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氧化铈掺杂氧化锆的等温和非等温马氏体相变(英文)

Isothermal and athermal martensitic transformations of ceria doped zirconia

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【作者】 音田哲彦； 原纯平； 陈中春； 早川元造；

【Author】 Tetsuhiko Onda1, Junpei Hara2, Zhong Chun-Chen1 , Motozo Hayakawa3(1.Department of Mechanical and Aerospace Engineering, Tottori University, Tottori,680-8552, Japan;2.Graduate Student of Mechanical and Aerospace Engineering, Tottori University: Present address: Sumitomo Electric Sintered Alloy Ltd., Takahashi, 716-0192, Japan; 3.Professor Emeritus at Tottori University, Tottori,680-8552, Japan.)

【机构】 日本鸟取大学； Graduate Student of Mechanical and Aerospace Engineering,Tottori University； Sumitomo Electric Sintered Alloy Ltd.；

【摘要】 Martensitic transformation behavior was studied for zirconia containing 4%～10% CeO2 (in mole fraction) by using a dilatometric method. The Ms (Martensite start temperature) decreased near linearly with increasing CeO2. Different transformation modes were observed depending on the composition and cooling rate. ZrO2 containing 6% CeO2 showed isothermal transformation behavior, whereas ZrO2 containing 9% and 10% CeO2 showed athermal transformation behavior. However, ZrO2 containing 8% CeO2 showed either isothermal or athermal transformations behavior depending on the cooling rate. A TTT (Time-Temperature-Transformation) diagram was proposed for ZrO2 containing 8% CeO2.

【Abstract】 Martensitic transformation behavior was studied for zirconia containing 4%～10% CeO2 (in mole fraction) by using a dilatometric method. The Ms (Martensite start temperature) decreased near linearly with increasing CeO2. Different transformation modes were observed depending on the composition and cooling rate. ZrO2 containing 6% CeO2 showed isothermal transformation behavior, whereas ZrO2 containing 9% and 10% CeO2 showed athermal transformation behavior. However, ZrO2 containing 8% CeO2 showed either isothermal or athermal transformations behavior depending on the cooling rate. A TTT (Time-Temperature-Transformation) diagram was proposed for ZrO2 containing 8% CeO2.

【关键词】 martensitic transformation； ceria doped zirconia； isothermal transformation； athermal transformation； thermally activated process； burst type transformation；
【Key words】 martensitic transformation； ceria doped zirconia； isothermal transformation； athermal transformation； thermally activated process； burst type transformation；
  • 【文献出处】 材料与冶金学报 ,Journal of Materials and Metallurgy , 编辑部邮箱 ,2010年03期
  • 【分类号】TG111.5
  • 【被引频次】5
  • 【下载频次】129
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