Relevant bibliographies by topics / Self-propagating exothermic reaction

Academic literature on the topic 'Self-propagating exothermic reaction'

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Published: 10 December 2022
Last updated: 28 January 2023

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Journal articles on the topic "Self-propagating exothermic reaction"

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Namazu, Takahiro, and Shozo Inoue. "Al/Ni Self-Propagating Exothermic Film for MEMS Application." Materials Science Forum 638-642 (January 2010): 2142–47. http://dx.doi.org/10.4028/www.scientific.net/msf.638-642.2142.

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This paper describes evaluation of the strength in Ag-Sn-jointed Si specimens heated by Al/Ni film’s exothermic reaction. The reaction generates heat enough to melt Ag-Sn film for soldering. To measure the strength, four-point micro-bending test technique has been developed. The rectangular-solid Si specimens having a Ag-Sn/AlNi/Ag-Sn section were prepared by dicing the bonded Si-wafer under various pressure loads. A higher pressure yielded a better contact condition between Al/Ni and Ag-Sn so that heat-conduction improved; consequently Ag-Sn was melted sufficiently. Al/Ni reactive film has a potential as a micro-heater in soldering for MEMS.
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Miyake, Shugo, Taisei Izumi, and Rino Yamamoto. "Effect of the Particle Size of Al/Ni Multilayer Powder on the Exothermic Characterization." Materials 13, no. 19 (October 1, 2020): 4394. http://dx.doi.org/10.3390/ma13194394.

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In this study, the exothermic temperature performance of various Al/Ni multilayer powders with particle sizes ranging from under 75 to over 850 µm, which generate enormous heat during self-propagating exothermic reactions, was determined using a high-speed sampling pyrometer. The Al/Ni multilayer powders were prepared by a cold-rolling and pulverizing method. The multilayer constitution of the Al/Ni multilayer powders was examined by observing the cross-section of the powders using scanning electron microscopy; the results indicate that the powders had similar lamellar structures regardless of the particle size. Exothermic reactions were carried out to measure the temperature changes during the experiment using a pyrometer. We found that the maximum temperature and the duration of the exothermic reaction increased with an increase in the particle size caused by the heat dissipation of the surface area of the Al/Ni multilayer powder. This indicates that the thermal characteristics of the exothermic reaction of the Al/Ni multilayer powder can be controlled by adjusting the particle size of the Al/Ni multilayer powder. Finally, we concluded that this controllability of the exothermic phenomenon can be applied as a local heating source in a wide range of fields.
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Li, Jing, Zheng Yi Fu, Jin Yong Zhang, Hao Wang, Wei Min Wang, Yu Cheng Wang, and Yi Bing Cheng. "Preparation of ZrC Powder by Self-Propagating High-Temperature Synthesis." Advanced Materials Research 66 (April 2009): 258–61. http://dx.doi.org/10.4028/www.scientific.net/amr.66.258.

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ZrC fine powder has been prepared by self-propagating high-temperature synthesis (SHS) using exothermic reaction of ZrO2-C-Mg system. By theoretical calculating, the adiabatic temperature (Tad) for the system is about 2235K enough to react as SHS process. The Tad observed during experiment is 1850K. The results show that high pure ZrC powder is obtained with appropriate Mg contents. The scanning electron micrograph shows that the average size of ZrC particles is about 2μm.
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Yamada, Osamu, Yoshinari Miyamoto, and Mitsue Koizumi. "Self-propagating high-temperature synthesis of the SiC." Journal of Materials Research 1, no. 2 (April 1986): 275–79. http://dx.doi.org/10.1557/jmr.1986.0275.

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Self-propagating high-temperature synthesis (SHS), also called combustion synthesis, is useful for fabricating numerous ceramics. In the case of SiC, heat released from the exothermic reaction is not sufficient to completely convert the mixed reactants of constituent elements into SiC in the usual nonadiabatic experimental system. This disadvantage could be overcome by a new ignition process called, the “direct passing method of electric current.” By using this method, stoichiometric fine SiC powder could be obtained rapidly and efficiently with low electric power. This paper also involves the effect of particle size of Si and C initial reactant powders on conversion efficiency into SiC and also on particle size of SiC powder fabricated by this method.
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Qiu, X., J. Graeter, L. Kecskes, and J. Wang. "Exothermic reactions in cold-rolled Ni/Al reactive multilayer foils." Journal of Materials Research 23, no. 2 (February 2008): 367–75. http://dx.doi.org/10.1557/jmr.2008.0043.

