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首页> 外文期刊>Journal of Materials Engineering and Performance >Development of High Corrosion- and Wear-Resistant Al-Si Alloy Coating on AZ80 Mg Alloy by Hot Extrusion
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Development of High Corrosion- and Wear-Resistant Al-Si Alloy Coating on AZ80 Mg Alloy by Hot Extrusion

机译：通过热挤压开发AZ80 mg合金上的高腐蚀和耐磨Al-Si合金涂层

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摘要

Mg alloys have been known as the lightest metal materials. However, their practical use is strictly limited due to their poor corrosion and wear resistances. To improve those resistances simultaneously, the present authors have fabricated an Al-Si alloy coating on a Mg alloy substrate by hot extrusion. The Al-Si alloy for coating material was prepared by powder metallurgy and casting processes. An AZ80 Mg alloy billet, a compacted Al-Si alloy plate or a cast Al-Si alloy plate, a die and rams were put in bottom of an extrusion container, and the Mg alloy and the Al-Si alloy were indirectly extruded together. By the hot extrusion, the Mg alloy was successfully coated with the Al-Si alloys prepared in both the powder metallurgy and the casting. The Al-Si alloy-coated Mg alloys showed a high corrosion resistance in a 1.0 mol/L HCl aqueous solution. Also, the wear resistance of the Mg alloy was significantly improved by the Al-Si alloy coating layers. The highest wear resistance was obtained with a cast Al-20 vol.%Si alloy coating layer. The coating improved the wear resistance by 50% compared with the AZ80 Mg alloy.
机译：镁合金被认为是最轻的金属材料。然而，由于其耐腐蚀性和耐磨性差，实际使用受到严格限制。为了同时提高这些电阻，作者通过热挤压在镁合金基体上制备了铝硅合金涂层。采用粉末冶金和铸造工艺制备了涂层材料用铝硅合金。将AZ80镁合金坯料、压实的铝硅合金板或铸造的铝硅合金板、模具和闸板放入挤压容器底部，将镁合金和铝硅合金间接挤压在一起。通过热挤压，成功地在镁合金表面涂覆了粉末冶金和铸造制备的铝硅合金。铝硅合金涂层镁合金在1.0 mol/L盐酸水溶液中表现出较高的耐腐蚀性。此外，铝硅合金涂层显著提高了镁合金的耐磨性。铸造Al-20体积百分比的硅合金涂层可获得最高的耐磨性。与AZ80镁合金相比，涂层的耐磨性提高了50%。

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