首页|Effects of CeO_2 on the Mechanical Property and Microstructure of 3Y-TZP Nanocomposite Ceramic Die Material
Effects of CeO_2 on the Mechanical Property and Microstructure of 3Y-TZP Nanocomposite Ceramic Die Material
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Trans Tech Publications Ltd
Thermal stability and wear resistance of nanoceramic materials are excellent, so it is an ideal die material and has become one of the increasingly important topics in the field of die research. A new 3Y-TZP nanocomposite die material was prepared with hot pressing technique by using 3Y-TZP, CeO_2, Al_2O_3 and nanometer sized TiC as raw materials. Effects of CeO_2 on the mechanical property and microstructure of 3Y-TZP nanocomposite die material were investigated. The addition of CeO_2 has obvious effect on the flexural strength and fracture toughness. When the content of CeO_2 is 2mol%, the fracture toughness of the composite material reaches 11.22MPa·m~(1/2). With the increase of CeO_2 content, the fracture toughness becomes lower, the flexural strength and hardness first increase and then decrease. When the CeO_2 content is 6mol%, the maximum flexural strength reaches 866MPa. The reason for the improvement of mechanical property can be attributed to the effect of CeO_2 on the phase transformation of t-ZrO_2 and microstructure and the resulted phase transformation toughening mechanism.
3Y-TZPnanocomposite ceramic die materialmechanical propertymicrostructure
Zhao Shikui、Xu Chonghai
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School of Mechanical Engineering, Shandong Institute of Light Industry, Jinan 250353, China
School of Mechanical Engineering, Shandong Institute of Light Industry, Jinan 250353, China School of Mechanical Engineering, Shandong University, Jinan 250061, China
NETL
NSTL
Trans Tech Publications Ltd
