A study of the effect of aluminum on MoSi2 formation by self-propagation high-temperature synthesis

被引：17

作者：

Hasani, S. ^{[1
]}

Panjepour, M. ^{[1
]}

Shamanian, M. ^{[1
]}

机构：

[1] Isfahan Univ Technol, Dept Mat Engn, Esfahan 8415683111, Iran

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2010年 / 502卷 / 01期

关键词：

Combustion synthesis; MoSi2; formation; Self-propagation high-temperature synthesis; Aluminum; The oxidation of aluminum; IN-SITU SYNTHESIS; COMBUSTION SYNTHESIS; COMPOSITES; AL;

D O I：

10.1016/j.jallcom.2010.04.159

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

In this study, the self-propagation high-temperature synthesis (SHS) for the formation of MoSi2 in the presence of aluminum was investigated. Test specimens with nominal compositions including (Mo + 2Si) with stoichiometric ratio and (Mo + 2Si)+ 5 wt% Al were employed. Each of the different samples was tested for SHS to determine the thermal profile and differential thermal analysis (DTA) under air atmosphere. The registered thermal profiles resulted for the two samples showed the maximum temperature increase (about 400 degrees C) in the combustion front in the presence of aluminum. The DTA results also showed that the area of silicon melting point on the DTA curve was deleted in the presence of aluminum. On the other hand, the X-ray diffraction (XRD), scanning electron microscope (SEM) and energy dispersive spectrometer (EDS) studies indicated that the SHS reaction between Mo and Si was done in a more complete manner in the presence of aluminum and aluminum particles were all oxidized. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：80 / 86

页数：7

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