Hardness and Fracture Toughness of SiC-Particle-Reinforced MoSi2 Composites

The indentation technique has been used to evaluate the hardness and fracture toughness of SiC‐reinforced MoSi2 composites made by hot‐pressing. It is seen that the toughness increases with increasing indentation crack length (under increasing load) and a probable mechanism responsible for this beha...

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Bibliographic Details
Published in:Journal of the American Ceramic Society 1991-10, Vol.74 (10), p.2700-2703
Main Authors: Bhattacharya, Arun K., Petrovic, John J.
Format: Article
Language:English
Subjects:
Applied sciences
Building materials. Ceramics. Glasses
Ceramic industries
Chemical industry and chemicals
Exact sciences and technology
fracture toughness
hardness
indentation
molybdenum disilicide
silicon carbide
Structural ceramics
Technical ceramics
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Summary:The indentation technique has been used to evaluate the hardness and fracture toughness of SiC‐reinforced MoSi2 composites made by hot‐pressing. It is seen that the toughness increases with increasing indentation crack length (under increasing load) and a probable mechanism responsible for this behavior is described. It is also observed that there is an optimum volume fraction of SiC particles for which the maximum fracture toughness of the composite can be achieved.
ISSN:0002-7820
1551-2916
DOI:10.1111/j.1151-2916.1991.tb06828.x