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Effects of tungsten and aluminum additions on the formation of molybdenum disilicide by mechanically-induced self-propagating reaction
School of Materials Science and Engineering, China University of Mining and Technology, Xuzhou.
School of Materials Science and Engineering, China University of Mining and Technology, Xuzhou.
Department of Metallurgical and Materials Engineering, University of Engineering and Technology, Lahore.ORCID iD: 0000-0003-4888-6237
School of Materials Science and Engineering, China University of Mining and Technology, Xuzhou.
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2010 (English)In: Journal of Alloys and Compounds, ISSN 0925-8388, E-ISSN 1873-4669, Vol. 490, no 1, p. 388-392Article in journal (Refereed) Published
Abstract [en]

The effects of tungsten and aluminum additions to Mo–Si system on the formation of MoSi2 by mechanically-induced self-propagating reaction in a high-energy ball mill were investigated by X-ray diffraction. The incubation time for mechanically-induced self-propagating reaction to form MoSi2 was 90 min in Mo–Si system. With the addition of tungsten to Mo–Si system, the incubation time of mechanically-induced self-propagating reaction of (Wx,Mo1−x)Si2 system was prolonged. It was due to the decrease of adiabatic temperature with increase in x, and the mechanically-induced self-propagating reaction was not observed until 150 min of high-energy milling in (Wx,Mo1−x)Si2 powder sample with x equals to 0.4. Conversely, the minor aluminum (y < 0.2 in Mo(Si1−y,Aly)2 system) substituting for silicon had shorten the incubation period and accelerated the reaction. When tungsten and aluminium were added simultaneously to Mo–Si system, the mechanically-induced self-propagating reaction was observed in (W0.1,Mo0.9)(Si0.9,Al0.1)2 sample, but it was not observed in (W0.2,Mo0.8)(Si0.8,Al0.2)2 and (W0.3,Mo0.7)(Si0.7,Al0.3)2 samples.

Place, publisher, year, edition, pages
2010. Vol. 490, no 1, p. 388-392
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Other Materials Engineering
Research subject
Engineering Materials
Identifiers
URN: urn:nbn:se:ltu:diva-7165DOI: 10.1016/j.jallcom.2009.09.189Local ID: 57d78e36-c0cb-40da-b79c-51506fc63af7OAI: oai:DiVA.org:ltu-7165DiVA, id: diva2:980053
Note
Upprättat; 2010; 20150416 (farakh)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2017-11-24Bibliographically approved

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