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Exothermic reactions in cold-rolled Ni/Al reactive multilayer foils were investigated in this study. A two-stage reaction process was observed in the self-propagating reactions in the cold-rolled foils that were ignited by a point-source flame. Foils taken out of the flame after completing the first stage of the reaction process were compared to those allowed to complete both stages. Differences in the phase-evolution sequence from the two types of foils were studied by differential scanning calorimetry (DSC), using slow and controlled heating of the samples. Several exothermic peaks could be identified from the DSC thermograms for both types of foils. Using the DSC, both the as-cold-rolled and partially reacted foils were heated to each peak temperature to identify the reaction product associated with each peak. X-ray diffraction and scanning electron microscopy analyses showed that the first two peaks corresponded to the formation of Al3Ni, while the third peak corresponded to the formation of AlNi.
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Wang, Xiaoting, Mingyu Li, and Wenbo Zhu. "Formation and homogenization of Si interconnects by non-equilibrium self-propagating exothermic reaction." Journal of Alloys and Compounds 817 (March 2020): 153210. http://dx.doi.org/10.1016/j.jallcom.2019.153210.

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Zhou, Zheng, Liping Mo, Hui Liu, Y. C. Chan, and Fengshun Wu. "Study of Fusion Thickness of Tin Solder Heating by Self-Propagating Exothermic Reaction." Journal of Electronic Materials 47, no. 12 (September 28, 2018): 7435–48. http://dx.doi.org/10.1007/s11664-018-6684-9.

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McDonald, Joel P., Mark A. Rodriguez, Eric D. Jones, and David P. Adams. "Rare-earth transition-metal intermetallic compounds produced via self-propagating, high-temperature synthesis." Journal of Materials Research 25, no. 4 (April 2010): 718–27. http://dx.doi.org/10.1557/jmr.2010.0091.

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Several binary intermetallic compounds—each containing a rare-earth (RE) element paired with a transition metal (TM)—were prepared by self-propagating, high-temperature synthesis (SHS). Thin multilayers, composed of alternating Sc or Y (RE element) and Ag, Cu, or Au (TM), were first deposited by direct current magnetron sputtering. Once the initially distinct layers were stimulated and caused to mix, exothermic reactions propagated to completion. X-ray diffraction revealed that Sc/Au, Sc/Cu, Y/Au, and Y/Cu multilayers react in vacuum to form single-phase, cubic B2 structures. Multilayers containing Ag and a RE metal formed cubic B2 (RE)Ag and a minority (RE)Ag2 phase. The influence of an oxygen-containing environment on the reaction dynamics and the formation of phase were investigated, providing evidence for the participation of secondary combustion reactions during metal-metal SHS. High-speed photography demonstrated reaction propagation speeds that ranged from 0.1–40.0 m/s (dependent on material system and foil design). Both steady and spin-like reaction modes were observed.
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Hector, Andrew L., and Ivan P. Parkin. "Transition Metal Pnictide Synthesis: Self Propagating Reactions Involving Sodium Arsenide, Antimonide and Bismuthide." Zeitschrift für Naturforschung B 49, no. 4 (April 1, 1994): 477–82. http://dx.doi.org/10.1515/znb-1994-0408.

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Initiation of the reaction between Na 3E (E = As, Sb, Bi) and anhydrous metal halides at 25 to 550 °C produces metal arsenides MxAsy (M=Y,La, Ti, Hf, V, Nb, Ta, Cr, Mo, W, Mn, Fe, Co, Ni, Pt ,Cu and Zn) and antimonides MxSby (M=Ti, V, Nb, Ta, Cr, Fe, Co, Ni, Pt, Cu and Zn) via an exothermic selfpropagating reaction. The metal arsenides were characterized by X-ray powder diffraction, SEM/EDAX , microanalysis and FT-IR.
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Namazu, Takahiro, Kohei Ohtani, Keisuke Yoshiki, and Shozo Inoue. "Crack-Less Wafer-Level Packaging Using Flash Heating Technique for Micro Devices." Materials Science Forum 706-709 (January 2012): 1979–83. http://dx.doi.org/10.4028/www.scientific.net/msf.706-709.1979.

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In this article, a new technique for controlling crack position and its propagation direction in solder-bonding using Al/Ni exothermic reaction is described. Sputtered Al/Ni multilayer film is able to produce heat instantly by its self-propagating exothermic reaction, and the reactive film can be used as heat source for solder-bonding. During the reaction, however, volume reduction by approximately 12% occurs due to crystal structural change from fcc to bcc and lattice-spacing reduction. Consequently, cracks are produced in the reacted NiAl structure. The cracks negatively affect the strength of the bonded system. We have found a new technique for controlling crack position and its propagation direction. Multiple ignitions for reaction demonstrated that cracks in reacted NiAl film can be controlled. When applying the flash heating technique to wafer-level bonding, cracks are probably produced. If cracks can be fabricated on dicing cut lines by using the simultaneous multiple reactions technique, crack-less solder-bonded Si hermetic packages would be realized.
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Dissertations / Theses on the topic "Self-propagating exothermic reaction"

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Bräuer, Jörg. "Erarbeitung eines Raumtemperatur-Waferbondverfahrens basierend auf integrierten und reaktiven nanoskaligen Multilagensystemen." Doctoral thesis, Universitätsbibliothek Chemnitz, 2014. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-qucosa-132820.

