Fabrication of New Composite Materials,
ARMY MATERIALS AND MECHANICS RESEARCH CENTER WATERTOWN MASS
Pagination or Media Count:
The feasibility of fabricating lamellar ceramic-based composites with synthetic fluorine mica has been demonstrated. Ba-micaAl2O3 composites with greater than 99.5 of theoretical density have been produced. If the thermal shock resistance of these materials is also enhanced, potential applications include structural components in turbine engines and high temperature bearings. Reactive hot-pressing of K-mica with gamma-Al2O3 showed that fully dense K-micaAl2O3 composites are not feasible by hot-pressing up to 7000 psi. The work did demonstrate, however, that this technique allows for the fabrication of eutectic-like MgAl2O4Al2O3 composites 700 C below the eutectic temperature.
- Ceramics, Refractories and Glass
- Laminates and Composite Materials