To view the lecture program please click here

Back to overview


WEB Influence of embedding materials on heat transfer and ignition transfer time in heterogeneous reactive material system

Tuesday (25.02.2020)
21:11 - 21:11 Poster Room
Part of:
- Poster *web*Smoothing of additive manufactured parts using ns-pulsed laser source 1 Dipl.-Ing. Florian Kuisat
- Poster TBA -
- Poster *web*Combustion Synthesis of High Entropy Alloys thin films 1 Dr. Anni Wang
- Poster *web*Surface macro-smoothing and micro-structuring of additive manufactured components by using DLIP technique for controlling wetting characteristics 1 Dipl.-Ing. Florian Kuisat
- Poster *web*Influence of embedding materials on heat transfer and ignition transfer time in heterogeneous reactive material system 1 Mostafa Baloochi
- Poster TBA -
- Poster *web*Self reactive joining process with multilayer foils in lap joint configuration 1 Marcus Glaser
- Poster *web*Thermodynamics and kinetics of phase formation in magnetron-sputtered Ni/Al multilayer thin films with nanoscale morphology 1 Sascha Sebastian Riegler
- Poster *web*Femtosecond laser approach to cut Ni/Al reactive foils without ignition of a self-propagation reaction 1 Maria Amelia Martins
- Poster *web*Effect of preparation angle on atom probe tomography of reactive multilayers 1 Christian Schäfer
- Poster *web*Reactive Ni/Al multilayers with 3D Morphologies 1 Konrad Jaekel
- Poster *web*Synchrotron radiation X-ray powder diffraction and magnetometric study of natural and synthetic terms of the stannite-kesterite pseudobinary system in the low temperature regime (5-275 K) 1 Dr. Francesco Di Benedetto
- Poster *web*Coating and Drying of Sodium-Ion-Battery Electrodes 1 Julian Klemens
- Poster *web*Analytical prediction model for Direct Laser Interference Patterning 1 Dr. Bogdan Voisiat
- Poster *web*CFD Analysis of joining processes using reactive multilayers on native surface morphologies of microelectronic substrates 1 Erik Wiss
- Poster *web*Top-Hat profile in Direct Laser Interference Patterning: Is it worth it? 1 Mikhael El-Khoury
- Poster *web*Laser-based (“2D”) surface treatment of lithium-ion battery electrodes to improve the rate capability 1 Jens Sandherr
- Poster *web*Microstructure investigation of superconducting NbN thin films on copper 1 Dipl.-Ing. Ying Li
- Poster TBA -
- Poster *web*Laser functionalized PEEK-based coating systems to minimize friction and wear 1 Dr. Tim Kunze
- Poster *web*Structure and Dynamics in a Layered Na-ion Battery Cathode 1 Euan Bassey
- Poster *web*Electrode-Processing using porous nano-structured Na3V2(PO4)3 (NVP) for Sodium-Ion Batteries 1 Luca Schneider
- Poster TBA -
- Poster *web*Experimental Approach for Phase Diagram determination of Li alloys 1 Joel Fels
- Poster *web*Process Integration of Few-Layer MoS2 into a-Si:H Heterojunction pin-Photodiodes for extended Infrared Detection 1 Charles Otieno Ogolla
- Poster *web*Ti3SiC2- and Ti3AlC2-based ceramics synthesis by spark plasma sintering of preceramic paper 1 Elizaveta Sedanova
- Poster *web*Overheating microstructural study of nickel-based superalloys from turbine blades of aircraft engines 1 Dr. Ana Pastor
- Poster *web*Electrochemical thermodynamics of Lithium Batteries and their materials 1 Prof. Dr. Hans Jürgen Seifert
- Poster *web*Corrosion Analysis of a 316L Stainless Steel Gas Outlet Sealed with a Copper Ring Used in the CO2 Methanation Process 1 Ananya Prechavut
- Poster *web*Self-propagating reaction of structured reactive Al/Ni multilayers 1 Yesenia Sauni
- Poster *web*3D structured electrodes for Li-ion batteries using open porous metal foams as current collector for high energy application 1 Jonas Oehm
- Poster *web*Novel air stable single source precursor for homogeneous crystalline TiS2 thin films 1 Anja Sutorius
- Poster *web*Synthesis of nickel-copper composite with controllable nanostructure through facile solvent control as positive electrode for high-performance supercapacitors 1 Dr. Damin Lee
- Poster *web*Towards understanding response generation in conductometric gas sensors 1 Stefan Kucharski
- Poster Effects of 3D electrode design on high-energy silicon-graphite anode materials 1 Yijing Zheng

Session -F: Functional Materials, Surfaces, and Devices
Belongs to:
Topic X: Poster Session

Reactive materials comprise particulate systems or multilayer materials consisting of two or more materials reacting with each other after they are ignited. The reaction initiation is possible using different sources of energy transfer, for example, an electric spark, laser pulse, mechanical forces or heating the whole system to a certain temperature. The propagation velocity in multilayer foils is in the order or greater than 10 m/s in dependence of the materials used in the bilayer stack. Typical application fields of this bilayer systems are soldering, welding, brazing or heating, especially important in microelectronic and microelectromechanical systems processing technology. For this applications different materials are used and in particular cases they are micro-heterogeneous. Due to the high propagation velocity and the accompanying large temperature gradients stress issues may arise. For this reason, it is necessary to design the heat and reaction propagation velocity in the heterogeneous reactive material system. In the current presentation the heat propagation in a heterogeneous reactive material system is studied using the COMSOL simulation tool. For the study of the heat transfer and ignition transfer time a model system was designed. It consists of a silicon substrate, 525 µm thick and 1 cm long, covered with a 100 nm thick silicon dioxide layer. On top of the layer a multilayer reactive material stripe was placed having a width and a height of 1 µm, respectively. The space between this material stripes was filled with different materials (SiO2, Si3N4, AlN, Si, diamond). On top of this heterogeneous layer a 1 µm thick sealing layer, consisting of an identical or another material was placed. The carried out two dimensional simulations demonstrated that the embedding material allows to scale the ignition transfer time and the heat propagation velocity to values in a wide range. For example, for a transfer length of 1 µm the ignition time can be designed from nanoseconds to several microseconds. This means, that a proper material selection in the heterogeneous reactive material system can accelerate the ignition velocity. On the other hand, a reduction of the heat propagation velocity and the ignition transfer velocity is possible if low thermal conductive materials are used as filling material, as shown for particulate systems. A detailed analysis and comparison of the obtained results to available experiment will be given.

Mostafa Baloochi
Technical University of Ilmenau
Additional Authors:
  • Johannes Werner
    TU Ilmenau
  • Dr. Anne Jung
    Universität des Saarlandes
  • Dr. Jörg Pezoldt
    TU Ilmenau