| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an Mg-Si-based p-type thermoelectric conversion material having high thermoelectricity, and to provide a production method thereof. <P>SOLUTION: A p-type thermoelectric conversion material contains a sintered compact comprises: Mg<SB POS="POST">2</SB>Si; a compound (I) represented by general formula (1):Mg<SB POS="POST">2</SB>X....(1)[in the formula (1), X represents an alkaline-earth metal selected from a group consisting of strontium and barium]; and a compound (II) represented by general formula (2):XMgSi...(2)[in the formula (2), X is defined as X in the formula (1)]. The content molar ratio of Mg<SB POS="POST">2</SB>Si to the total amount (total amount a) of the Mg<SB POS="POST">2</SB>Si, the compound (I) and the compound (II) (the amount of Mg<SB POS="POST">2</SB>Si/the total amount a)is 0.005-0.2, the content molar ratio of the compound (I) to the total amount a (the amount of the compound (I)/the total amount a) is 0.65-0.99, and the content molar ratio of the compound (II) to the total amount a (the amount of the compound (II)/the total amount a) is 0.005-0.15. <P>COPYRIGHT: (C)2012,JPO&INPIT |
