This paper introduced the hot-rolled zinc-aluminum-magnesium (Zn-Al-Mg) coated steel sheets for automobile chassis from the aspects of coating structure, welding performance, bonding performance, coating performance and corrosion resistance, compared these properties with that of pickling plate and pure zinc coated steel sheets. The results show that the hot-rolled Zn-Al-Mg coated steel sheets have good spot welding, arc welding, bonding and coating properties, which are equivalent to the pure zinc coated steel sheets. The plane corrosion resistance, paint film corrosion resistance and solder joint corrosion resistance of hot-rolled Zn-Al-Mg coated steel sheet are significantly better than those of pickling plate and pure zinc coated steel sheets, which can greatly prolong the service life of chassis parts.
| 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 |