Corrosion behavior of a bulk nanocrystalline Al-Fe alloy
Corrosion behavior of a bulk nanocrystalline Al-Fe alloy
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DOI：
10.1016/j.corsci.2022.110727
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发表时间：
2022-12
影响因子：
8.3
通讯作者：
F. Ozdemir;C. S. Witharamage;J. Christudasjustus;AA. Darwish;H. Okuyucu;R.K. Gupta
中科院分区：
文献类型：
--
作者：
F. Ozdemir;C. S. Witharamage;J. Christudasjustus;AA. Darwish;H. Okuyucu;R.K. Gupta
采用高能球磨法制备了组织均匀、铁固溶度高的纳米晶Al-Fe合金。循环动电位极化测试显示高点蚀电位。Al-Fe合金的硬度和耐蚀性高于任何商业铝合金。高硬度和耐腐蚀性归因于纳米晶结构和固溶体的形成。X射线光电子能谱、二次离子质谱和扫描透射电子显微镜分析表明，Fe元素在合金表面膜中的富集和合金/表面膜界面处的铁富集是合金腐蚀性能提高的主要原因。
Nanocrystalline Al-Fe alloy, with uniform microstructure and high solid solubility of Fe, has been produced by high-energy ball milling. Cyclic potentiodynamic polarization tests revealed high pitting potential. Hardness and corrosion resistance of the Al-Fe alloy were higher than any commercial Al alloy. High hardness and corrosion resistance were attributed to the nanocrystalline structure and formation of solid solution. X-ray photoelectron spectroscopy, secondary ion mass spectrometry, and scanning transmission electron microscopy indicated the incorporation of Fe to the surface film and Fe enrichment at the alloy/surface film interface, which were attributed to the enhanced corrosion performance.