Influence of nitrogenizing and Al-doping on microstructures and thermoelectric properties of iron disilicide materials

2005 ◽  
Vol 13 (7) ◽  
pp. 704-709 ◽  
Author(s):  
H.Y. Chen ◽  
X.B. Zhao ◽  
T.J. Zhu ◽  
Y.F. Lu ◽  
H.L. Ni ◽  
...  
Keyword(s):  
Thermoelectric Properties ◽  
Al Doping ◽  
Iron Disilicide

Thermoelectric Properties of Doped Iron Disilicide

2000 ◽  
Vol 626 ◽  
Author(s):  
Jun-ichi Tani ◽  
Hiroyasu Kido
Keyword(s):  
Thermal Conductivity ◽  
Electrical Resistivity ◽  
Seebeck Coefficient ◽  
Thermoelectric Properties ◽  
Measured Temperature ◽  
Iron Disilicide ◽  
Measured Temperature Range ◽  
Temperature Range

ABSTRACTIn order to investigate the thermoelectric properties of Re-doped β-FeSi2 (Fe1-xRexSi2), Ir-doped β-FeSi2 (Fe1-xIrxSi2), and Pt-doped β-FeSi2 (Fe1-xPtxSi2), the electrical resistivity, the Seebeck coefficient, and the thermal conductivity of these samples have been measured in the temperature range between 300 and 1150 K. Fe1-xRexSi2 is p-type, while Fe1-xIrxSi2 and Fe1-xPt xSi2 are n-type over the measured temperature range. The solubility limits of dopant are estimated to be 0.2at% for Fe1-xRexSi2, 0.5at% for Fe1-xIrxSi2, and 1.9at% for Fe1-xPtxSi2. A maximum ZT value of 0.14 was obtained for Fe1-xPt xSi2 (x=0.03) at the temperature 847 K.

Point defects and thermoelectric properties of iron disilicide ceramics sintered with SiH4‐plasma‐processed micrograins

1994 ◽  
Vol 76 (4) ◽  
pp. 2097-2103 ◽  
Author(s):  
T. Miki ◽  
Y. Matsui ◽  
Y. Teraoka ◽  
Y. Ebina ◽  
K. Matsubara ◽  
...  
Keyword(s):  
Thermoelectric Properties ◽  
Point Defects ◽  
Iron Disilicide

Sintering Temperature-Dependent Chemical Defects and the Effect on the Electrical Resistivity of Thermoelectric ZnO

2014 ◽  
Vol 1 (1-2) ◽  
Author(s):  
Yu Zhao ◽  
Ashok Kumar ◽  
Giti A. Khodaparast ◽  
Amnah Eltahir ◽  
Hsin Wang ◽  
...  
Keyword(s):  
Zinc Oxide ◽  
Electrical Resistivity ◽  
Electrical Property ◽  
Thermoelectric Properties ◽  
Carrier Density ◽  
Sintering Temperature ◽  
Sharp Decrease ◽  
Synthesis Temperature ◽  
Temperature Dependent ◽  
Al Doping

AbstractThermoelectric properties of zinc oxide (ZnO) are largely influenced by its electrical property. In this paper, we investigated the correlation between the electrical resistivity and synthesis temperature for aluminum (Al)-modified ZnO. At constant Al doping, the electrical resistivity of ZnO exhibited sharp decrease with increase in sintering temperature due to the increased carrier density resulting from Al

Effect of FAPAS Process on the Thermoelectric Properties of β-FeSi2

2010 ◽  
Vol 650 ◽  
pp. 137-141
Author(s):  
Qing Sen Meng ◽  
Wen Hao Fan ◽  
L.Q. Wang ◽  
L.Z. Ding
Keyword(s):  
Thermal Conductivity ◽  
Grain Size ◽  
Phase Transformation ◽  
Thermoelectric Properties ◽  
Thermoelectric Materials ◽  
Annealing Time ◽  
Figure Of Merit ◽  
Iron Disilicide ◽  
Temperature Range ◽  
Average Grain Size

Iron disilicide (-FeSi2, and -FeSi2+Cu0.1wt%) were prepared by a field-activated pressure assisted synthesis(FAPAS) method from elemental powders and the thermoelectric properties were investigated. The average grain size of these products is about 0.3m. The thermal conductivity of these materials is 3-4wm-1K-1in the temperature range 300-725K. These products’ figure of merit is 28.50×10-4 in the temperature range 330-450K. The additions of Cu promote the phase transformation of -Fe2Si5 + -FeSi → β-FeSi2 and shorten the annealing time. It is proved that FAPAS is a benign and rapid process for sintering of -FeSi2 thermoelectric materials.

Thermoelectric properties of boron doped iron disilicide

2002 ◽  
Author(s):  
Y. Isoda ◽  
Y. Shinohara ◽  
Y. Imai ◽  
I.A. Nishida ◽  
O. Ohashi
Keyword(s):  
Thermoelectric Properties ◽  
Iron Disilicide ◽  
Boron Doped

Thermoelectric properties of hot-pressed Al- and Co-doped iron disilicide materials

2007 ◽  
Vol 438 (1-2) ◽  
pp. 303-309 ◽  
Author(s):  
Zeming He ◽  
Dieter Platzek ◽  
Christian Stiewe ◽  
Haiyan Chen ◽  
Gabriele Karpinski ◽  
...  
Keyword(s):  
Thermoelectric Properties ◽  
Iron Disilicide ◽  
Co Doped
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