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http://dx.doi.org/10.4191/KCERS.2006.43.3.193

Microstructure and Mechanical Properties of Alumina/Zirconia Layered Composites  

Lyu, Seung-Woo (School of Materials Science and Engineering, Pusan National University)
Park, Young-Min (School of Materials Science and Engineering, Pusan National University)
Yang, Tae-Young (School of Materials Science and Engineering, Pusan National University)
Ryu, Su-Chak (Department of Nano Information Materials Science and Engineering, Pusan National University)
Kim, Young-Woo (Functional Materials Research Team, Research Institute of Industrial Science and Technology)
Yoon, Seog-Young (School of Materials Science and Engineering, Pusan National University)
Park, Hong-Chae (School of Materials Science and Engineering, Pusan National University)
Publication Information
Journal of the Korean Ceramic Society / v.43, no.3, 2006 , pp. 193-197 More about this Journal
Abstract
Symmetric three-layer $Al_2O_3/ZrO_2$ composite has been prepared by freeze casting and pressureless sintering at $1400-1600^{\circ}C$ in air. The layered material sintered at $1600^{\circ}C$ showed the maximum fracture strength (410 MPa), measured by a four-point bending test. Contact damage strength was superior in three-layer composite compared with corresponding mono-layered material, possibly due to the development of relatively large compressive stress. The grain growth of $ZrO_2$ particles was mainly governed by coalescence mechanism.
Keywords
Symmetric three-layer $Al_2O_3/ZrO_2$ composite; Freeze casting;
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