TY - JOUR
T1 - Preparation, microstructure, and mechanical properties of silicon carbide-dysprosia composites
AU - Kim, Shin
AU - Kriven, Waltraud M.
PY - 1997/12
Y1 - 1997/12
N2 - Composites of silicon carbide (SiC) with up to 30 vol% of dysprosia (Dy2O3) were fabricated by hot pressing and hot isostatic pressing. The effects of Dy2O3 dispersions on the microstructure and on selected mechanical properties of the composites were investigated. When 10-15 vol% of Dy2O3 was dispersed in the SiC matrix, the fracture toughness increased by -40%, whereas the flexural strength was comparable to that of unreinforced SiC. The increased fracture toughness was due to crack, deflection, in conjunction with crack-interface grain bridging, and was not related to a phase transformation of Dy2O3 in the matrix.
AB - Composites of silicon carbide (SiC) with up to 30 vol% of dysprosia (Dy2O3) were fabricated by hot pressing and hot isostatic pressing. The effects of Dy2O3 dispersions on the microstructure and on selected mechanical properties of the composites were investigated. When 10-15 vol% of Dy2O3 was dispersed in the SiC matrix, the fracture toughness increased by -40%, whereas the flexural strength was comparable to that of unreinforced SiC. The increased fracture toughness was due to crack, deflection, in conjunction with crack-interface grain bridging, and was not related to a phase transformation of Dy2O3 in the matrix.
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U2 - 10.1111/j.1151-2916.1997.tb03225.x
DO - 10.1111/j.1151-2916.1997.tb03225.x
M3 - Article
AN - SCOPUS:0031381925
SN - 0002-7820
VL - 80
SP - 2997
EP - 3008
JO - Journal of the American Ceramic Society
JF - Journal of the American Ceramic Society
IS - 12
ER -