발간논문

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Vol.26, No.5, 432 ~ 440, 1988
Title
Thermal stability of Molybdenum - Fiber - Reinforced Metal - matrix Composites
황헌기Hun Ki Hwang, 이지환Chi Hwan Lee
Abstract
High temperature interfacial reactions in the Mo-fiber reinforced metal matrix composites were studied. The matrices were 304 stainless steel and pure nickel. For Mo/SUS 304 composites, thin brittle layers were formed at the interface. Molybdenum wires were recrystallized after heating for 50 hrs at 1150℃. For Mo/Ni composites, the circumferences of molybdenum wires were recrystallized at temperatures below 1050℃. The re-crystallization of molybdenum wires seems to be activated by the diffusion of nickel into the grain boundary of molybdenum The depth of the recrystallized region was proportional to the exposure time. Molybdenum wires were recrystallized completly at 1150℃ and two kinds of brittle layers were formed at the interface. The recrystallized grains of molybdenum wires were much larger than that in the Mo/SUS 304 composite.
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