Concept

Dioxyde de zirconium

Publications associées (97)

Segmented cell testing for cathode parameter investigation

Christos Comninellis, Jan Van Herle, Zacharie Wuillemin, Josef Andreas Schuler, Pietro Tanasini

The increasing quality and durability of Solid Oxide Fuel Cells (SOFC) state-of-the-art materials renders the long-term testing of fuel cells difficult since considerably long equipment times are needed to obtain valuable results. Moreover, reproducibility ...

European Fuel Cell Forum 20102010

On the lattice coherency of oxide particles dispersed in EUROFER97

Nadine Baluc, Robin Schäublin, Amuthan Ramar

Oxide dispersion strengthened steels based on the ferritic/martensitic steel EUROFER97 are developed. The reinforcing particles dispersed in the matrix of EUROFER97 are made of yttria and yttrium titanium oxides. Microstructure is investigated by transmiss ...

Elsevier2009

High-temperature mechanical loss and creep behavior of fine-grained zirconia-containing nano-sized reinforcements

Robert Schaller, Claudia Ionascu

Polycrystalline zirconia (3Y-TZP grade) specimens unreinforced and reinforced with multiwalled carbon nanotubes (MWCNTs) or silicon carbide whiskers (SiCws) were processed by powder metallurgy and studied by mechanical spectroscopy. The high-temperature me ...

2009

High temperature mechanical spectroscopy of fine-grained zirconia and alumina containing nano-sized reinforcements

Claudia Ionascu

Polycrystalline zirconia (3Y-TZP grade) unreinforced and reinforced with multiwalled carbon nanotubes (CNTs) or silicon carbide whiskers (SiCw) or silicon carbide particles (SiCp) have been processed and studied by mechanical spectroscopy with complementar ...

EPFL2008

Crystal and magnetic structure of CeVO3

Philip Pattison

The crystal structure and the magnetic ordering pattern of the electrically insulating perovskite CeVO3 was investigated by high-resolution powder X-ray diffraction and single-crystal neutron diffraction. A structural phase transition from an orthorhombic ...

2008

High temperature mechanical loss spectrum of 3Y-TZP zirconia reinforced with carbon nanotubes or silicon carbide whiskers

Robert Schaller, Claudia Ionascu

High temperature plasticity of fine-grained ceramics (ZrO2, Al2O3, etc) is usually associated with a grain boundary sliding process. The aim of the present research is then to improve the high-temperature mechanical strength of polycrystalline zirconia (3Y ...

Trans Tech Publications Ltd, Laublsrutistr 24, Ch-8717 Stafa-Zurich, Switzerland2008

Preparation and properties of KNbO3-based piezoelectric ceramics

Evelyn Hollenstein

During the last several years, new lead-free piezoelectric materials have been developed to replace the lead-based materials, such as PZT. Presently, the family of lead-free ceramics showing the most promising piezoelectric properties is based on potassium ...

EPFL2007

Titanium oxides and silicates as high-kappa dielectrics: A first-principles investigation

Alfredo Pasquarello

Using density functional theory, we investigate the structural, vibrational, and dielectric properties of titanium oxides and silicates, which have attracted considerable attention in the framework of the quest for alternative high-K materials. For the oxi ...

2005

Modelling of dielectric constants of amorphous Zr silicates

Alfredo Pasquarello

We discuss various decomposition schemes for analysing the dielectric constants of Zr silicates in terms of local properties. Such schemes serve the purpose of predicting the dielectric constants of amorphous alloys, when their system size precludes the po ...

2005

Fabrication and microstructure characterization of inert matrix fuel based on yttria stabilized zirconia

Manuel Alexandre Pouchon

The deployment of a suitable, Pu-bearing inert matrix fuel (IMF) could offer an attractive option as a single-recycling LWR strategy aimed at reducing the currently growing plutonium stockpiles. A development programme focusing on yttria stabilized zirconi ...

Elsevier2005

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