In situ thermal observation of explosive compound-formation reaction during mechanical alloying

The formation of Al-Ni compounds by ball milling of elemental powders has been investigated by means of in situ thermal analysis, X-ray diffraction, and scanning electron microscopy. The results show that AlNi forms in an explosive, exothermic reaction, driven by the large heat of compound formation...

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Veröffentlicht in:	Physical review letters 1990-01, Vol.64 (4), p.487-490
1. Verfasser:	ATZMON, M
Format:	Artikel
Sprache:	eng
Schlagworte:	Applied sciences Cross-disciplinary physics: materials science rheology Exact sciences and technology Materials science Metal powders Metals, semimetals and alloys Metals. Metallurgy Physics Powder metallurgy. Composite materials Production techniques Specific materials
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Zusammenfassung:	The formation of Al-Ni compounds by ball milling of elemental powders has been investigated by means of in situ thermal analysis, X-ray diffraction, and scanning electron microscopy. The results show that AlNi forms in an explosive, exothermic reaction, driven by the large heat of compound formation. The mechanism discovered is suggested to explain the mechanical alloying of other systems. (Author)
ISSN:	0031-9007 1079-7114
DOI:	10.1103/PhysRevLett.64.487