Concept

Metallography

Related publications (147)

Al2O3 particle rounding in molten copper and Cu8wt%Al

We investigate processing-microstructure relationships in the production of Al2O3 particle reinforced copper composites by solidification processing. We show that during production of the composites by gas-pressure infiltration of packed Al2O3 particle pre ...

Springer US2012

Slip in directionally solidified Mo-alloy micropillars - Part I: Nominally dislocation-free pillars

Cécile Hébert, Helena Van Swygenhoven, Emad Oveisi, Steven Van Petegem, Barbora Bártová, Camelia Borca, Cécile Renée Maria Marichal

In situ Laue analysis during microcompression reveals plasticity in [0 0 1]-oriented, directionally solidified Mo alloy pillars to start with slip on the {1 1 2} < 1 1 1 > system having the highest Schmid factor followed by slip on the (1 1 0) plane contai ...

Elsevier2012

Fracture of convoluted and lamellar α2 + γ TiAl alloys

Andreas Mortensen, Frédéric Diologent, Nicolas Vincent Barbi

Fracture toughness tests are conducted at room temperature and 923 K (650 degrees C) on SENB (Single Edge Notched Bend) specimens of three different (alpha(2) + gamma ) TiAl-based alloys. One alloy is a conventional near fully lamellar Ti-45Al-2Mn-2Nb + 0. ...

Elsevier2012

Electrical and optical properties of Ta-Si-N thin films deposited by reactive magnetron sputtering

Rosendo Sanjines, David Oezer

The electrical and optical properties of TaxSiyNz thin films deposited by reactive magnetron sputtering from individual Ta and Si targets were studied in order to investigate the effects of nitrogen and silicon contents on both properties and their correla ...

Amer Inst Physics2012

Atomistic modeling of the effect of codoping on the atomistic structure of interfaces in alpha-alumina

Paul Bowen, Michael Stuer, Sandra Caroline Galmarini, Abhishek Tewari

Sintering aids or dopants have often been used successfully to limit the grain growth of alumina during sintering. Recently codoping of alumina with transition elements has been reported to produce additional effects in comparison to single doping in enhan ...

2012

W-2 wt.%Y2O3 composite: Microstructure and mechanical properties

Philippe Spätig, Nadine Baluc, Robin Schäublin

A W-2Y(2)O(3) composite is produced by powder metallurgy, including the pressing of the mixed elemental powders, their sintering and hot forging. The microstructure of the obtained composite is investigated using light microscopy, scanning electron microsc ...

2012

Three-dimensional microstructural changes in the Ni-YSZ solid oxide fuel cell anode during operation

Jan Van Herle, Aïcha Hessler-Wyser, Antonin Faes

Microstructural evolution in solid oxide fuel cell (SOFC) cermet anodes has been investigated using X-ray nanotomography along with differential absorption imaging. SOFC anode supports composed of Ni and yttria-stabilized zirconia (YSZ) were subjected to e ...

2012

Indentation induced damage in silicon nitride

Jean-François Molinari, Seyedeh Mohadeseh Taheri Mousavi

Presenting the procedure for simulating the silicon nitride microstructure and cleavage planes which is needed for numerical simulations ...

2011

Electromechanical properties of Al0.9Sc0.1N thin films evaluated at 2.5 GHz film bulk acoustic resonators

Paul Muralt, Ramin Matloub Aghdam, Silviu Cosmin Sandu, Alvaro Artieda, Evgeny Milyutin

AlN films are employed in RF filters for wireless communication. We report on enhanced coupling factors k(t)(2) obtained by partial substitution of Al by Sc. Al0.88Sc0.12N films were deposited by reactive magnetron sputtering from an Al0.9Sc0.1 alloy targe ...

2011

Polymer Brush Guided Formation of Thin Gold and Palladium/Gold Bimetallic Films

Harm-Anton Klok, Dusko Paripovic

This manuscript reports a new strategy to guide the chemical solution deposition of thin, microstructured metal films. The proposed strategy is based on the use of poly(2-(methacryloyloxy)ethyl ammonium chloride) (PMETAC) brushes grown via surface-initiate ...

2011

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