Obtaining NiAl intermetallic compound using different milling devices

Autor(es)

Kubaski, E. T. ^[1] ; Cintho, O. M. ^[2] ; Antoniassi, J. L. ^[3] ; Kahn, H. ^[3] ; Capocchi, J. D. T. ^[1]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Sch Engn, Dept Met & Mat Engn, BR-05508900 Sao Paulo - Brazil

^[2] Univ Estadual Ponta Grossa, Dept Mat Engn, BR-84030900 Ponta Grossa, PR - Brazil

^[3] Univ Sao Paulo, Sch Engn, Dept Min & Petr Engn, BR-05508030 Sao Paulo - Brazil

• Tipo de documento: Artigo Científico
• Fonte: ADVANCED POWDER TECHNOLOGY; v. 23, n. 5, p. 667-672, SEP 2012.
• Citações Web of Science: 10

Resumo

NiAl intermetallic compound was synthesized by mechanical alloying technique in planetary and attritor mills. The starting powders consisted of elemental mixtures of Ni and Al at Ni50Al50(at%) composition. In the planetary mill, compound formation occurred gradually during mechanical alloying, while the occurrence of a mechanically induced self-propagating reaction (MSR) can be suggested in the attritor mill. The NiAl obtained in both mill types was partially disordered with long-range order parameter not inferior to 0.66. Quantitative phase analysis using the Rietveld method was performed in as-milled samples, and this method was also employed to estimate changes in crystallite size and lattice strain of the NiAl produced during mechanical alloying. (C) 2011 The Society of Powder Technology Japan. Published by Elsevier B.V. and The Society of Powder Technology Japan. All rights reserved. (AU)

• Processo FAPESP: 07/50954-0 - Caracterizacao do composto nial obtido utilizando mecano-sintese.
• Beneficiário: Jose Deodoro Trani Capocchi
• Modalidade de apoio: Auxílio à Pesquisa - Regular