The Influence of the Composition of Amorphous Alloys on Their Corrosion Resistance in Aggressive Environments of Different Nature

IF 0.7 4区材料科学 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Science Pub Date : 2024-06-18 DOI:10.1007/s11003-024-00810-w

O. M. Hertsyk, T. H. Hula, O. A. Yezerska, V. K. Nosenko, S. A. Korniy, M. S. Tashak

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Abstract

The influence of the elemental composition of strip amorphous alloys Fe_80.0Si_6.0B_14.0, Fe_78.5Ni_1.0Mo_0.5Si_6.0B_14.0; Fe_73.1Cu_1.0Nb_3.0Si_15.5B_7.4; Fe_51.7Ni_21.7Cr_6.2Mo_0.6V_1.5Si_5.2B_13.1 on corrosion resistance in 0.5 M aqueous solutions of NaCl, HCl, and KOH at T = (293 ± 1) K was investigated. The high corrosion resistance of Fe_51.7Ni_21.7Cr_6.2Mo_0.6V_1.5Si_5.2B_13.1 and Fe_73.1Cu_1.0Nb_3.0Si_15.5B_7.4 alloys in aggressive environments was established. Electrochemical parameters obtained both by the method of cyclic voltammetry and electrochemical impedance spectroscopy (EIS) indicate the formation of more durable surface layers in a 0.5 M potassium hydroxide aqueous solution on these alloys. The Cl^– ions (especially at low pH) under their long-term action are the more aggressive oxidizers of amorphous alloys compared to OH^– ions. During the passivation film formation in highly aggressive environments such alloy elements, which do not participate in this process, actively dissolve, and the main film-forming elements accumulate under the film, thus improving its protective properties.

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非晶合金成分对其在不同性质侵蚀环境中耐腐蚀性的影响

带状非晶合金 Fe80.0Si6.0B14.0、Fe78.5Ni1.0Mo0.5Si6.0B14.0、Fe73.1Cu1.0Nb3.0Si15.5B7.4、Fe51.在 0.5 M 的 NaCl、HCl 和 KOH 水溶液中的耐腐蚀性能。确定了 Fe51.7Ni21.7Cr6.2Mo0.6V1.5Si5.2B13.1 和 Fe73.1Cu1.0Nb3.0Si15.5B7.4 合金在侵蚀性环境中的高耐腐蚀性。通过循环伏安法和电化学阻抗谱法（EIS）获得的电化学参数表明，在 0.5 M 氢氧化钾水溶液中，这些合金形成了更持久的表面层。与 OH- 离子相比，Cl- 离子（尤其是在低 pH 值条件下）在长期作用下对无定形合金的氧化作用更强。在高侵蚀性环境中形成钝化膜的过程中，这些不参与此过程的合金元素会主动溶解，而主要的成膜元素会积聚在膜下，从而提高其保护性能。

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来源期刊

Materials Science 工程技术-材料科学：综合

CiteScore

1.60

自引率

44.40%

发文量

审稿时长

4-8 weeks

期刊介绍： Materials Science reports on current research into such problems as cracking, fatigue and fracture, especially in active environments as well as corrosion and anticorrosion protection of structural metallic and polymer materials, and the development of new materials.