Full
LUO Shuai (1987-), male, Ph.D.. E-mail: luoshuai@spic.com.cn
Outline
A pressure rapid sintering process of tetragonal zirconia ceramics was proposed. The effects of sintering parameters (i.e., temperature, voltage, current and pressure) on the density, microstructure and phase composition of zirconia were investigated. The process superimposed a flash burning effect based on hot pressing sintering, and the high-temperature conductive zirconia was instantly densified and sintered at a high electric field strength. The results show that the pressure-assisted flash sintering process involves the advantages of hot pressing sintering and flash sintering. Zirconia powder was used as a raw material to simplify the green pressing process. Low temperature and instantaneous flash firing inhibit the high-temperature phase transformation of zirconia. Hot pressing in sintering process ensures the diffusion and flow of zirconia powder and enhances the density.
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| 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 |
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