炭化チタンウイスカー/アルミナ系複合体の機械的性質,耐酸化性及び切削性能に対するウイスカー径の影響

概要

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Alumina matrix composites mixed with titanium carbide whiskers up to 30 vol% were fabricated by hotpressing at 1600℃ under 30 MPa for 30 min. Two kinds of titanium carbide whiskers having different diameters were used as a reinforcing agent. Mechanical properties, oxidation resistance and cutting perfomance for cast iron were studied. The addition of thin whiskers had a tendency to obstruct the densification of composite body. However, bending strengths at room temperature and 1000℃ and oxidation resistance of the composites containing thin whiskers were higher than those of the composites containing thick whiskers. On the other hand, no remarkable difference in Vickers hardness and fracture toughness was observed concerning to the effect on the whisker diameter. The composites containing thin Whiskers showed the cutting performance superior to those containing thick whiskers.
社団法人日本セラミックス協会の論文
1996-09-01