Stationary self-propagation combustion with variations in the total layer thickness of compression-bonded Ni-sputtered Al foil multilayers
2015
Abstract Mechanically bonded Al/Ni multilayers have numerous applications such as high temperature bonding and local heat sources if their stable self-propagation high temperature synthesis is controllable. In this study, stationary self-propagating reactions in Al/Ni multilayers are obtained through controlling the total layer thickness using micrometer-scale bilayer thicknesses. While stationary self-propagation is not obtained in multilayers with total layer thicknesses of 180–360 μm, it is consistently observed in multilayers with total layer thicknesses of 630–810 μm. The total layer thickness influenced the consistency of the propagation velocity of the combustion reactions in the compression-bonded Ni-sputtered Al foil multilayers. The minimum total layer thickness for a stationary propagation is identified as between 540 and 630 μm in the Al/Ni multilayers.
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