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Outline
A cylinder shock-wave recycling device was used, and via impacting effects of explosive shock waves, PZT95/5 powders were synthesized from a mixture of Pb4O3, ZrO2, and TiO2 oxides. Based on the XRD analyses of recovered powders and shock wave theory, the synthesis mechanism and process of PZT powders are discussed from the experimental and theoretical facets. The results show that PZT synthesis and Pb3O4 decomposition happened simultaneously, because of the shock-wave particularity, the system temperature and pressure could simultaneously satisfy the thermodynamics conditions of Pb3O4 decomposition and PZT synthesizing reactions. Thus once PbO formed by decomposing Pb3O4, PbO would react immediately with ZrO2 and TiO2 oxide compounds to produce PZT. And the reaction of shock-synthesizing PZT powders belonged to the special solid phase reaction, in which the diffusion velocity and reaction speed were enhanced greatly.
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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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