The Phase Equilibria and Seebeck Coefficient of (Co,M)3AlC (M=Fe or Ni)

Maruoka, Tatsuya; Suzuki, Ryosuke O.

The Phase Equilibria and Seebeck Coefficient of (Co,M)3AlC (M=Fe or Ni)

Maruoka, Tatsuya; Suzuki, Ryosuke O.

Materials Transactions, 2006, 47(6), 1422-1427

Permalink : https://hdl.handle.net/2115/50113

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アクセス権	open access
URI	https://hdl.handle.net/2115/50113
タイトル	The Phase Equilibria and Seebeck Coefficient of (Co,M)3AlC (M=Fe or Ni)
著者	著者名 Maruoka, Tatsuya
著者	e-Rad_Researcher 80179275 著者名 Suzuki, Ryosuke O.
言語	英語
キーワード	Seebeck coefficient
	thermoelectric property
	phase equilibria
	carbide
	energy density of states
発行日	2006
出版者	Thermoelectrics Society of Japan
収録物名	Materials Transactions
巻(号)	47(6)
ページ	1422-1427
抄録	The phase equilibria and the Seebeck coefficient were measured at the vicinity of the carbide (Co,M)3AlC (M = Fe or Ni) in the Co-Al-C, Co-Fe-Al-C and Co-Ni-Al-C systems. The samples were well annealed at 1473K and examined through X-ray diffraction measurements, energy dispersive X-ray analysis and carbon analysis. Co3AlC with a perovskite structure did not exist at its stoichiometric composition, but was located within a narrow compositional range near Co3AlC0.67. The maximum Seebeck coefficient was 23.3 μV/K at 873K for Co3AlC0.63. The replacement of a small amount of Co by Fe resulted in the expansion of the single-phase area of (Co,Fe)3AlCx, and the Seebeck coefficient of the single phase reached its maximum, 32.6 μV/K, at 873K and Co3.506Fe0.025AlC0.77 in the quaternary Co-Fe-Al-C system. The addition of Ni did not stabilize this carbide, and the maximum Seebeck coefficient in the quaternary Co-Ni-Al-C system was 26.9 μV/K at 873 K.
資源タイプ	学術雑誌論文
出版タイプ	Version of Record
PISSN	1345-9678
EISSN	1347-5320
関連情報 (isIdenticalTo)	出版社版DOI https://doi.org/10.2320/matertrans.47.1422