@inproceedings{10e37315441e4a6690d726c34b514475,
title = "New n-type silicide thermoelectric material with high oxidation resistance",
abstract = "In order to achieve waste heat recovery using thermoelectric systems, thermoelectric materials showing high conversion efficiency over wide temperature range and high resistance against oxidation are indispensable. A silicide material with good n-type thermoelectric properties and oxidation resistance has been discovered. The composition and crystal structure of the silicide are found out Mn3Si4Al2 (abbreviated as 342 phase) and hexagonal CrSi2 structure, respectively. Element substitution of Mn with 3d transition metals is succeeded. Enhancement of Seebeck coefficient is observed in a Cr-substituted sample. The maximum dimensionless thermoelectric figure of merit ZT is 0.3 at 573 K in air for the Mn2.7Cr0.3Si4Al2 sample. Electrical resistivity of the Mn3Si4Al2 bulk sample holds constant value for 48 h at 873 K in air. This is due to formation of oxide passive layer on the surface of the bulk sample. The 342 phase is a promising n-type material with a good oxidation resistance in the middle temperature range of 500-800 K.",
author = "Ryoji Funahashi and Yoko Matsumura and Tomonari Takeuchi and Hideaki Tanaka and Wataru Norimatsu and Emmanuel Combe and Suzuki, {Ryosuke O.} and Chunlei Wan and Yifeng Wang and Michiko Kusunoki and Kunihito Koumoto",
year = "2013",
doi = "10.1557/opl.2013.117",
language = "英语",
isbn = "9781605114675",
series = "Materials Research Society Symposium Proceedings",
pages = "103--112",
booktitle = "Thermoelectric Materials Research and Device Development for Power Conversion and Refrigeration",
note = "2012 MRS Fall Meeting ; Conference date: 25-11-2012 Through 30-11-2012",
}