Symposium

F07: Materials with morphologically imprinted transformations

Belongs to:
TopicF: Functional Materials, Surfaces, and Devices

In the wide range of exothermic phase formations between metals or between metals and non-metals, the so-called self-propagating reactions take a special position. Their outstanding feature is the capability to release heat of reaction on a temporal and spatial scale that allows them to sustain and propagate the reaction after a local ignition. As the reaction is governed by heat and mass transport, the geometrical (morphological) arrangement of reactants plays a crucial role for its properties and transformation. The use of different morphologies like nanolayers or nanopowders is reported. However, a broader perspective of morphology appears necessary, for which the concept of “morphological signature”, which is seen as the entity of all geometrical, chemical and microstructural characteristics of the material at the macro, micro, nano and atomic level becomes important. Some progress on selected predesigned morphologies has been reported, e.g. in reactive nanofoils, but a general fundamental understanding for a broad variety of morphologies is lacking. Consequently, the full technological potential of complex tailored morphologies is yet to be explored, which represents the leading and central aim of the symposium.

The symposium should bringing together scientist and experts from simulation, physical metallurgy, thin film deposition technology, structuring, microstructure analysis and joining technology. Application can be in reactive joining on micro- and macro-scale or in joining dissimilar materials, even self-repairing or self-protecting devices, auto-disassembly and recycling. The visions are materials that transform from a pre-designed morphology and microstructure into a desired state with desired functional properties through an morphologically predesigned transformation. Thus, all key aspects of self-propagating reactions and imprinted transformations should be combined and applications discussed.


Poster F07: Materials with morphologically imprinted transformations
WEB Reactive Ni/Al multilayers with 3D Morphologies

Konrad Jaekel Yesenia Sauni Dr. Heike Bartsch Sascha Sebastian Riegler Dr. Isabella Gallino Prof. Dr. Peter Schaaf

Poster F07: Materials with morphologically imprinted transformations
CFD Analysis of joining processes using reactive multilayers on native surface morphologies of microelectronic substrates

Erik Wiss Dr. Adam Yuile Sascha Riegler Alexander Schulz Dr. Isabella Gallino Prof. Dr. Jens Müller Prof. Dr. Steffen Wiese

Poster F07: Materials with morphologically imprinted transformations
Effect of preparation angle on atom probe tomography of reactive multilayers

Christian Schäfer Dr. Christoph Pauly Prof. Dr. Frank Mücklich Dr. Michael Stüber

Poster F07: Materials with morphologically imprinted transformations
Femtosecond laser approach to cut Ni/Al reactive foils without ignition of a self-propagation reaction

Maria Amelia Martins Dr. Christoph Pauly Prof. Dr. Jean Pierre Bergmann Prof. Dr. Frank Mücklich

Poster F07: Materials with morphologically imprinted transformations
Influence of embedding materials on heat transfer and ignition transfer time in heterogeneous reactive material system

Mostafa Baloochi Johannes Werner Dr. Anne Jung Dr. Jörg Pezoldt

Lecture F07: Materials with morphologically imprinted transformations
Ternary reactive Ru/Al/X multilayers – How morphology design controls ignition, propagation and microstructure evolution

Dr.-Ing. Christoph Pauly Dr. Karsten Woll Dr. Isabella Gallino Dr. Michael Stüber Prof. Dr. Frank Mücklich

Poster F07: Materials with morphologically imprinted transformations
Thermodynamics and kinetics of phase formation in magnetron-sputtered Ni/Al multilayer thin films with nanoscale morphology

Sascha Sebastian Riegler Dr. Isabella Gallino Dr. Michael Stüber Dr. Julia Ivanisenko Dr. Heike Bartsch Prof. Dr. Peter Schaaf Prof. Dr. Ralf Busch

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