TY - JOUR
T1 - Erosion response of highly anisotropic silicon nitride
AU - Zhang, Yu
AU - Cheng, Yi Bing
AU - Lathabai, Srinivasarao
AU - Hirao, Kiyoshi
PY - 2005/1
Y1 - 2005/1
N2 - The erosion rates and impact damage of two sintered Si 3N 4 materials with identical compositions but different microstructures were determined using a gas-blast-type erosion rig. The erodent particles used were SiC grits and the impact angles investigated were 30° and 90°. It was found that the erosion behavior of the two materials could not be related to their mechanical properties, such as hardness and fracture toughness as predicted by the theoretical erosion models. In fact, a close relationship was identified between their microstructure and the erosion mechanism. Microstructures containing evenly dispersed and uniaxially oriented reinforcing whiskers promoted grain-pullout, while the randomly oriented elongated grains hindered it.
AB - The erosion rates and impact damage of two sintered Si 3N 4 materials with identical compositions but different microstructures were determined using a gas-blast-type erosion rig. The erodent particles used were SiC grits and the impact angles investigated were 30° and 90°. It was found that the erosion behavior of the two materials could not be related to their mechanical properties, such as hardness and fracture toughness as predicted by the theoretical erosion models. In fact, a close relationship was identified between their microstructure and the erosion mechanism. Microstructures containing evenly dispersed and uniaxially oriented reinforcing whiskers promoted grain-pullout, while the randomly oriented elongated grains hindered it.
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U2 - 10.1111/j.1551-2916.2004.00014.x
DO - 10.1111/j.1551-2916.2004.00014.x
M3 - Article
AN - SCOPUS:27644482450
SN - 0002-7820
VL - 88
SP - 114
EP - 120
JO - Journal of the American Ceramic Society
JF - Journal of the American Ceramic Society
IS - 1
ER -