Abstract
A Heusler alloy, Fe2VAl, is a promising candidate for thermoelectric power generation because of its high thermoelectric power factor, such as 5.5 mW/mK2 at 300 K. This high power factor is produced by a steep pseudogap around the Fermi level. The simultaneous enhancement of Seebeck coefficient and electrical conductivity can be achieved by the control of valence electron concentration within a rigid band model. Moreover, recent studies in the off-stoichiometric composition control, such as Fe2-xV1+xAl, suggest that the modification of the electronic band structure can further enhance the Seebeck coefficient, resulting in the higher power factor. The power generation ability was evaluated by the construction of a thermoelectric module consisting of only the Fe2VAl alloy. A high output power density of 0.7 W/cm2 was then obtained. The durability of the Fe2VAl module derived from high mechanical strength and excellent resistance to oxidation enhances utility for practical thermoelectric power generation.
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References
H. Kato et al., “Effect of Silicon Substitution on Thermoelectric Properties of Heusler-type Fe2VAl Alloy”, J. Jpn. Inst. Metals 65 (2001) 652–656.
Y. Nishino et al., “Effect of off-stoichiometry on the transport properties of the Heusler-type Fe2VAl compound”, Phys. Rev. B 63 (2001) 233–303.
Y. Nishino, S. Deguchi and U. Mizutani, “Thermal and transport properties of the Heusler-type Fe2VAl1-xGex (0≤x≤0.20) alloys: Effect of doping on lattice thermal conductivity, electrical resistivity, and Seebeck coefficient”, Phys. Rev. B 74 (2006) 115115.
G. Y. Guo, G. A. Botton and Y. Nishino, “Electronic structure of possible 3d “heavy-fermion” compound Fe2VAl”, J. Phys.: Cond. Matter 10 (1998) L119-L126.
D. J. Singh and I. I. Mazin, “Electronic structure, local moments, and transport in Fe2VAl”, Phys. Rev. B 57 (1998) 14352–14356.
R. Weht and W. E. Pickett, “Excitonic correlations in the intermetallic Fe2VAl”, Phys. Rev. B 58(1998)6855–6861.
M. Weinert, R. E. Watson, “Hybridization-induced band gaps in transition-metal aluminides”, Phys. Rev. B 58 (1998) 9732–9740.
A. Bansil et al., “Electronic structure and magnetism of Fe3-xVxX (X=Si, Ga, and Al) alloys by the KKR-CPA method”, Phys. Rev. B 60 (1999) 13396–13412.
C. S. Lue and J. H. Ross, “Semimetallic behavior in Fe2VAl: NMR evidence”, Phys. Rev. B 58 (1998) 9763–9766.
H. Okamura et al., “Pseudogap Formation in the Intermetallic Compounds (Fe1-xVx)3Al”, Phys. Rev. Lett. 84 (2000) 3674–3677.
N. F. Mott and H. Jones, The Theory of the Properties of Metals and Alloys (Clarendon Press, Oxford, 1936).
H. Matsuura et al., “Doping Effects on Thermoelectric Properties of the Pseudogap Fe2VAl System”, J. Jpn. Inst. Metals 66 (2002) 767–771.
T. Mori, N. Ide and Y. Nishino, “Thermoelectric Properties of p-Type Fe2(V1-x-yTixTay)Al Alloys”, J. Jpn. Inst. Metals 72 (2008) 593–598.
T. Sugiura and Y. Nishino, “Doping Effects of Transition Metals on Thermoelectric Properties of Off-Stoichiometric Fe2VAl Alloys”, J. Jpn. Inst. Metals 73 (2009) 846–851.
M. Mikami et al., “Thermoelectric properties of tungsten-substituted Heusler Fe2VAl alloy”, J. Appl. Phys. 111 (2012) 093710.
M. Mikami, A. Matsumoto and K. Kobayashi, “Synthesis and thermoelectric properties of microstructural Heusler Fe2VAl alloy”, J. Alloy. Compd. 461 (2008) 423–426.
M. Mikami et al., “Development and Evaluation of High-Strength Fe2VAl Thermoelectric Module”, Jpn. J. Appl. Phys. 47 (2008) 1512–1516.
M. Mikami et al., “Development of a Thermoelectric Module Using the Heusler Alloy Fe2VAl”, J. Electron. Mater. 38 (2009) 1121–1126.
C. S. Lue et al., “Thermoelectric properties of quaternary Heusler alloys Fe2VAl1-xSix”, Phys. Rev. B 75 (2007) 064204.
M. Vasundhara, V. Srinivas and V. V. Rao, “Electronic transport in Heusler-type Fe2VAl1-xMx alloys (M=B, In, Si)”, Phys. Rev. B 11 (2008) 224415.
E. J. Skoug et al., “High Thermoelectric Power Factor Near Room Temperature in Full-Heusler Alloys”, J. Electron. Mater. 38 (2009) 1221.
C. S. Lue et al., “Chemical pressure effect on the transport and electronic band structure of Fe2Vl-xNbxAl”, Phys. Rev. B 78 (2008) 165117.
F. Kobayashi, N. Ide and Y. Nishino, “Effects of Re Substitution on Thermoelectric Properties of Pseudogap System Fe2VAl”, J. Jpn. Inst. Metals 71 (2007) 208–212.
W. Lu, W. Zhang and L. Chen, “Thermoelectric properties of (Fe1-xCox)2VAl Heusler-type compounds”, J. Alloy. Compd. 484 (2009) 812–815.
K. Iwase et al., “Thermoelectric Properties of Heusler-Type (Fe1-xCox)2TiAl Alloys”, J. Jpn. Inst. Metals 72 (2008) 464–469.
Y. Nishino, The Science of Complex Alloy Phases, ed T. B. Massalski and P. E. Turchi (Warrendale: TMS).
C. S. Lue and Y. K. Kuo, “Thermoelectric properties of the semimetallic Heusler compounds Fe2-xV1+xM(M=Al, Ga)”, Phys. Rev. B 66 (2002) 085121.
Y. Hanada, R. O. Suzuki and K. Ono, “Seebeck coefficient of (Fe,V)3Al alloys”, J. Alloy. Compd. 329(2001)63–68.
T. Nakama se al., “Transport Properties of Heusler Compounds Fe3-xVxAl”, J. Phys. Soc. Jpn. 74(2005)1378–1381.
Y. Sandaiji et al., “Off-stoichiometric Effects on Thermoelectric Properties of Fe2VAl-based Compounds”, J. Jpn. Soc. Powder. Powder. Metall. 57 (2010) 207–212.
T. Kajikawa, “Approach to the Practical Use of Thermoelectric Power Generation”, J. Electron. Mater. 38 (2009) 1083–1088.
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Mikami, M., Nishino, Y. (2014). Development of Heusler-Type Fe2VAl Alloys for Thermoelectric Power Generation. In: TMS 2014: 143rd Annual Meeting & Exhibition. Springer, Cham. https://doi.org/10.1007/978-3-319-48237-8_46
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DOI: https://doi.org/10.1007/978-3-319-48237-8_46
Publisher Name: Springer, Cham
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