Patent ID: 7553376
Filing Date: 2009-06-30
Classification: B22F,C03C,C23C,Y10T

Abstract:
1. An apparatus for forming a composite structure of a brittle material on a substrate surface comprising: an aerosol generator including a source of powder of brittle material, polycrystalline fine particles with an average particle size of 0.1-5 μm, and which generates an aerosol in which the fine powder particles are scattered in a gas; a structure forming chamber with a reduced pressure; a nozzle for ejecting the aerosol into the structure forming chamber; and a shredder for shredding cohesion of the brittle material, polycrystalline fine powder particles in the aerosol, the shredder being provided between the aerosol generator and the nozzle; wherein the apparatus, including the aerosol generator, the nozzle, and the shredder, causes the aerosol to be ejected at such speed that the brittle material, polycrystalline fine particles in the aerosol deform or fracture when they collide with the substrate surface and form a composite structure having compactness of at least 70% on the substrate surface.