Authors: Itatani, Kiyoshi¹; Tanaka, Tsuyoshi¹; Davies, Ian J.²; Aizawa, Mamoru¹; Okada, Isao¹; Suemasu, Hiroshi³; Nozue, Akira⁴

Source: International Journal of Materials and Product Technology, Volume 16, Numbers 1-2, 1 October 2004 , pp. 239-247(9)

Publisher: Inderscience Publishers

Abstract:

Silicon carbide (SiC) ceramics reinforced with 10&#8764;50 mass% of chopped Si-Al-C fibre (average length; 394µm) and 5 mol% of A1<SUB align=right>4C<SUB align=right>3 as a sintering aid were fabricated by hot pressing at 1800°C for 30 min under a pressure of 31 MPa. The hot-pressed SiC compact with 40 mass% of chopped Si-Al-C fibre addition showed a maximum relative density (96.8%) among the specimens examined and a Vickers hardness (H<SUB align=right>v) of 28.3 GPa. The highest fracture toughness (K<SUB align=right>IC) (3.9 MPa • m<SUP align=right>1/2</SUP>) was achieved at 30 mass% of Si-Al-C fibre addition. These H<SUB align=right>v and K<SUB align=right>IC values were higher than those (H<SUB align=right>v ;17.0 GPa and K<SUB align=right>IC 2.1 MPa • m<SUP align=right>1/2

Keywords: TECHNICAL JOURNALS; Design and Product Development; Materials and Manufacturing

Document Type: Research article

DOI: http://dx.doi.org/10.1504/IJMPT.2001.005436

Affiliations: 1: Department of Chemistry, Sophia University, 7-1 Kioi-cho, Chiyoda-ku, Tokyo 102-8554, Japan. 2: Advanced Fibro-Science, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan. 3: Department of Mechanical Engineering, Sophia University, 7-1 Kioi-cho, Chiyoda-ku, Tokyo 102-8554, Japan. 4: Department of Mechanical Engineering, Sophia University, 7-1 Kioi-cho, Chiyoda-ku, Tokyo 102-8554, Japan

Publication date: 2004-10-01

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