Combustion synthesis of reactive nickel-aluminum particles as an innovative approach for thermal joining applications

S. Schreiber, G. D. Theodossiadis, M. F. Zaeh

Research output: Contribution to journalConference articlepeer-review

10 Scopus citations

Abstract

Reactive systems, which are widely used in combustion synthesis, represent a promising solution for challenging joining tasks. They are able to undergo a self-sustaining, highly exothermic reaction when exposed to an external energy source. Reactive foils are the only systems that are currently commercially available. However, their industrial use is limited due to the brittle nature of the material and the restriction to planar geometries. Reactive particles represent a more flexible format, but are currently not commercially available. Therefore, a two-step electroless plating process has been developed to synthesize nickel-aluminum core-shell structures. These structures function as microreactors, which provide the energy for the thermal joining process. Ignition tests with electromagnetic waves were performed in order to investigate the overall reactivity. Energy input and particle size significantly influence the activation and the reaction behavior of the core-shell structures. Furthermore, a general approach to use reactive particles as a heat source in joining applications is proposed.

Original languageEnglish
Article number012008
JournalIOP Conference Series: Materials Science and Engineering
Volume181
Issue number1
DOIs
StatePublished - 17 Mar 2017
Event19th Chemnitz Seminar on Materials Engineering - Chemnitz, Germany
Duration: 16 Mar 201717 Mar 2017

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