Exothermic Reactions in AlNi Foils Produced by Rolling Powders

Abstract:

The possibility of manufacturing multilayer reaction foils of the Al-Ni system by rolling a powder mixture is considered. The sequence and temperatures of phase transformations during heating was established by the differential thermal analysis and X-ray phase analysis. The formation of the intermetallic compounds in the foils fabricated via rolling just mixed powder occurs only when a liquid phase appears (660°C). However, the foils fabricated from mechanically activated powders exhibit significant exothermic effect at temperature of 320°C unnecessarily for a liquid phase formation and can be proposed as a multilayer reactional foils for local heating in the technology of joining of various materials.

• Periodical: Key Engineering Materials (Volume 941)
• Pages: 123-127
• DOI: https://doi.org/10.4028/p-w41051
• Online since: March 2023
• Authors: Sergey Anatolyevich Kotov, F.A. Yunusov, A.A. Kiryanov, Tatiana V. Larionova*
• Keywords: Differential Thermal Analysis, Mechanical Activation, Self-Propagating High-Temperature Synthesis, X-Ray Diffraction

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