上海交通大学学报

上海交通大学学报（自然版）

• 一般工业技术 • 上一篇    下一篇

Li5La3Ta2O12/Al基高阻尼复合材料的制备和阻尼性能

王先平1,2，王伟国2，李春1，程帜军2，方前锋1，2   

  1. （1.南昌航空大学 材料科学与工程学院， 南昌 330063；2.中国科学院 固体物理研究所材料物理重点试验室， 合肥 230031）
  • 收稿日期:2009-03-30 修回日期:1900-01-01 出版日期:2010-05-31 发布日期:2010-05-31

Preparation and Performance of Li5La3Ta2O12 Particulate Reinforced High Damping Aluminum Composites

WANG Xianping1,2，WANG Weiguo2，LI Chun1，CHENG Zhijun2，FANG Qianfeng1,2   

  1. (1.School of Material Science and Engineering, Nanchang Hangkong University, Nanchang 330063, China； 2.Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031, China）
  • Received:2009-03-30 Revised:1900-01-01 Online:2010-05-31 Published:2010-05-31

摘要： 采用粉末冶金法制备Li5La3Ta2O12/Al基陶瓷复合材料，并评价其阻尼性能、硬度和屈服强度.结果表明，复合材料的室温阻尼和力学性能较纯Al具有显著提高.当陶瓷颗粒质量分数为20%时，复合材料的室温内耗值可达0.010, 比相同温度范围内Al的内耗高约1个量级，对应的屈服强度和硬度值分别比Al提高约43%和28%.

关键词: 铝复合材料, 锂, 空位扩散, 阻尼性能

Abstract: The metal matrix ceramic composite,Li5La3Ta2O12/Al, was prepared by powder metallurgy method. It was found that the damping capacity and the mechanical properties of the composite at room temperature are greatly enhanced in comparison with the pure Al. The damping capacity of the 20%Li5La3Ta2O12/Al composite can reach 0.010, which is one order of magnitude higher than that of pure Al, and the corresponding yield strength and microhardness of the composite are 43% and 28% higher than those of pure Al, respectively.