An Investigation into the Corrosion Rates of Inconel 600™ in Different Corrosive Solutions

IF 0.8 4区 化学 Q4 CHEMISTRY, MULTIDISCIPLINARY
B. Davoren, E. Ferg, N. Rust
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引用次数: 0

Abstract

Inconel 600TM, an austenitic high nickel alloy, has relatively low corrosion properties and is used extensively for aerospace and nuclear engineering applications. Other applications include exposure of the material to caustic and acidic environments and possible use in prosthetic implants. Electrochemical techniques, which include potentiodynamic polarization and polarization resistance, provide a means to rapidly determine the corrosion rates and the suitability of the alloy in a specific corrosive environment. The results from these two techniques were used to determine the corrosion rates as well as other thermodynamic properties for the alloy exposed to various strong and weak acids, salt and Ringer’s solution. The results showed slight differences in the corrosion rates determined by the two electrochemical techniques, with those from the polarization resistance technique being on average larger. The corrosion activation energies determined for the alloy in different solutions were indicative of the corrosion rates with some anomalies in values for results observed in the 10 % acetic acid solution. The microstructural composition of the alloy was also investigated by SEM-EDS and showed peculiar inclusions that can contribute to an acceleration of the corrosion
Inconel 600™在不同腐蚀溶液中的腐蚀速率研究
英科乃尔600TM是一种奥氏体高镍合金,具有相对较低的腐蚀性能,广泛用于航空航天和核工程应用。其他应用包括将材料暴露在苛性和酸性环境中,并可能用于假体植入物。电化学技术,包括动电位极化和极化电阻,提供了一种快速确定腐蚀速率和合金在特定腐蚀环境中的适用性的方法。这两种技术的结果被用来确定合金暴露于各种强酸和弱酸、盐和林格溶液中的腐蚀速率以及其他热力学性质。结果表明,两种电化学方法测定的腐蚀速率略有差异,极化电阻法测定的腐蚀速率平均较大。合金在不同溶液中的腐蚀活化能反映了腐蚀速率,在10%醋酸溶液中观察到的结果有一些异常。通过SEM-EDS分析了合金的显微组织组成,发现了加速腐蚀的特殊夹杂物
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来源期刊
CiteScore
3.10
自引率
0.00%
发文量
6
审稿时长
>12 weeks
期刊介绍: Original work in all branches of chemistry is published in the South African Journal of Chemistry. Contributions in English may take the form of papers, short communications, or critical reviews.
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