摘要:
A filler material, having a light weight, an increased mechanical strength, and various excellent characteristics such as damping ability, as well as a composite material and a structural material thereof are provided. The filler material comprises mats made of alumina fibers, and layers of hollow silica-alumina-microspheres which are dispersed of and affixed to the associated mat, with the mats and the layers alternately stacked with each other. The composite material comprises a matrix of aluminum in which the above-mentioned filler material is filled. The structural material, which contains therein a predetermined amount of microspheres enough to provide the material with a desired vibration amplitude-frequency characteristic, is applied to a head arm for supporting a magnetic head of a disk device, for instance.
摘要:
A method for fabricating long-length and/or large-sized dense filamentary reinforced monotapes. The method comprises forming a layered sandwich of matrix foils or encapsulating sheets plus foils around a reinforcing mat of collimated fibers and sealing the edges of the assembly. The sealing step is carried out with the sandwich formed to a predetermined arcuate configuration such that the sandwich can be coiled after edge sealing without buckling the encapsulating sheets or disturbing the filament alignment and orientation. The formation of the sealed, encapsulated preform can be carried out using continuous processing techniques. Subsequent processing, such as densification, can be performed with the preform in the coiled condition or after it is uncoiled to approximately the arcuate configuration of the sealing step.
摘要:
A fiber reinforced metal laminate and method of preparation. The metal layers are of aluminum or aluminum alloy. An aluminum containing solder layer is disposed on inner surfaces of the metal layers. The fibers are silicone-carbide, boron or silicon-carbide coated boron and located between the solder layers. These layers are heated under pressure to a temperature above the melting point of the solder and below the melting point of the metal layer.
摘要:
A preconsolidated tape of continuous, high strength filaments in a metal matrix is coated with a layer of adhesive polymer and cut into shaped plies. The coated plies are stacked in a mold and resin bonded together by the application of heat and pressure. Many of the desirable physical properties of a diffusion bonded metal matrix article are also found in the resin bonded metal matrix article of the subject invention. Also, the use of preconsolidated adhesive coated plies eliminates the need for high diffusion bonding pressures and temperatures, thereby cutting the time involved for the bonding and molding operation by a factor of 8 in some instances.
摘要:
High strength composite made of a plurality of pairs of alternating layers each of which is made by vapor deposition. The material of one group of layers is ductile, relative to the other. The composite may have a very high tensile strength or modulus of elasticity by so choosing the other material. The layers are usually between about 100A. and 10 microns thick and may have a very thin layer of a third material deposited therebetween to improve bonding.
摘要:
1. Apparatus for continuously producing metallic preform tape comprising: first supply means for providing a pair of substantially continuous metallic foils, each foil having an inner and an outer surface, means to move each for providing a plurality of substantially continuous filaments; means for aligning each of the filaments in a single plane disposed between the pair of metallic foils; means to move each of the filament at a given rate in the given direction; third supply means for providing at least one substantially continuous, plastically deformable, strippable film along at least one foil outer surface; means to move the film at the given rate in the given direction; and pressing means to press concurrently the film and foil toward and in contact with the filaments with a pressing force sufficient to deform plastically both the film and the foil around at least a portion of the filament outer surface.
摘要:
Components, such as airfoils for jet engines and other complex shaped parts, are provided by fiber-reinforced, high-strength, lightweight metal matrix composites economically prepared to close dimensional tolerances by applying matrix tapes in side-byside relation to a contoured metal base sheet or foil and building up a body of the desired thickness and shape with superimposed layers of such applied tapes, which are then covered with a contoured metal cover sheet or foil. Each layer may be bonded to the underlying layer by resistance diffusion bonding, and the cover sheet is bonded to the base sheet prior to hot pressing the entire assembly to the finished size and shape. The tapes are preferably composed of refractory filaments, such as boron, running lengthwise, and embedded in a metal matrix which is fully consolidated. The metal matrix and base and cover sheets are preferably composed of aluminum or titanium alloys, and the interior of the covered article is preferably evacuated prior to pressure bonding.
摘要:
An apparatus for use in and a method of compacting an article such as a fan or compressor blade made up of plies of a composite of high strength fibers in a metallic matrix with heat applied during the compacting in which a fluid pressure is applied to the article during the heating to assure a complete compaction and a removal of any voids in the article.
摘要:
A method of producing a composite material of aluminum and a carbon material includes applying a coating liquid containing carbon fibers, a binder, and a solvent for the binder in a mixed state on an aluminum foil to form a coating layer on the aluminum foil, removing the solvent contained in the coating layer to obtain a coated foil in which a carbon fiber layer is formed on the aluminum foil, a roll formation step of winding the coated foil in a roll shape to obtain a roll, removing the binder contained in the carbon fiber layer of the roll, and extruding the roll after the binder removal step. In the coating step, the coating liquid is applied on the aluminum foil so that a coating amount of the carbon fibers contained in the coating layer becomes equal to or less than 40 g/m2.
摘要:
A method of manufacturing an elongate insert configured to be integrated by CIC in a metal container, including coated yarns bonded together, the coated yarns being formed from metal-coated ceramic fibers. The method includes placing the coated yarns side by side in a bundle and pulling the fiber bundle through a shaping element so as to compact the fiber bundle transversely while forming the fiber bundle so as to have a defined cross section. A metal part incorporating a fibrous insert can be manufactured by the CIC technique.