Katharina Beck, Till König, Abigail Case, Ceyhun Oskay, Mathias C. Galetz
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引用次数: 0
摘要
近年来，由于钼基合金具有良好的高温性能，并可用于涡轮机等工业高温应用领域，人们对钼基合金的兴趣大增。涡轮机中的一个重要腐蚀机制是硫酸盐盐对结构材料的侵蚀，即所谓的热腐蚀。因此，我们研究了 Mo-9.0Si-8.0B 在 700°C 和 900°C 温度下 24 小时和 100 小时的 I 类和 II 类热腐蚀行为。因此，详细讨论了通过钼酸盐助熔，伴随着氧化钼蒸发的潜在热腐蚀机制。在较高的温度下，MoO3 的蒸发变得占主导地位，留下了带有钼酸盐夹杂物的硅玻璃。
In recent years, interest in Mo-based alloys has increased significantly due to their promising high-temperature behavior and their possible uses for industrial high-temperature applications such as within turbines. An important corrosion mechanism in turbines is the sulfate salt-induced attack of the structural materials, known as hot corrosion. Therefore, the Type I and II hot corrosion behavior of Mo–9.0Si–8.0B was investigated at 700°C and 900°C for 24 and 100 h. The Mo-based alloy showed severe degradation, but not by sulfates. Thus, the underlying hot corrosion mechanism through molybdate fluxing, which is accompanied by Mo oxide evaporation, is discussed in detail. At the higher temperature, the MoO3 evaporation becomes predominant, leaving behind a Si-glass with molybdate inclusions.
期刊介绍：
Materials and Corrosion is the leading European journal in its field, providing rapid and comprehensive coverage of the subject and specifically highlighting the increasing importance of corrosion research and prevention.
Several sections exclusive to Materials and Corrosion bring you closer to the current events in the field of corrosion research and add to the impact this journal can make on your work.
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