Abstract
Erosion rates of SiC-Al2OC ceramics, with Al2OC content varying from 5 to 75wt%, were assessed using 240-grit alumina abrasive particles accelerated to a velocity estimated at 120msec−1 and impacting the target at normal incidence. The target ceramics varied in hardness from 27.1 GPa for SiC-5wt% Al2OC to 10.8 GPa for SiC-75wt% Al2OC, but the fracture toughness was essentially independent of composition (K lc ã 3.5 MPa m1/2). The erosion weight loss varied linearly with the test duration for all the ceramics and the erosion rate decreased systematically with increasing target hardness; the hardness dependence of the erosion rate was, however, much greater than the predictions of the currently available erosion models.
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Gochnour, S., Bright, J.D., Shetty, D.K. et al. Solid particle erosion of SiC-Al2OC ceramics. J Mater Sci 25, 3229–3235 (1990). https://doi.org/10.1007/BF00587679
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DOI: https://doi.org/10.1007/BF00587679