Electrochemical behaviour of Fe-based metallic glasses in acidic and neutral solutions
Electrochemical behaviour of Fe-based metallic glasses in acidic and neutral solutions
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铁基金属玻璃在酸性和中性溶液中的电化学行为
DOI：
10.1016/j.corsci.2012.05.025
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发表时间：
2012-10-01
影响因子：
8.3
通讯作者：
Wang, J. Q.
中科院分区：
文献类型：
--
作者：
Wang, Y.;Jiang, S. L.;Wang, J. Q.
用电化学测试、原子力显微镜和X射线光电子能谱研究了FeCrMnMoWBCSi金属玻璃在酸性和中性溶液中的腐蚀行为和钝化膜。与Na2SO4和HCl溶液相比，该合金在硫酸和氯化钠溶液中表现出较高的耐蚀性。在硫酸盐溶液中，膜组分对耐蚀性起着关键作用，而在H_2SO_4溶液中，膜层富集了低价的Cr(III)和Mo(IV)物种。在氯化物溶液中，薄膜的稳定性取决于其结构性质。还提出了HSO4-/SO42-离子吸附和氯离子穿透的可能机理。(C)2012爱思唯尔有限公司。保留所有权利。
The corrosion corrosion behaviour and passive films of the FeCrMnMoWBCSi metallic glasses were investigated in acidic and neutral solutions using electrochemical measurements, AFM, and XPS. The alloys exhibit high corrosion resistance in H2SO4 and NaCl solutions in contrast with Na2SO4 and HCl solutions, respectively. In sulphate solutions, the film composition plays a key role in corrosion resistance and the films in H2SO4 solutions enrich low-valence Cr(III) and Mo(IV) species on the surface. In chloride solutions, the stability of the films depends on their structural properties. Possible mechanisms related to HSO4-/SO42- ions adsorption and Cl- ions penetration are also proposed. (C) 2012 Elsevier Ltd. All rights reserved.