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Cyclic Oxidation Behaviour of MoSi2 and MoSi2-Si3N4 Composites for Aircraft Gas Turbine Elements

机译:飞机燃气轮机元件MoSi2和MoSi2-Si3N4复合材料的循环氧化行为

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摘要

Pest oxidation phenomena is the major drawback of MoSi2 for the applications of this material over gas turbine elements. Therefore, addition of Si3N4 does not only eliminate the structural disintegration behaviour which can only be observed between relatively low temperatures (673-873 K) but also improves the fracture toughness at elevated temperatures. In this study, after giving some significant properties of MoSi2, effect of processing conditions to microstructural morphology and oxidation characteristics at gas turbine operating temperatures will be discussed within a composit approach.
机译:害虫氧化现象是MoSi2的主要缺点,因为该材料比燃气轮机元件更易使用。因此,添加Si 3 N 4不仅消除了只能在相对较低的温度(673-873 K)之间观察到的结构崩解行为,而且还改善了高温下的断裂韧性。在这项研究中,在给出MoSi2的一些重要特性之后,将在复合方法中讨论加工条件对燃气轮机工作温度下的显微组织形态和氧化特性的影响。

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