| 摘要: |
| 研究了利用磁选粉煤灰烧结骨料制备的热电功能砂浆的塞贝克效应（Seebeck effect）以及金属氧化物粉末对热电功能砂浆塞贝克效应的增强效果.结果表明：热电功能砂浆具有较高的塞贝克系数和电导率，所掺入的金属氧化物粉末为热电功能砂浆体系提供了新的载流子并且提高了载流子的有效质量，其塞贝克系数较未掺金属氧化物的热电功能砂浆提高了1个数量级，较碳纤维增强水泥基材料（CFRC）提高了3个数量级；掺入金属氧化物并不会显著降低热电功能砂浆的电导率，且可获得较高的功率因数（PF）；选取具有P型和N型两种半导体性质的金属氧化物热电功能砂浆串联组成1组热电转换装置，在35℃温差下可获得197V的开路电压. |
| 关键词: 磁选粉煤灰烧结骨料 水泥基热电材料 热电效应 塞贝克效应 金属氧化物粉末 |
| DOI：103969/j.issn1007 9629201805001 |
| 分类号: |
| 基金项目:国家自然科学基金资助项目(51461135005) |
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| Seebeck Effect of Thermoelectric Mortar and Enhancement of Its Seebeck Effect |
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WANG Ziyi1, WANG Zhi2, NING Mei2, HE Jian2, HE Yunfei2
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1.College of Materials Science and Engineering, Chongqing Jiaotong University, Chongqing 400074, China;2.College of Materials Science and Engineering, Chongqing University, Chongqing 400045, China
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| Abstract: |
| The Seebeck effect of thermoelectric mortar made by calcined magnetically separated fly ash aggregate and the enhanced Seebeck effect of the thermoelectric mortar adding metallic oxide powders were investigated. The results show that the Seebeck coefficient and the electrical conductivity of thermoelectric mortar is quite high. A new carrier is provided and its effective mass increase by doping with metal oxide powders, also the Seebeck coefficient of thermoelectric mortar |
| Key words: calcined aggregate with magnetically separated fly ash cementitious thermoelectric composite thermoelectric effect Seebeck effect metallic oxide powder |
