FIBER ZUR VERSTäRKUNGMIT BEIM ERSTARRENERHALTENEM GERICHTETEN GEFüGE AUS EUTEKTIKA

摘要

Directionally Solidified Eutectic Reinforcing Fibers Eutectic reinforcing fibers for high temperature composites include eutectic mixtures such as Al2O3-Y2O3, Cr2O3-SiO2, MgO-Y2O3, CaO-NiO, and CaO-MgO. The fibers may be made by several solidification processes. The edge defined film fed growth process (EFG), however, may be especially appropriate. In this process, a seed having a known composition contacts the surface of a eutectic melt in a crucible and forms a molten film. In the present invention, the composition of the seed may be equal to the composition of the eutectic melt. As the seed is pulled upward, the molten film solidifies to form a eutectic fiber. Directional solidification occurs toward the melt.