caa a22 4500 388019778 CHVBK 20180307124920.0 cr unu---uuuuu 161130e199804 xx s 000 0 eng 10.1557/JMR.1998.0104 doi S0884291400043417 pii (NATIONALLICENCE)cambridge-10.1557/JMR.1998.0104 Sinterability of SiC powder coated uniformly with Al ions [Elektronische Daten] SiC particles coated uniformly with Al ions (0.25 mass% Al2O3) in an aluminum nitrate solution were consolidated by filtration through a gypsum mold. Hot-pressing in vacuum gave dense SiC (above 99% relative density) in the temperature range of 1900-1950 °C under a pressure of 39 MPa. The microstructures of dense SiC consisted of 2-5 μm grains of low aspect ratios (below 2). The fracture toughness and flexural strength of SiC increased gradually as the hot-pressing temperature became higher and were 4.3 Mpa m0.5 and 350 MPa, respectively, with hot-pressing at 1950 °C. Crack propagation in SiC shifted from intergrain to intragrain with increasing hot-pressing temperature. Copyright © Materials Research Society 1998 Sameshima Soichiro Department of Applied Chemistry and Chemical Engineering, Kagoshima University, 1-21-40 Korimoto, Kagoshima 890, Japan Miyano Keisuke Department of Applied Chemistry and Chemical Engineering, Kagoshima University, 1-21-40 Korimoto, Kagoshima 890, Japan Hirata Yoshihiro Department of Applied Chemistry and Chemical Engineering, Kagoshima University, 1-21-40 Korimoto, Kagoshima 890, Japan Journal of Materials Research Cambridge University Press 13/4(1998-04), 816-820 0884-2914 13:4<816 1998 13 JMR https://doi.org/10.1557/JMR.1998.0104 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1557/JMR.1998.0104 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Sameshima Soichiro Department of Applied Chemistry and Chemical Engineering, Kagoshima University, 1-21-40 Korimoto, Kagoshima 890, Japan NATIONALLICENCE 700 1- Miyano Keisuke Department of Applied Chemistry and Chemical Engineering, Kagoshima University, 1-21-40 Korimoto, Kagoshima 890, Japan NATIONALLICENCE 700 1- Hirata Yoshihiro Department of Applied Chemistry and Chemical Engineering, Kagoshima University, 1-21-40 Korimoto, Kagoshima 890, Japan NATIONALLICENCE 773 0- Journal of Materials Research Cambridge University Press 13/4(1998-04), 816-820 0884-2914 13:4<816 1998 13 JMR CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-cambridge