YANG Dongwang (1989-), male, Ph.D. E-mail: ydongwang@whut.edu.cn
ZrNiSn bulk thermoelectric materials were synthesized by a self-propagating high-temperature synthesis (SHS) process. Phases and microstructure of ZrNiSn were investigated. Its thermoelectric property was tested. The results show that there are a large number of nuclei and high concentration of dislocation groups and stress fluctuation area inside the dense material, greatly enhancing the phonon scattering and reducing the phonon mean free paths, thus leading to the decreased lattice thermal conductivity of the materials. The thermoelectric properties of the material were optimized, and the ZT value is 0.54 at 873 K.
| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |