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Deflection-Toughened Corundum-Rutile Composites

Published online by Cambridge University Press:  25 February 2011

Saburo Hori ,
Hisatsugu Kaji ,
Masahiro Yoshimura  and
Shigeyuki Sōmiya
Saburo Hori
Affiliation:
Kuraha Chemical Industry Co., Ltd., 16 Ochiai, Nishikimachi, Iwaki-Shi, Fukushima 974, Japan
Hisatsugu Kaji
Affiliation:
Kuraha Chemical Industry Co., Ltd., 16 Ochiai, Nishikimachi, Iwaki-Shi, Fukushima 974, Japan
Masahiro Yoshimura
Affiliation:
Research Laboratory of Engineering Materials, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-Ku, Yokohama 227, Japan
Shigeyuki Sōmiya
Affiliation:
Research Laboratory of Engineering Materials, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-Ku, Yokohama 227, Japan
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Abstract

Dense corundum-rutile composites containing plate-shaped corundum particles were prepared from the CVD Al2O3-TiO2 powders by adding a small amount of sodium and sintering below ˜1280°C. The fracture toughness increased up to 6.5 Mpa · ✓m and the increment of toughness was proportional to the volume % of plate-shaped corundum particles. The importance of tilt deflection and crack bowing rather than the twist deflection was suggested in this system.

Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 78: Symposium E – Advances in Structural Ceramics , 1986 , 283
Copyright
Copyright © Materials Research Society 1987

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References

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