Home

Person

Ludger Weber

This person has left EPFL

About
Privacy
Disclaimer

Graph Chatbot

Related publications (62)

Page 3 of 4

Influence of the wetting angle on capillary forces in pressure infiltration

Andreas Mortensen, Ludger Weber, Alain Léger

This work probes the influence of wetting on pressure infiltration. Pressure/saturation curves for the infiltration of packed F1000 angular alumina particle preforms by liquid Cu-Al and Sn-Al alloys are measured using an instrumented high-temperature press ...

Elsevier2015

Effect of Ca addition on interface formation in Al(Ca)/Al2O3 composites prepared by gas pressure assisted infiltration

Ludger Weber

The aim of the work is to study interface formation between Al2O3 particles and Al(Ca) matrix in dependence of Ca content. Aluminium matrix composites (AMC) subjected to investigation were prepared by gas pressure assisted infiltration of alumina beds with ...

Elsevier Sci Ltd2016

Role of the electron-phonon coupling on the thermal boundary conductance of metal/diamond interfaces with nanometric interlayers

Ludger Weber, Maïté Blank, Gionata Schneider

Thermal boundary conductance (TBC) of the Ag/diamond and Au/diamond interfaces with a nanometer-thick interface layer of either nickel or molybdenum is measured by time domain thermoreflectance and modeled based on a 3-layer two-temperature model (3l-TTM). ...

2019

Influence of a Nanometric Al2O3 Interlayer on the Thermal Conductance of an Al/(Si, Diamond) Interface

Ludger Weber, Christian Monachon

The effect of an Al2O3 interlayer on the thermal conductance of metal (Al)/non-metal (diamond and silicon) interfaces is investigated using Time Domain ThermoReflectance (TDTR). Interlayers between 1.7 and 20nm are deposited on oxygen-terminated diamond an ...

Wiley-Blackwell2015

Diamond-based Metal Matrix Composites for thermal Management - Potential and Limits

Ludger Weber, Reza Tavangar Hamzehkolaei

Diamond-based metal matrix composites have been made based on pure Al and eutectic Ag-3Si alloy by gas pressure infiltration into diamond powder beds with the aim to maximize thermal conductivity and to explore the range of coefficient of thermal expansion ...

Trans Tech Publications Ltd, Laublsrutistr 24, Ch-8717 Stafa-Zurich, Switzerland2009

Direct measurement of drainage curves in infiltration of SiC particle preforms

Andreas Mortensen, Ludger Weber, Maryam Bahraini Hasani

Drainage curves (plots of the non-wetting fluid saturation versus applied pressure) for infiltration of SiC particle preforms with Al and Al-12.2 at.% Si are measured at 1023 K (750 degrees C) with a pressure infiltration apparatus adapted for direct track ...

2008

The electrical conductivity of microcellular metals

Andreas Mortensen, Ludger Weber

The electrical conductivity of metallic foams varies strongly with porosity. Data are presented for replicated open-pore microcellular metal over a wide range of relative density. These data, together with data from the literature for different foam struct ...

2006

Composite material comprising a precious metal, manufacturing process and use of such a material

Andreas Mortensen, Ludger Weber, Reza Tavangar Hamzehkolaei

Composite material combining: - a precious metal or an alloy containing a precious metal, - and a boron-based ceramic having a melting point above that of said precious metal and a density at most equal to 4 g/cm3. ...

2012

Qualitative link between work of adhesion and thermal conductance of metal/diamond interfaces

Ludger Weber, Christian Monachon, Efthimios Kaxiras

We report Time-Domain ThermoReflectance experiments measuring the Thermal Boundary Conductance (TBC) of interfaces between diamond and metal surfaces, based on samples consisting of [111] diamond substrates with hydrogen or with sp2 carbon surface terminat ...

Amer Inst Physics2014

Non-conducting inclusions in a conducting matrix: Influence of inclusion size on electrical conductivity

Ludger Weber

2005

Measurement of damage evolution in continuous ceramic fibre-reinforced metals by acoustic emission

Andreas Mortensen, Ludger Weber, Andreas Rossoll, Benedikt Moser

Internal damage in uniaxial continuous alumina fibre-reinforced aluminium is measured by acoustic emission during tensile straining in the fibre direction. Over most of the loading history spatially uncorrelated fibre fragmentation occurs, consistent with ...

2008

Development of a new family of phosphorous-free Pt-based bulk metallic glasses

Ludger Weber, Maïté Blank, Hamed Kazemi, Cyrill Werner Cattin

New BMGs exhibiting strong glass forming ability combined with high hardness have been developed based on the Pt-Si-B ternary system. The effects of partial substitution of platinum by transition metals of the group iron, cobalt, nickel, and copper, as wel ...

Elsevier2017

Measuring and tailoring capillary forces during liquid metal infiltration

Andreas Mortensen, Ludger Weber, Maryam Bahraini Hasani, Masahiro Kida

A new technique is proposed for the direct measurement of capillary forces in systems of relevance to the infiltration processing of metal matrix composites. Capable of handling melt temperatures up to 1500 K and infiltration pressures up to 20 MPa, the te ...

2005

High-temperature wettability of aluminum nitride during liquid metal infiltration

Andreas Mortensen, Ludger Weber, Maryam Bahraini Hasani, Masahiro Kida

The high-temperature wettability of AlN particle preforms with pure molten Cu, Al and Ph is quantified by means of drainage curves measured during pressure infiltration. By integrating the drainage curves obtained in this study, the work of immersion for e ...

2008

Assessing predictive schemes for thermal conductivity against diamond-reinforced silver matrix composites at intermediate phase contrast

Ludger Weber, Reza Tavangar Hamzehkolaei

2007

On the influence of active element content on the thermal conductivity and thermal expansion of Cu-X (X = Cr, B) diamond composites

Ludger Weber, Reza Tavangar Hamzehkolaei

2007

Reactivity and thermal behaviour ofCu-Si/SiC composites: effects of SiC oxidation

Andreas Mortensen, Ludger Weber

2006

Platinum based alloys

Ludger Weber

An article made of an alloy of the general formula Pt1-a-bMa(B1-xMdx)b in which i) M stands for one or a mixture of metallic element(s) of the group Zr, Ti, Fe, Ni, Co, Cu, Pd, Ag, Al ii) Md stands for one or a mixture of several metalloids of the group Si ...

2012

Erratum: Influence of the thickness of a nanometric copper interlayer on Au/dielectric thermal boundary conductance (vol 124, 105304, 2018)

Ludger Weber, Maïté Blank

AMER INST PHYSICS2019

Prediction of flow structure and equilibrium bathymetry in an open channel bend with a very strong curvature

Ludger Weber, Koen Blanckaert

2008 Kubaba Congress Department and Travel Services2008