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MoSi2 and MoSi2 - Based Materials as Structural Ceramics

机译：MoSi2和MoSi2基材料作为结构陶瓷

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MoSi2, because of its mixed covalent-metallic atomic bonding, is a borderline intermetallic compound which has many attractive properties that can be exploited in high temperature structural applications . Foremost amongst these is its stability in corrosive atmospheres up to about 1600 C . However, there are a few undesirable prooperties that need to be addressed before it can become a viable material in high temperature applications . Since MoSi2 forms thermodynamically stable composites with both metals and ceramics, many reinforcing materials are incorporated into the matrix to improve the fracture toughness and creep properties . The low temperature oxidation can be controlled by compaction to high density . Mo(Al, Si)2, a related ceramic, which also has good high temperature properties besides having better low temperature toughness . However, presence of Mo5Si3 phase, which has low oxidation resistance, needs to be controlled . This is being achieved by synthesizing Mo(Al, Si)2 at as low a temperature as 1300 C. This article summarizes important attempts that are made in improving the properties of MoSi2 by reinforcement with other materials .
机译：MoSi 2，由于其混合的共价金属原子键，是一种临界的金属间化合物，具有许多吸引人的特性，可在高温结构应用中加以利用。其中最重要的是在高达1600 C的腐蚀性气氛中的稳定性。然而，在成为高温应用中的可行材料之前，需要解决一些不希望的特性。由于MoSi2与金属和陶瓷形成热力学稳定的复合材料，因此将许多增强材料掺入基体中以改善断裂韧性和蠕变性能。可以通过压实控制高密度来控制低温氧化。 Mo（Al，Si）2，一种相关的陶瓷，除了具有更好的低温韧性外，还具有良好的高温性能。然而，需要控制抗氧化性较低的Mo5Si3相的存在。这是通过在低至1300 C的温度下合成Mo（Al，Si）2来实现的。本文总结了通过用其他材料进行增强来改善MoSi2的性能的重要尝试。

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