The Thermal Explosion Synthesis of AlNi Monitored by Neutron Thermodiffractometry

Turrillas Maisterra, Javier Miguel and Mas-Guindal, M.J. and Hansen, T.C. and Rodríguez, M.A. (2010). The Thermal Explosion Synthesis of AlNi Monitored by Neutron Thermodiffractometry. "Acta Materialia", v. 58 (n. 7); pp. 2769-2777. ISSN 1359-6454. https://doi.org/10.1016/j.actamat.2010.01.013.

Description

Title: The Thermal Explosion Synthesis of AlNi Monitored by Neutron Thermodiffractometry
Author/s:
  • Turrillas Maisterra, Javier Miguel
  • Mas-Guindal, M.J.
  • Hansen, T.C.
  • Rodríguez, M.A.
Item Type: Article
Título de Revista/Publicación: Acta Materialia
Date: January 2010
ISSN: 1359-6454
Volume: 58
Subjects:
Freetext Keywords: Nickel aluminides; Neutron diffraction; Nucleation and growth; Thermodiffraction
Faculty: Centro de Seguridad y Durabilidad Estructural de Materiales (CISDEM) (UPM)
Department: Otro
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

The synthesis of AlNi from thermally activated equimolar powder mixtures of aluminium and nickel was monitored in situ and acquired diffraction patterns every 2 s or less. The analysis of diffraction patterns permitted establishment of its kinetics, which could be modeled according to an equation expressed as kt=[α/(1-α)]3/2. From 1530 to an activation energy of 9 ± 2 kJ mol−1 was estimated. Also, the crystallite size evolution on cooling was established to vary from ≈14 nm at 1530 °C to ≈28 nm at 180 °C. Finally, the reaction was found to occur through the melting of aluminium and the subsequent dissolving of nickel to form the polycrystalline single-phase product, AlNi.

More information

Item ID: 8754
DC Identifier: http://oa.upm.es/8754/
OAI Identifier: oai:oa.upm.es:8754
DOI: 10.1016/j.actamat.2010.01.013
Official URL: http://www.sciencedirect.com/science/article/pii/S1359645410000273
Deposited by: Memoria Investigacion
Deposited on: 29 Sep 2011 11:02
Last Modified: 20 Apr 2016 17:25
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