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Taking the magnesium alloy rear door of passenger car as the research object, the finite element software Comsol Multiphysics was used to establish the galvanic corrosion model of magnesium-steel dissimilar materials and simulate its galvanic corrosion behavior, the corrosion mechanism of magnesium-steel was analyzed by combining the results of electrochemical testing and corrosion morphology. Meanwhile, 4 anti-galvanic corrosion measures were formulated by combining the corrosion mechanism. These 4 anti-corrosion methods, including reducing electrolyte concentration, magnesium alloy surface treatment, reducing cathode area and adding aluminum alloy transition layer between magnesium and steels, can effectively inhibit the galvanic corrosion between magnesium and steels.
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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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