Influence of WSi2 content and additions of magnesium alumosilicates on oxidation and strength properties of MoSi2-WSi2 composites

Samples of MoSi 2 -WSi 2 composite materials with additions of magnesium alumosilicates are obtained by solid phase sintering at 1650–1800°C in an argon atmosphere of powdered mixtures of initial components and disintegrated cast samples of 70% MoSi 2 –30% WSi 2 (Mo 0.7 W 0.3 Si 2 ), synthesized in...

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Bibliographic Details
Published in:Inorganic materials : applied research 2013, Vol.4 (1), p.66-70
Main Authors: Titov, D. D., Kargin, Yu. F., Lysenkov, A. S., Popova, N. A., Gorshkov, V. A.
Format: Article
Language:English
Subjects:
Chemistry
Chemistry and Materials Science
Industrial Chemistry/Chemical Engineering
Inorganic Chemistry
Materials Science
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Summary:Samples of MoSi 2 -WSi 2 composite materials with additions of magnesium alumosilicates are obtained by solid phase sintering at 1650–1800°C in an argon atmosphere of powdered mixtures of initial components and disintegrated cast samples of 70% MoSi 2 –30% WSi 2 (Mo 0.7 W 0.3 Si 2 ), synthesized in an SHS reactor. The influence of the content of tungsten and oxide additive on oxidation of samples in air at 750°C for 100 h is studied. It is found that 70% MoSi 2 –30% WSi 2 composite materials are less exposed to oxidation than MoSi 2 and WSi 2 , and addition of 20 vol % magnesium alumosilicates decreases the rate of low temperature oxidation.
ISSN:2075-1133
2075-115X
DOI:10.1134/S2075113313010115