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首页> 外文期刊>Revista de metalurgia >Efecto del cobalto en el comportamiento de la corrosión de aleaciones amorfas Fe-Co-Cr-B-Si en ácidos minerales diluidos
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Efecto del cobalto en el comportamiento de la corrosión de aleaciones amorfas Fe-Co-Cr-B-Si en ácidos minerales diluidos

机译：钴对非晶态Fe-Co-Cr-B-Si合金在稀无机酸中腐蚀行为的影响

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摘要

The aim of this paper was to investigate the effect of increasing cobalt content on the corrosion resistance of the Fe- Co-Cr-B-Si alloys in dilute mineral acids. The corrosion rates in 0.5N HCl, 1N HCl and 1N H 2 SO 4 significantly decrease with an increase in cobalt content. The alloys with a larger amount of cobalt can passivate spontaneously. The high corrosion resistance of the Fe-Co-Cr-B-Si alloys is also due to the formation of chromium -enriched passive film. Generally, the corrosion resistance of chromium –bearing alloy is improved by alloying with various metalloids but it is lowered by addition of boron and silicon. The corrosion behaviour of the amorphous Fe 75-x Co x Cr 1 B 7 Si 17 alloys obtained by the melt-spinning technique was studied using gravimetric method. The best results were obtained with Fe 65 Co 10 Cr 1 B 7 Si 17 alloy. The studied amorphous alloy ribbons exhibit not only excellent physical properties which are useful for many electric and magnetic applications: magnetic sensors, power transformers, high frequency transformers, etc., but also a very good corrosion resistance which extend their application domain.
机译：本文的目的是研究增加钴含量对稀无机酸中Fe-Co-Cr-B-Si合金耐蚀性的影响。随着钴含量的增加，在0.5N HCl，1N HCl和1N H 2 SO 4中的腐蚀速率显着降低。钴含量较高的合金可自发钝化。 Fe-Co-Cr-B-Si合金的高耐腐蚀性还归因于富铬钝化膜的形成。通常，通过与各种准金属合金化可以提高含铬合金的耐腐蚀性，但是通过添加硼和硅会降低含铬合金的耐腐蚀性。利用重量分析法研究了通过熔融纺丝技术获得的非晶态Fe 75-x Co x Cr 1 B 7 Si 17合金的腐蚀行为。 Fe 65 Co 10 Cr 1 B 7 Si 17合金获得了最佳结果。所研究的非晶态合金薄带不仅具有出色的物理性能，可用于许多电磁应用：磁性传感器，电力变压器，高频变压器等，而且还具有很好的耐腐蚀性，从而扩展了其应用范围。

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