An impact resistant clad composite armor which includes a ceramic core, and a layer of bulk amorphous alloy surrounding the ceramic core and preferably bonded chemically to the ceramic core and a method of manufacturing such armor is provided.
대표청구항▼
What is claimed is: 1. A ceramic armor comprising: a ceramic core; and a metallic layer formed from an amorphous alloy having a yield strength of at least 1.6 GPa and an elastic strain limit of at least 1.2%, the amorphous alloy encapsulating the ceramic core such that the metallic layer places the
What is claimed is: 1. A ceramic armor comprising: a ceramic core; and a metallic layer formed from an amorphous alloy having a yield strength of at least 1.6 GPa and an elastic strain limit of at least 1.2%, the amorphous alloy encapsulating the ceramic core such that the metallic layer places the ceramic core under a compressive stress of at least 400 MPa, wherein at least a portion of the metallic layer formed from an amorphous alloy has a thickness of about 0.5 mm or more. 2. The ceramic armor as described in claim 1, wherein the amorphous alloy is described by the following molecular formula: (Zr,Ti) a(Ni,Cu, Fe)b(Be,Al,Si,B)c, wherein "a" is in the range of from about 30 to 75, "b" is in the range of from about 5 to 60, and "c" in the range of from about 0 to 50 in atomic percentages. 3. The ceramic armor as described in claim 1, wherein the amorphous alloy is described by the following molecular formula: (Zr,Ti) a(Ni,Cu)b(Be)c, wherein "a" is in the range of from about 40 to 75, "b" is in the range of from about 5 to 50, and "c" in the range of from about 5 to 50 in atomic percentages. 4. The ceramic armor as described in claim 1, wherein the amorphous alloy is a Zr--Ti base bulk solidifying amorphous alloy. 5. The ceramic armor as described in claim 1, wherein the amorphous alloy is described by the following molecular formula: (Zr) a(Nb,Ti)b(Ni,Cu)c(Al)d, wherein "a" is in the range of from about 45 to 65, "b" is in the range of from about 0 to 10, "c" in the range of from about 20 to 40, and "d" in the range of from about 7.5 to 15 in atomic percentages. 6. The ceramic armor as described in claim 1, wherein the amorphous alloy can sustain strains up to 1.5% or more without any permanent deformation or breakage. 7. The ceramic armor as described in claim 1, wherein the amorphous alloy has a high fracture toughness of at least about 10 ksi-√in. 8. The ceramic armor as described in claim 1, wherein the amorphous alloy has a high fracture toughness of at least about 20 ksi-√in. 9. The ceramic armor as described in claim 1, wherein the amorphous alloy has a high hardness value of at least about 4 Gpa. 10. The ceramic armor as described in claim 1, wherein the amorphous alloy has a high hardness value of at least about 5.5 GPa. 11. The ceramic armor as described in claim 1, wherein the amorphous alloy has a density in the range of about 4.5 to 6.5 g/cc. 12. The ceramic armor as described in claim 1, wherein the ceramic core is a material selected from the group consisting of Al 2O3, B4C, SiC, Si3N4 and TiB 2. 13. The ceramic armor as described in claim 1, wherein the ceramic core has a density of 99% or higher. 14. The ceramic armor as described in claim 1, wherein the amorphous alloy is based on ferrous metals wherein the hardness of the amorphous alloys is about 7.5 Gpa and higher. 15. The ceramic armor as described in claim 1, wherein the amorphous alloy further comprises a ductile metallic crystalline phase precipitate. 16. The ceramic armor as described in claim 1, wherein the metallic layer fully surrounds the ceramic core. 17. The ceramic armor as described in claim 1, wherein the metallic layer has a substantially uniform thickness. 18. The ceramic armor as described in claim 1, wherein the metallic layer is chemically bonded to the ceramic core. 19. The ceramic armor as described in claim 1, wherein the metallic layer applies a compressive stress of 800 Mpa or more to the ceramic core. 20. The ceramic armor as described in claim 1, wherein at least one face of the ceramic core is exposed. 21. The ceramic armor as described in claim 1, further comprising a plurality of independent ceramic cores at least partially encapsulated by the metallic layer. 22. The ceramic armor as described in claim 1, comprising a plurality of alternating layers of the ceramic core and the metallic layer. 23. The ceramic armor as described in claim 1, wherein the metallic layer is less than 2.0 mm.
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