ISSN:
1573-4803
Source:
Springer Online Journal Archives 1860-2000
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Abstract The fracture toughness,K Ic, for a hot-pressed SiC and three types of reaction-bonded SiC has been measured using the Hertzian indentation technique with spherical indentors whose radii varied from 2.5 to 10 mm. Excellent agreement between the toughness measured by this technique and the publishedK Ic value measured using double torsion is obtained for the hot-pressed SiC. The Vickers hardness,H, which was also measured, andK Ic have been used to predict the solid-particle erosion rate, ΔW, given by ΔW ∞H a K c b where the values of the exponentsa andb depend on the details of the erosion model. The predicted rates are not in agreement with the measured rates. This discrepancy is probably due to the fact that the models are insensitive to microstructure.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01111969
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