LIU Jianke (1966-), male, Ph.D., Professor. E-mail: liujk@sust.edu.cn
The ZnO-A12O3-MgO-TiO2-SiO2-Fe2O3 linear ceramic resistance were prepared by solid state sintering method. The effect of Fe2O3 doping on the microstructure, impedance, temperature-resistance characteristics and impedance-frequency characteristics was investigated. The results show that the ZnO linear ceramic resistance doping with 0.75% (mass fraction) Fe2O3 has the optimum comprehensive performance. This resistance synthesized has nonlinear coefficient of 1.12, and resistance temperature coefficient of -8.23×10-3/℃.
| 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 |