Effect of reactant and product melting on self-propagating reactions in multilayer foils

Etienne Besnoin*, Stefano Cerutti, Omar Knio, Timothy P. Weihs

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

99 Scopus citations

Abstract

The evolution of self-propagating reactions along nanostructured multilayer foils is analyzed computationally. A simplified physical model is used that combines a two-dimensional diffusion equation for the atomic concentration with a quasi-one-dimensional form of the energy equation which accounts for the melting of the reactants and products. The model thus generalizes previous formulations which have ignored melting effects. The computations are used to predict the evolution of self-propagating fronts in Ni/Al foils, and analyze the dependence of these fronts on the foil parameters. In particular, the results indicate that melting substantially affects the properties of the unsteady reactions, and generally results in an appreciable reduction of the average front speed.

Original languageEnglish (US)
Pages (from-to)5474-5481
Number of pages8
JournalJournal of Applied Physics
Volume92
Issue number9
DOIs
StatePublished - Nov 1 2002

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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