Material, method for producing a material and use thereof
The present invention relates to a material including a matrix and at least one reinforcing element introduced therein, wherein the matrix is selected from the group consisting of plastic, carbon, ceramic, glass, clay, metal, and combinations thereof, and the reinforcing element is spherical to ellipsoidal in shape and has an onionskin-like structure. The present invention further relates to a method for producing a material including steps preparing at least one spherical to ellipsoidal reinforcing element having an onionskin-type structure, and introducing the reinforcing element into a matrix, wherein the matrix is selected from the group consisting of plastic, carbon, ceramic, glass, clay, metal, and combinations thereof. The present invention further relates to use of the material in a friction application, as abrasion protection, an injection molding part, a support plate, catalyst substrate or as bone replacement material.
1. A material comprising:
a matrix selected from a group consisting of at least one of plastic, carbon, ceramic, glass, clay and metal, the material including approximately 10 to 50% by weight of said matrix relative to a total weight of the material; and
at least one reinforcing element introduced into said matrix and having a spherical to ellipsoidal shape and an onionskin-like structure, said at least one reinforcing element having been pretreated with an oxidation protection agent, wherein said reinforcing element is coke in spherulitic form and having an onionskin-like structure, the material including approximately 50 to 90% by weight of said reinforcing element relative to said total weight of the material.
2. The material according to claim 1 , wherein said coke has a substantially high hardness and is poorly graphitizable and an average inter-layer distance of said onion-like structure of said at least one layer of said reinforcing element after a heat treatment at approximately 2800° C. is at least equal to approximately 0.34 nm at a graphitization degree of at most 46.5% Maire and Mehring.
3. The material according to claim 2 , wherein said spherulitic coke includes carbon black.
4. The material according to claim 1 , wherein said matrix is silicon carbide.
5. The material according to claim 1 , wherein said reinforcing element has a length to diameter ratio of approximately 1 to 10.
6. The material according to claim 1 , wherein said reinforcing element has been thermally pretreated.
7. The material according to claim 6 , further comprising at least one filler material.
8. The material according to claim 1 , wherein a grain size of said reinforcing element is at least approximately 1 μm.
9. The material according to claim 1 , wherein the material includes approximately 30 to 95% by weight of said reinforcing element and approximately 5 to 70% by weight of said matrix relative to a total weight of the material.
10. The material according to claim 1 , wherein the material includes approximately 60 to 75% by weight of said reinforcing element and approximately 25 to 40% by weight of said matrix relative to said total weight of the material.
11. The material according to claim 10 , wherein the material includes up to approximately 40% by weight of a filler material relative to said total weight of the material.