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Microstructure Development and Mechanical Properties of Ce-TZP/La- β-Alumina Composites

Published online by Cambridge University Press:  15 February 2011

Takashi Fujii ,
Hironobu Muragaki ,
Hiraku Hatano  and
Shin-Ichi Hirano
Takashi Fujii
Affiliation:
Technical Research Center, Nisshin Flour Milling Co., Ltd., 5-3-1 Tsurugaoka, Oi-machi, Saitama 354, Japan
Hironobu Muragaki
Affiliation:
Technical Research Center, Nisshin Flour Milling Co., Ltd., 5-3-1 Tsurugaoka, Oi-machi, Saitama 354, Japan
Hiraku Hatano
Affiliation:
Technical Research Center, Nisshin Flour Milling Co., Ltd., 5-3-1 Tsurugaoka, Oi-machi, Saitama 354, Japan
Shin-Ichi Hirano
Affiliation:
School of Eng., Nagoya Univ., Furo-cho, Chikusa-ku, Nagoya 464, Japan
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Abstract

Simultaneous additions of lanthanum aluminate(LAL) and Al2O3 to Ce-TZP (12mol% CeO2-ZrO2) lead to the in-situ formation of lanthanum- β-alumina(LBA) platelets (∼1.0.μ m in width and 5 ∼10 μ m in length) in the Ce-TZP matrix during sintering. The composites showed a fracture toughness(SEPB method) of 9.5 MPa · m0.5 and fracture strength of 960 MPa. which are remarkably improved from Ce-TZP sintered body (8.5 MPa · m0.5 and 560 MPa).

The composites also exhibit the no degradation by hydrothermal treatment.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 274: Symposium R – Submicron Multiphase Materials , 1992 , 141
Copyright
Copyright © Materials Research Society 1992

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References

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