Concept

Bombe au cobalt

Publications associées (7)

Strain glass transition of cobalt phase in a cemented carbide

Cemented carbides are hard materials used for the fabrication of cutting tools. They consist of hard micron or sub-micron carbide grains held together in a matrix of a tough metallic binder such as cobalt. The understanding and control of cobalt characteri ...

ELSEVIER SCI LTD2020

Modelling the global primary extraction, supply, price and depletion of the extractable gogical resources using the cobalt model

The global supply of cobalt was simulated by combining 3 different system dynamics models; BRONZE, PGM and STEEL. The present use of cobalt shows a low degree of recycling and systemic losses are significant. The reserves of cobalt are not very large (20-2 ...

A World Resources Forum Production, PSI2017

Revision of the EPICA Dome C CO2 record from 800 to 600-kyr before present

Jérôme Chappellaz

Firn air and ice have been sampled and analyzed for trace gases (CO2, N2O, CH4, and CO) and isotopes (14C, 13C, and 18O of CO2; 3H of ice) at 3 m intervals from the surface to the depth of closure at 60 m on the Devon Island Ice Cap, a low-elevation perman ...

American Geophysical Union (AGU)2015

Comparative evaluation of particle properties, formation of reactive oxygen species and genotoxic potential of tungsten carbide based nanoparticles in vitro

Kristin Schirmer

Tungsten carbide (WC) and cobalt (Co) are constituents of hard metals and are used for the production of extremely hard tools. Previous studies have identified greater cytotoxic potential of WC-based nanopartides if particles contained Co. The aim of this ...

Elsevier Science Bv2012

Precipitation and transformation of nanostructured copper oxalate and copper/cobalt composite precursor synthesis

Lucica Soare

The aim of this thesis was to synthesise and control a nanostructured composite of copper/cobalt. Both the copper and cobalt oxalate exhibit a nanostructure. Attempts to produce nanocomposite particles in the size range of 10-70 nm were made via an oxalate ...

EPFL2004

High temperature deformation mechanisms of cemented carbides and cermets

The motivation of this work derives from the need of the cutting tool industry to improve its products in order to support harder and harder working conditions, namely increasing cutting speeds and working on stronger modern materials. The lifetime of the ...

EPFL2004

Survey of in-vessel candidate materials for fusion power plants - the European materials R&D programme

The long term European materials R&D programme is mainly focused on the development of the following DEMO relevant materials: structural (RAFM steel called EUROFER), plasma facing (W alloy), breeder and neutron multiplier (Pb-17Li, Li4SiO4, Li2TiO3 and Be) ...

2003

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