The microgravity environment in space can eliminate interference factors such as buoyancy convection and container wall effect induced by gravity, offering unique experimental conditions for materials science research. To explore the new laws of material preparation in the space environment and develop high−performance novel materials that are challenging to obtain on Earth, this paper reviews the overall progress of 19 space material science experiments conducted by the High−temperature Material Science Experiment Rack in the Mengtian Experimental Module of the China Space Station (CSS) since its launch in 2022. Meanwhile, the research findings of six representative projects are emphasized, including the preparation of topological superconducting single crystals, the growth of multicomponent semiconductor alloys, the preparation of flexible semiconductor crystals, the manufacturing of iron−based superconducting materials, the solidification of Al−Si alloys, and the research on the impurity segregation mechanism. The research indicates that the microgravity environment can effectively promote the improvement of material component uniformity, crystal integrity, crystallization quality, and doping concentration, thereby enhancing material performance. The relevant results provide important experimental evidence and theoretical support for space materials science research and future in−situ space manufacturing.
| 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 |