Enhanced thermoelectric effect of carbon fiber reinforced cement composites by metallic oxide/cement interface

Enhanced thermoelectric effect of carbon fiber reinforced cement composites by metallic oxide/cement interface
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金属氧化物/水泥界面增强碳纤维增强水泥复合材料的热电效应

DOI:
10.1016/j.ceramint.2014.01.024
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发表时间:
2014-07
影响因子:
5.2
通讯作者:
Yang, Chunli
Yang, Chunli
中科院分区:
材料科学1区
文献类型:
--
作者:
Wei, Jian(魏剑);Hao, Lei;He, Geping;Yang, Chunli

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金属氧化物微粒首次有效地提高了碳纤维水泥基复合材料的热电功率。复合材料的绝对塞贝克系数随金属氧化物含量的增加而稳定增加,达到原始材料的4-5倍。具有5.0 wt% Bi 2 O3微粒的复合材料获得了+100.28 µV/°C的最大绝对热电功率。氧化物微粒与水泥基体之间界面的载流子散射可能归因于Seebeck效应的增强。
Thermoelectric power of carbon fiber reinforced cement composites was firstly enhanced efficiently by metallic oxide microparticles in the cement matrix. The absolute Seebeck coefficient of these composites increased steadily with increasing metallic oxide content and achieved 4–5 folds of the original one. The largest absolute thermoelectric power of +100.28 µV/°C was obtained for the composite with 5.0 wt% Bi2O3microparticles. The carrier scattering of the interface between oxide microparticles and cement matrix is probably attributed to the Seebeck effect enhancement.
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