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Die vorliegende Arbeit beschreibt einen neuartigen Fügeprozess, das sogenannte reaktive Fügen bzw. Bonden. Hierbei werden sich selbsterhaltene exotherme Reaktionen in nanoskaligen Schichtsystemen als lokale Wärmequelle für das Fügen unterschiedlichster Substrate der Mikrosystemtechnik verwendet. Das Bonden mit den reaktiven Systemen unterscheidet sich von herkömmlichen Verfahren der Aufbau- und Verbindungstechnik primär dadurch, dass durch die rasche Reaktionsausbreitung bei gleichzeitig kleinem Reaktionsvolumen die Fügetemperaturen unmittelbar auf die Fügefläche beschränkt bleiben. Entgegen den herkömmlichen Fügeverfahren mit Wärmeeintrag im Volumen, schont das neue Verfahren empfindliche Bauteile und Materialien mit unterschiedlichsten thermischen Ausdehnungskoeffizienten lassen sich besser verbinden. In der vorliegenden Arbeit werden die Grundlagen zur Dimensionierung, Prozessierung und Integration der gesputterten reaktiven Materialsysteme beschrieben. Diese Systeme werden verwendet, um heterogene Materialien mit unterschiedlichen Durchmessern innerhalb kürzester Zeit auf Wafer-Ebene und bei Raumtemperatur zu bonden. Die so erzeugten Verbindungen werden hinsichtlich der Mikrostruktur, der Zuverlässigkeit sowie der Dichtheit untersucht und bewertet. Zusätzlich wird die Temperaturverteilung in der Fügezone während des Fügeprozesses mit numerischen Methoden vorhergesagt.
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Bräuer, Jörg. "Erarbeitung eines Raumtemperatur-Waferbondverfahrens basierend auf integrierten und reaktiven nanoskaligen Multilagensystemen." Doctoral thesis, 2013. https://monarch.qucosa.de/id/qucosa%3A19994.

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Die vorliegende Arbeit beschreibt einen neuartigen Fügeprozess, das sogenannte reaktive Fügen bzw. Bonden. Hierbei werden sich selbsterhaltene exotherme Reaktionen in nanoskaligen Schichtsystemen als lokale Wärmequelle für das Fügen unterschiedlichster Substrate der Mikrosystemtechnik verwendet. Das Bonden mit den reaktiven Systemen unterscheidet sich von herkömmlichen Verfahren der Aufbau- und Verbindungstechnik primär dadurch, dass durch die rasche Reaktionsausbreitung bei gleichzeitig kleinem Reaktionsvolumen die Fügetemperaturen unmittelbar auf die Fügefläche beschränkt bleiben. Entgegen den herkömmlichen Fügeverfahren mit Wärmeeintrag im Volumen, schont das neue Verfahren empfindliche Bauteile und Materialien mit unterschiedlichsten thermischen Ausdehnungskoeffizienten lassen sich besser verbinden. In der vorliegenden Arbeit werden die Grundlagen zur Dimensionierung, Prozessierung und Integration der gesputterten reaktiven Materialsysteme beschrieben. Diese Systeme werden verwendet, um heterogene Materialien mit unterschiedlichen Durchmessern innerhalb kürzester Zeit auf Wafer-Ebene und bei Raumtemperatur zu bonden. Die so erzeugten Verbindungen werden hinsichtlich der Mikrostruktur, der Zuverlässigkeit sowie der Dichtheit untersucht und bewertet. Zusätzlich wird die Temperaturverteilung in der Fügezone während des Fügeprozesses mit numerischen Methoden vorhergesagt.
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Book chapters on the topic "Self-propagating exothermic reaction"

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"Characterization of self-propagating exothermic reaction in bimetallic Zr/Al reactive multilayer nanofoil." In Smarte Strukturen und Systeme, 320–29. De Gruyter Oldenbourg, 2016. http://dx.doi.org/10.1515/9783110469240-028.

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Conference papers on the topic "Self-propagating exothermic reaction"

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Zhang, Anna, Zheng Zhou, Wenbo Zhu, Liping Mo, and Fengshun Wu. "Si/Si bonding based on self-propagating exothermic reaction." In 2016 17th International Conference on Electronic Packaging Technology (ICEPT). IEEE, 2016. http://dx.doi.org/10.1109/icept.2016.7583334.

