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CN  62-1095/O4

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宋晓萍, 王优强, 张平, 曹磊, 谢奕浓, 赵晶晶. 7055铝合金在3.5%NaCl溶液中腐蚀磨损性能的研究[J]. 摩擦学学报, 2020, 40(1): 73-81. DOI: 10.16078/j.tribology.2019121
引用本文: 宋晓萍, 王优强, 张平, 曹磊, 谢奕浓, 赵晶晶. 7055铝合金在3.5%NaCl溶液中腐蚀磨损性能的研究[J]. 摩擦学学报, 2020, 40(1): 73-81. DOI: 10.16078/j.tribology.2019121
SONG Xiaoping, WANG Youqiang, ZHANG Ping, CAO Lei, XIE Yinong, ZHAO Jingjing. Corrosion Wear Properties of 7055 Aluminum Alloy in 3.5% NaCl Solution[J]. TRIBOLOGY, 2020, 40(1): 73-81. DOI: 10.16078/j.tribology.2019121
Citation: SONG Xiaoping, WANG Youqiang, ZHANG Ping, CAO Lei, XIE Yinong, ZHAO Jingjing. Corrosion Wear Properties of 7055 Aluminum Alloy in 3.5% NaCl Solution[J]. TRIBOLOGY, 2020, 40(1): 73-81. DOI: 10.16078/j.tribology.2019121

7055铝合金在3.5%NaCl溶液中腐蚀磨损性能的研究

Corrosion Wear Properties of 7055 Aluminum Alloy in 3.5% NaCl Solution

  • 摘要: 本文中研究了不同固溶处理后7055铝合金在3.5%NaCl溶液中的耐腐蚀行为,在3.5%NaCl溶液下进行了静态腐蚀试验及腐蚀磨损试验,并通过扫描电子显微镜对磨痕形貌进行分析. 结果表明:固溶处理后试样的耐腐蚀性能均有不同程度的提高,其中以双级固溶处理试样的耐腐蚀性能最好. 在动极化、开路电位以及阴极保护和阳极加速腐蚀试验中,固溶处理后材料自腐蚀电位正移,腐蚀电流密度减小,耐腐蚀磨损性能提高. 在不同加载电位下,腐蚀电流密度和磨损率随着电位的增加而增大,在−1.2 V时摩擦系数最小. 同时随着电位的升高,腐蚀作用促进了合金的磨损. 在较低电位时,合金的腐蚀磨损机制主要是磨粒磨损;而较高电位下,合金的腐蚀磨损机制主要是黏着磨损和腐蚀磨损.

     

    Abstract: The corrosion behavior of 7055 aluminum alloy in 3.5%NaCl solution after different solid-soluble treatment was studied. Both static and corrosion wear test were carried out, and the morphology of worn surfaces was observed by scanning electron microscope. The results showed that the corrosion resistance of the solid-soluble treatment sample was improved, and the corrosion resistance of the two-stage solid-soluble treatment sample exhibited the best corrosion resistance. The self-corrosion potential of the solid-soluble treatment sample was positively shifted, the corrosion current density was reduced, and the corrosion wear performance was improved. Under different loading potentials, the corrosion current density and wear rates increased with the increase of potential. The lowest coefficient of friction was obtained when the applied potential was −1.2 V. With the increase of potential, the interaction of corrosion and wear promoted wear of the alloy. At lower potentials, the corrosion wear mechanism of the alloy was mainly abrasive wear, while at the higher potential, the corrosion wear mechanism of the alloy was mainly adhesive wear and friction-induced corrosion wear.

     

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