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Usage of Molybdenum Disilicide

Molybdenum disilicide as a structural material for the aerospace, automotive gas turbine hot parts, gas burner, nozzle, and the ignition plug and the high temperature filter as structural materials intermetallic latest research hotspot. Application in this regard is the biggest obstacle brittle at room temperature and high temperature strength is low. Therefore, low-temperature toughness of molybdenum disilicide and high Wenbu Jiang is its practical application as a structural material of the key technologies. This research showed that composite alloying and molybdenum disilicide to improve the toughness and high temperature strength effective means. Generally used for alloying molybdenum disilicide only those components and molybdenum disilicide with the same or similar crystal structure WSi2, NbSi2, CoSi2, Mo5Si3 and Ti5Si33 wait a few silicide, which ideally WSi2. But will with WSi2 alloying molybdenum disilicide significant loss of weight advantages, the application subject to certain restrictions. Practice has proved that almost all molybdenum disilicide ceramic reinforcement (such as SiC, TiC, ZrO2, Al2O3, T iB2, etc.) have good chemical stability and compatibility. Therefore, the composite is prepared molybdenum disilicide matrix composites is to improve the mechanical properties of molybdenum disilicide most effective way.

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