| Ce—Y—TZP陶瓷中的马氏体相变与形状记忆效应 |
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| 引用本文： | 张玉龙,金学军,徐祖耀,张玉峰,施剑林.Ce—Y—TZP陶瓷中的马氏体相变与形状记忆效应[J].上海交通大学学报,2001,35(3):385-388. |
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| 作者姓名： | 张玉龙 金学军 徐祖耀 张玉峰 施剑林 |
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| 作者单位： | 1. 上海交通大学材料科学与工程学院,
2. 中国科学院上海硅酸盐研究所, |
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| 基金项目： | 美国Emerson电气公司资助项目 |
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| 摘 要： | 用共沉淀法制备了8mol?O2-0.25mol%Y2O3-ZrO2(8Ce-0.25Y-TZP)、8Ce-0.50Y-TZP和8Ce-0.75Y-TZP3种成分的超细粉，于1500℃分别烧结2、3、6h成形。8Ce-0.25Y-TZP的马氏体相变开始温度Ms在室温以上，室温下基本上不具有形状记忆效应；8Ce-0.50Y-TZP的形状记忆效应最佳，其中烧结6h的试样最大可恢复应变为1.18%；8Ce-0.75Y-TZP的形状记忆效应较差。Ms与材料的强度密切相关，晶粒大小和密度等也有影响。
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| 关 键 词： | 形状记忆效应 马氏体相变 陶瓷 四方氧化锆多晶 铈 钇 TZP 强度 |
| 文章编号： | 1006-2467(2001)03-0385-04 |
| 修稿时间： | 2000年6月6日 |
Martensitic Transformation
and Shape Memory Effect in Ce-Y-TZP Ceramics |
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| ZHANG Yu-long,JIN Xue-jun,XU Zu-yao,ZHANG Yu-feng,SHI Jian-lin.Martensitic Transformation
and Shape Memory Effect in Ce-Y-TZP Ceramics[J].Journal of Shanghai Jiaotong University,2001,35(3):385-388. |
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| Authors: | ZHANG Yu-long JIN Xue-jun XU Zu-yao ZHANG Yu-feng SHI Jian-lin |
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| Institution: | ZHANG Yu long 1,JIN Xue jun 1,XU Zu yao |
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| Abstract: | Superfine powders with compositions 8 mol％CeO2-0. 25 mol％Y2O3-ZrO2 (8Ce-0. 25Y-TZP), 8Ce-0.50Y-TZP and 8Ce-0. 75Y-TZP were prepared by the coprecipitation method and sintered at 1 500℃ for 2,3 and 6 hours respectively. 8Ce-0. 25Y-TZP having martensitic transformation temperatures (Ms) above room temperature does not exhibit shape memory effect (SME) at ambient temperature. 8Ce0.50Y-TZP shows the best SME, and the largest recoverable strain of 1.18％ in the specimens sintered at 1 500℃ for 6 hours was attained. The Ms of the material is closely related to its strength, and other factors such as grain size and density also have influence on the Ms. |
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| Keywords: | shape memory effect martensitic transformation ceramics |
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