Damping properties of Li5La3Ta2O12 ceramic particulates reinforced cement composites
Damping properties of Li5La3Ta2O12 ceramic particulates reinforced cement composites
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DOI：
10.1016/j.msea.2010.09.082
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发表时间：
2010-12
期刊：
影响因子：
6.4
通讯作者：
Z. Kan;C. Li;Xuejiang Wang;Huifen Lu;Q. Fang
中科院分区：
文献类型：
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作者：
Z. Kan;C. Li;Xuejiang Wang;Huifen Lu;Q. Fang
本文提出了一种设计水泥基复合材料的新概念，该复合材料在室温下具有高阻尼能力和良好的机械性能。将室温下具有高阻尼能力的硬质Li5La3Ta2O12陶瓷颗粒作为添加剂嵌入水泥基体中形成复合材料。 Li5La3Ta2O12/水泥复合材料的阻尼能力（内摩擦）和抗压强度随着Li5La3Ta2O12浓度在0-25wt%范围内的增加而增加。 25wt%Li5La3Ta2O12/水泥复合材料在 46°C 和 1Hz 下获得了高达 0.015 的最大阻尼能力。 10wt%Li5La3Ta2O12/水泥复合材料的抗压强度和抗弯强度分别比纯水泥高约40%和5%。
In this paper a novel concept to design cement matrix composites that exhibit high damping capacity as well as good mechanical performance around room temperature was suggested. The hard Li5La3Ta2O12ceramic particulates with high damping capacity at room temperature were embedded as additives into cement matrix to form the composite materials. The damping capacity (internal friction) and compressive strength of the Li5La3Ta2O12/cement composites increase with increasing Li5La3Ta2O12concentration in the range of 0–25wt%. The maximum damping capacity as high as 0.015 was obtained in a 25wt%Li5La3Ta2O12/cement composite at 46°C and 1Hz. The compressive and flexural strength of the 10wt%Li5La3Ta2O12/cement composites is about 40% and 5% higher than those of the pure cement, respectively.