YANG Shuo (1982—), male, Master, Senior Engineer. E-mail: longtouys@163.com
An ITO green body was prepared via molding-assisted cold isostatic pressing with gasified In2O3 and SnO2 powder (n(In2O3)/n(SnO2)=9∶1). The ITO targets with different Sn contents were sintered in oxygen atmosphere at 1 550 ℃. The target samples were ground and then corrosion products were extracted after sieving and being corroded. The microstructure, phase composition, density and resistivity of the target surface and corrosion products at different Sn contents were analyzed. The results show that the corrosion product is the second phase-In4Sn3O12 of the ITO target. The grain size of the ITO target decreases with the increase of SnO2 content, and the second phase of the grain boundary gradually increases and stabilizes at below 3 μm. The size of small particles in the ITO target increases with the increase of SnO2 content and is stable below 100 nm. The second phase of the target has a trace amount of oxygen loss at the loss rate of 1.1%. The actual and theoretical densities of the target increase with the increase of SnO2 content. The measured density increases from 7.110 to 7.145 g/cm3 and the resistivity of the target increases from 1.3×10-4 to 1.9×10-4 Ω·cm with the increase of SnO2 content.
| 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 |