KIM, YW LEE, JG 2024-01-21T23:06:10Z 2024-01-21T23:06:10Z 2022-01-11 1992-09-01 0022-2461 https://pubs.kist.re.kr/handle/201004/146381 Silicon carbide ceramics containing 20 wt % polycarbosilane was fabricated by hot-pressing with various additives (B, Al, AlN). The addition of polycarbosilane resulted in a considerable increase in flexural strength up to 1050 MPa for the 1 wt % AlN and 0.5 wt % B-doped specimens and fracture toughness up to 4.0 M Pa m1/2 for the 1 wt % Al-doped specimen. The improved fracture strength was a result of liquid-phase sintering and the improved toughness was a result of crack deflection along the grain boundaries. Crack branching was also observed in 1 wt% AlN and 0.5 wt% B-doped specimens. English CHAPMAN HALL LTD EFFECT OF POLYCARBOSILANE ADDITION ON MECHANICAL-PROPERTIES OF HOT-PRESSED SILICON-CARBIDE Article 10.1007/BF01166016 1 JOURNAL OF MATERIALS SCIENCE, v.27, no.17, pp.4746 - 4750 JOURNAL OF MATERIALS SCIENCE 27 17 4746 4750 scie scopus A1992JM31200030 2-s2.0-0000350304 Materials Science, Multidisciplinary Materials Science Article