Pressureless Sintering and Properties of Titanium Diboride Ceramics Containing Chromium and Iron

Journal of the American Ceramic Society - Tập 84 Số 4 - Trang 893-895 - 2001
Shin Hyuk Kang1, Deug J. Kim1,2, Eul Son Kang3, Seung Soo Baek3
1Department of Materials Engineering, Sung Kyun Kwan University, 300 Chunchun–dong, Jangan-gu, Suwon, 440–746, Korea
2*Member, American Ceramic Society.
3Agency for Defense Development, Yuseoung, Taejon, 305–600, Korea

Tóm tắt

The simultaneous addition of 0.5 wt% Cr and Fe was found to enhance the densification of TiB2. The densities of specimens that were sintered for 2 h at 1800° and 1900°C were 97.6% and 98.8% of the theoretical value, respectively. The mechanical properties of the specimen sintered at 1800°C, which had a strength of 506 MPa and a fracture toughness of 6.16 MPa·m1/2, were much better than those observed in the specimen sintered at 1900°C.

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