Directionally solidified eutectic reinforcing fibers and fiber reinforced composites containing the fibers

Directionally solidified eutectic reinforcing fibers and fiber reinforced composites containing the fibers

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 proc...

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Bibliographische Detailangaben
Hauptverfasser: GIAMEI, ANTHONY F, THOMPSON, EARL R
Format: Patent
Sprache:eng
Schlagworte:
AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUSPOLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE
APPARATUS THEREFOR
ARTIFICIAL STONE
CEMENTS
CERAMICS
CHEMISTRY
COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS
CONCRETE
CRYSTAL GROWTH
LIME, MAGNESIA
METALLURGY
PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITHDEFINED STRUCTURE
REFINING BY ZONE-MELTING OF MATERIAL
REFRACTORIES
SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITHDEFINED STRUCTURE
SINGLE-CRYSTAL-GROWTH
SLAG
TREATMENT OF NATURAL STONE
UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL ORUNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL
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Zusammenfassung: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.