C for 48h in static air. A parabolic rate law, which is indicative of the formation of a protective oxide ...
Artículo
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Harmonization of Transport Data Sources According to INSPIRE Data Specification on Transport Networks
(Elsevier, 2016)
There are numerous sources of data referred to transport from different suppliers, the main one being the Public Administration. According to the objective of each project, datasets are collected and formatted in a ...