| 熔体旋甩法制备p型填充式方钴矿化合物Ce0.3Fe1.5Co2.5Sb12的微结构及热电性能 |
| |
| 引用本文： | 郭全胜,李涵,苏贤礼,唐新峰. 熔体旋甩法制备p型填充式方钴矿化合物Ce0.3Fe1.5Co2.5Sb12的微结构及热电性能[J]. 海洋学报, 2010, 32(9): 6666-6672 |
| |
| 作者姓名： | 郭全胜 李涵 苏贤礼 唐新峰 |
| |
| 作者单位： | 武汉理工大学材料复合新技术国家重点实验室,武汉 430070;武汉理工大学材料复合新技术国家重点实验室,武汉 430070;武汉理工大学材料复合新技术国家重点实验室,武汉 430070;武汉理工大学材料复合新技术国家重点实验室,武汉 430070 |
| |
| 基金项目： | 国家重点基础研究发展计划(973项目)(批准号:2007CB607501),国家自然科学基金重点项目(批准号:50731006,50672118)和国家111计划(批准号:B07040)资助的课题. |
| |
| 摘 要： | 采用熔体旋甩法结合放电等离子烧结技术(MS-SPS)制备了p型填充式方钴矿化合物Ce0.3Fe1.5Co2.5Sb12,研究了熔体旋甩工艺对微结构以及热电性能的影响规律.结果表明,较高的铜辊转速和较低的喷气压力有利于提高熔体的冷却速率,使带状产物晶粒细化.薄带经SPS烧结后得到致密、基本单相、晶粒尺寸均匀细小(150—300 nm)的块体.与传统方法制备的试样相比,MS-SPS试样虽然电导率有所降低,但因具有较大的Se
|
| 关 键 词： | 熔体旋甩 p型填充式方钴矿化合物 微结构 热电性能 |
Microstructure and themoelectric properties of p-type filled skutterudite Ce0.3Fe1.5Co2.5Sb12 prepared by melt-spinning method |
| |
| Guo Quan-Sheng,Li Han,Su Xian-Li and Tang Xin-Feng. Microstructure and themoelectric properties of p-type filled skutterudite Ce0.3Fe1.5Co2.5Sb12 prepared by melt-spinning method[J]. Acta Oceanologica Sinica (in Chinese), 2010, 32(9): 6666-6672 |
| |
| Authors: | Guo Quan-Sheng Li Han Su Xian-Li Tang Xin-Feng |
| |
| Affiliation: | State Key Laboratory of Advanced Technology for Materials Synthesis and Processing,Wuhan University of Technology,Wuhan 430070,China;State Key Laboratory of Advanced Technology for Materials Synthesis and Processing,Wuhan University of Technology,Wuhan 430070,China;State Key Laboratory of Advanced Technology for Materials Synthesis and Processing,Wuhan University of Technology,Wuhan 430070,China;State Key Laboratory of Advanced Technology for Materials Synthesis and Processing,Wuhan University of Technology,Wuhan 430070,China |
| |
| Abstract: | Polycrystalline nanostructured bulk samples of p-type filled skutterudite Ce0.3Fe1.5Co2.5Sb12 have been prepared by melt-spinning (MS) method combined with spark plasma sintering (SPS). The effects of melt-spinning process on their microstructure and thermoelectric properties have been investigated. The results indicate that the ribbons have finer microstructure with the increasing cooling rate for melt-spun ribbons, resulting from the increasing copper wheel speed and decreasing ejection pressure. Compared with the sample prepared by traditional method, the samples prepared by MS-SPS method have higher power, factor due to the enhanced thermopower, despite the slightly reduced electrical conductivity. Meanwhile, the lattice thermal conductivity of the MS-SPS samples is significantly suppressed. Hence, the thermoelectric performance of the MS-SPS samples is greatly improved, and the figures of merit reach about 0.55 at 750 K. |
| |
| Keywords: | melt-spinning p-type filled skutterudites microstructure thermoelectric properties |
|
| 点击此处可从《海洋学报》浏览原始摘要信息 |
|
点击此处可从《海洋学报》下载全文 |
|
