Mechanical and electromechanical properties of monoclinic ZrO2 fiber/PZT composites

被引：0

作者：

Takahashi, Minoru ^{[1
]}

Baba, Kazuyoshi ^{[1
]}

Nishizato, Osamu ^{[1
]}

Takamura, Akinobu ^{[1
]}

Katsube, Masayoshi ^{[1
]}

机构：

[1] Nagoya Inst of Technology, Tajimi-shi, Japan

来源：

Journal of the Ceramic Society of Japan. International ed. | 1994年 / 102卷 / 01期

关键词：

Bending strength - Casting - Crack propagation - Electric properties - Fibers - Fracture toughness - Mechanical properties - Microstructure - Permittivity - Sintering - Thermal expansion - Zirconia;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

Mechanical and electromechanical properties of mono-clinic ZrO2 fiber/PZT composites fabricated by slip casting and ordinary sintering were examined. Bending strength of the composites decreased by increasing the fiber content from 0 to 20vol%. However, the composite containing 5vol%ZrO2 fibers yielded a fracture toughness K1C of 1.4MPa &middot m 1/2 , 75% higher than that of PZT matrix. The measurement of thermal expansion and observation of microstructure suggest that microcracking, crack bowing and crack deflection contribute to the increase in K1C&middot Addition of ZrO2 fibers reduced both permittivity and coupling factor K31 of the composites. At 5vol%ZrO2, the K31 value of the composite was 25% lower than that of PZT matrix.

引用

页码：65 / 70

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