The present work reports on a positron annihilation study addressing the structural and chemical characterization of solute aggregates containing open volumes (vacancies and/or misfit regions at precipitate–matrix interfaces) in AlZnMg, AlCu, and AlCuMg alloys. High resolution transmission electron microscopy results for selected ageing conditions are also presented. Two main points are discuss...

A vertical continuous compound casting technology for the production of rotationally symmetric bilayer rods consisting brass CuZn37 and aluminum AA7075 was developed. The interface metallurgically bonded semi-finished products composed four intermetallic layers an anomalous eutectic area Al2Cu (?-AlCu), Al solid solution (?-Al), other precipitates. were CuZn (?-CuZn), a suggested two-phase regi...

Highly interconnected silicon nanowires (SiNW) were prepared by a vapor−liquid−solid process using a multilayered AlCu film as the catalyst. The resulting SiNWs had a branched and interconnected structure where the AlCu catalyst was incorporated into the SiNWs. The electrochemical lithiation of the SiNWs was investigated through both deep and shallow cycling. The first cycle Coulombic efficienc...

We present a reasoning procedure for ontologies with uncertainty described in Description Logic (DL) which include General TBoxes, i.e., include cycles and General Concept Inclusions (GCIs). For this, we consider the description language ALCU , in which uncertainty parameters are associated with ABoxes and TBoxes, and which allows General TBoxes. Using this language as a basis, we then present ...

We recently developed an approach for calculation of the electron-phonon (electron-ion in a more general case) coupling materials based on tight-binding molecular dynamics simulations. In present work we utilize this to study partial contributions inter- and intraband electron scattering events into total Al, Au, Cu elemental metals AlCu alloy. demonstrate that interband plays important role el...

This paper investigates the distortion of DC and radio frequency (RF) pulsed signals in carbon nanotube interconnects. A modified transmission line model for single-walled carbon nanotubes is employed for the simulation. Comparisons with the conventional AlCu interconnect are performed. r 2007 Elsevier Ltd. All rights reserved.

• Exceptionally hard Al-Cu thin films. Close correlation between the microstructure and occurrence of size effect. Unexpected absence effect phenomenon in fine-grained materials. Size strongly precipitated Dual DC magnetron sputtered AlCu films representing whole composition range were investigated by depth-sensing indentation (DSI), transmission electron microscopy (TEM) atomic force (AFM). Ex...