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Bach, Fr W., Z. Babiak, T. Duda, T. Rothgardt, and G. Tegeder. "Impact of Self Propagating High Temperature Synthesis of Spraying Materials on Coatings Based on Aluminium and Metal-Oxides." In ITSC2001, edited by Christopher C. Berndt, Khiam A. Khor, and Erich F. Lugscheider. ASM International, 2001. http://dx.doi.org/10.31399/asm.cp.itsc2001p0497.

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Abstract The properties of thermal sprayed coatings depend mainly on the thermal and kinetic energy of the spray particles. Increase of thermal energy of sprayed particles can be realized using exothermic reactions between components in sprayed particles. Self propagating high temperature synthesis (SHS) is especially suitable to benefit from released energy in the spraying process. At present most commonly used spray material with exothermal reaction is Ni+Al. However, the highest amount of heat is produced in the reactions of aluminium and metal oxides. Of special interest are Cr2O3, NiO, CuO and V2O5 because they obtain high reaction energies. Furthermore products of the reaction are of special, functional interest like NiAl as bonding agent or alumina as a wear resistant coating. To assure good contact between reacting substances (Al/Oxides) powders for plasma spraying were prepared by mechanical alloying. Calorimetric investigations of plasma sprayed coatings prove that during spraying Al reacts exothermically with oxides. Increase of oxide contents improves coating adhesion/ cohesion properties, hardness, and reduction of porosity. Results are discussed on the base of light microscopy, scanning electron microscopy (SEM) and X-ray structure analysis (XRD).
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Liu, Canyu, Han Jiang, Shuibao Liang, Allan Liu, Zhaoxia Zhou, and Changqing Liu. "Bonding with Zn-based solders through self-propagating exothermic reaction to enable high-temperature electronics packaging." In 2022 IEEE 24th Electronics Packaging Technology Conference (EPTC). IEEE, 2022. http://dx.doi.org/10.1109/eptc56328.2022.10013226.

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Swaminathan, Vinodh, Micheal J. Koczak, and Surya R. Kalidindi. "Simulation of Self-Propagating High-Temperature Synthesis Using Finite Element Method." In ASME 1997 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 1997. http://dx.doi.org/10.1115/imece1997-0652.

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Abstract Self-Propagating High-Temperature Synthesis (SHS) is an energy efficient process for the synthesis of refractory ceramics and intermetallic compounds, and composites of these materials including functionally gradient materials (FGMs). The process utilizes the large exothermic heat of reaction between two or more elements (or compounds) in order to convert the reactants into one or more useful products. The products of SHS, in general, have been observed to possess significant amounts of residual porosity. It has been reported that a certain amount of liquid phase during the reaction aids in the consolidation process. In order to control the amount of liquid formed during SHS, it is necessary to develop a good understanding of the parametric influence of the various process parameters such as pre-heat, dilution, heat losses, etc. on the SHS reaction. In this study, a commercial finite element program, ABAQUS (1996), has been used to simulate SHS and to study the effects of process parameters that influence and help control the reaction. Processing maps have been developed for Ni-Al system based on the FEA results that can aid in syntheses of nickel aluminides and FGMs using these compounds with low residual porosities.
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Hu, Sicong, Zheng Zhou, Hui Liu, Wenbo Zhu, and Fengshun Wu. "Study on the microstructure of Si/solder/Si joint based on Al/Ni self-propagating exothermic reaction." In 2017 18th International Conference on Electronic Packaging Technology (ICEPT). IEEE, 2017. http://dx.doi.org/10.1109/icept.2017.8046602.

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Ito, S., S. Inoue, and T. Namazu. "The size limit of Al/Ni multilayer rectangular cuboids for generating self-propagating exothermic reaction on a Si wafer." In 2013 Transducers & Eurosensors XXVII: The 17th International Conference on Solid-State Sensors, Actuators and Microsystems (TRANSDUCERS & EUROSENSORS XXVII). IEEE, 2013. http://dx.doi.org/10.1109/transducers.2013.6627170.

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Liang, Shuibao, Yi Zhong, Stuart Robertson, Allan Liu, Zhaoxia Zhou, and Changqing Liu. "Investigation of Thermo-mechanical and Phase-change Behavior in the Sn/Cu Interconnects during Self-Propagating Exothermic Reaction Bonding." In 2020 IEEE 70th Electronic Components and Technology Conference (ECTC). IEEE, 2020. http://dx.doi.org/10.1109/ectc32862.2020.00052.

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