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arXiv 1402.4935cond-mat.mtrl-sci
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原料配比对放电等离子烧结AlMgB14-based材料热电性能的影响

Effect of varying mixture ratio of raw material powders on the thermoelectric properties of AlMgB14-based materials prepared by spark plasma sintering

Shota Miura, Hikaru Sasaki, Ken-ichi Takagi, Takuya Fujima

摘要:

研究了放电等离子烧结AlMgB 14基材料的热电性能。使用Al、Mg和B粉末作为原料粉末。使用V形混合器混合原料粉末,然后在1673 K或1773 K下烧结混合物。原料粉末的混合比围绕AlMgB 14的化学计量比变化。X射线衍射分析表明,所有样品均由AlMgB_(14)和部分副产物MgAl_2 O_4、B_2 O和AlB_(12)组成。样品的塞贝克系数表现出显着的变化,这取决于不同的混合比。在573 ~ 1073 K温度范围内,一个样品的Seebeck系数为负值(约-500 μV/K),而另一些样品的Seebeck系数为正值(250-450 μV/K)。因此,n型AlMgB 14基材料已经简单地通过改变原料比率来实现。

英文摘要:

The thermoelectric properties of AlMgB14-based materials prepared by spark plasma sintering were investigated. Al, Mg, and B powder were used as raw material powders. The raw powders were mixed using a V-shaped mixer, and then the mixture was sintered at 1673 K or 1773K. The mixture ratio of raw powders was varied around stoichiometric ratio of AlMgB14. X-ray diffraction patterns of samples showed that all samples consist of AlMgB14 and some by-products, MgAl2O4, B2O and AlB12. The Seebeck coefficient of the samples exhibited significant change depending on the varying mixture ratio. One sample exhibited a large negative value for the Seebeck coefficient (approximately -500 μV/K) over the temperature range from 573K to 1073 K, while others showed positive value (250-450 μV/K). Thus n-type AlMgB14-based material has been realized simply by varying raw material ratio.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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