|About this Abstract
||2010 TMS Annual Meeting & Exhibition
||Processing Materials for Properties
||Ignition Characteristics of Aluminum-Nickel Heterostructures Produced by Ultrasonic Powder Consolidation
||Dinc Erdeniz, David Colanto, Gokce Gulsoy, Teiichi Ando
|On-Site Speaker (Planned)
Al-Ni heterostructures were consolidated from elemental powders and nanoflakes by the application of ultrasonic vibrations to compacts kept under uniaxial loading. This ultrasonic powder consolidation (UPC) technique can produce powder consolidates at room to warm temperatures within a fraction of a second. Consolidation conditions were studied with Al and Ni powders and nanoflakes. The Al-Ni consolidates produced by UPC may be used as local heat sources in different fields of manufacturing. Therefore, their ignition characteristics and heat outputs were also investigated by differential thermal analysis and continuous-heating ignition tests. Results indicate that ignition is preceded by the solid-state reaction Al + Ni = Al<SUB>3</SUB>Ni which then catalyzes ignition through the formation of eutectic liquid between Al<SUB>3</SUB>Ni and Al.
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