采用固相法合成Ca9Co12O28和Ca8.1Gd0.9Co12O28前驱粉体,利用290MPa冷等静压成型,然后无压烧结成瓷.并对它们的热电性能进行了研究.实验结果表明:Ca81Gd0.9Co12O28热电性能优于Ca9Co12O28,两者都属于P型半导体热电材料;由于两者的致密度不高,造成电导率偏低,导致最终热电评价指标ZT值较低.
参考文献
| [1] | 李伟文,赵新兵,朱铁军,曹高劭.Fe-Co-Si-Cu热电材料的输运特性[J].稀有金属材料与工程,2003(08):621-623. |
| [2] | Terasaki I.;Uchinokura K.;Sasago Y. .LARGE THERMOELECTRIC POWER IN NACO2O4 SINGLE CRYSTALS[J].Physical Review.B.Condensed Matter,1997(20):12685-12687. |
| [3] | Masset A C et al.[J].Physical Review B,2000,62:166. |
| [4] | Wang Dongli.[J].Solid State Communications,2004:129615. |
| [5] | Wang Dongli et al.[J].Solid State Communications,2004,376:58. |
| [6] | Li Siwen et al.[J].Chemistry of Materials,2000,12:24247. |
| [7] | Koshibae W.;Maekawa S.;Tsutsui K. .Thermopower in cobalt oxides[J].Physical Review.B.Condensed Matter,2000(11):6869-6872. |
| [8] | Shigeru Horii et al.[J].Japanese Journal of Applied Physics,2003,42:7018. |
| [9] | Li Siwen et al.[J].Journal of Materials Chemistry,1999,9:1659. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%