SUN Lijun (1996-), male, Master candidate. E-mail: slj927@163.com
Porous alumina ceramics have many superior properties, such as high-temperature resistance, corrosion resistance, and low thermal conductivity. Alumina ceramics with solid and hollow lattices were prepared by a digital light processing (DLP) 3D printing technique. Stable alumina ceramics were sintered at 1 550℃ for 4h. The experimental results show that alumina ceramic with the solid lattice has a higher compressive strength rather than that with the hollow lattice, and the maximum compressive strength of alumina ceramic with the solid lattice is 4.80 MPa. The maximum compressive strength of the ceramic with the hollow lattice is 1.59 MPa. The results of mechanical tests are similar to the simulation data. Alumina ceramic with the hollow lattice formed by DLP technique can be used in industrial thermal insulation applications.
| 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 |