Abstract: A method of manufacturing a metal hybrid, heat-dissipating material includes the steps of (a) preparing a spherical metal powder and a flake graphite powder having an aspect ratio greater than 1, respectively; (b) preparing a powder mixture by inserting only the spherical metal powder and the flake graphite powder into a container, followed by dry mixing the powder mixture using a multi-axial mixing method for rotating or vibrating the container about two or more different rotation axes without any liquid input and without any mixing aids; (c) manufacturing a green compact by pressing the powder mixture; and (d) sintering the green compact to provide the metal hybrid, heat-dissipating material.

Abstract: Provided is a method of manufacturing a metal hybrid heat-dissipating material, the method including (a) preparing spherical metal powder and flake graphite powder having an aspect ratio greater than 1, (b) preparing mixture powder by inserting only the spherical metal powder and the flake graphite powder into a container and then mixing the metal powder and the graphite powder by using a multi-axial mixing method for rotating the container about two or more different rotation axes, (c) manufacturing a green compact by pressing the mixture powder, and (d) sintering the green compact.

Abstract: The present invention relates to a preparation method of a tungsten carbide sintered body for a friction stir welding tool used in a friction stir welding tool of a high melting point material such as steel, titanium and the like or a dissimilar material such as aluminum, magnesium-steel, titanium and the like. The preparation method comprises the following steps: filling a tungsten carbide (WC) powder in a mold made of a graphite material; mounting the mold filled with tungsten carbide powder in a chamber of a discharge plasma sintering apparatus; making a vacuum inside of the chamber; molding the tungsten carbide powder while maintaining a constant pressure inside the mold and increasing the temperature according to a set heat increase pattern until the temperature reaches a final target temperature; and cooling the inside of the chamber while maintaining the pressure pressurized in the mold after the molding step.

Abstract: A method for manufacturing a molybdenum sputtering target for a back electrode of a CIGS solar cell is provided to minimize thermal activating reaction by employing an electric discharge plasma sintering process. The method for manufacturing a molybdenum sputtering target for a back electrode of a CIGS solar cell comprises the steps of: charging molybdenum powder in a mold of graphite material, mounting the mold in a chamber of an electric discharge sintering apparatus, making a vacuum in the chamber, forming the molybdenum powder to the final target temperature while maintaining constant pressure on the molybdenum powder, heating the molybdenum powder in a predetermined heating pattern when reaching the final target temperature, maintaining the final target temperature for 1 to 10 minutes, and cooling the inside of the chamber while maintaining a constant pressure.

Abstract: The present invention relates to a preparation method of a tungsten carbide sintered body for a friction stir welding tool used in a friction stir welding tool of a high melting point material such as steel, titanium and the like or a dissimilar material such as aluminum, magnesium-steel, titanium and the like using pulsed current activation through a discharge plasma sintering apparatus. The preparation method comprises the following steps: filling a tungsten carbide (WC) powder in a mold made of a graphite material; mounting the mold filled with tungsten carbide powder in a chamber of a discharge plasma sintering apparatus; making a vacuum inside of the chamber; molding the tungsten carbide powder while maintaining a constant pressure inside the mold and increasing the temperature according to a set heat increase pattern until the temperature reaches a final target temperature; and cooling the inside of the chamber while maintaining the pressure pressurized in the mold after the molding step.

Abstract: A method for manufacturing a molybdenum sputtering target for a back electrode of a CIGS solar cell is provided to minimize thermal activating reaction by employing an electric discharge plasma sintering process. The method for manufacturing a molybdenum sputtering target for a back electrode of a CIGS solar cell comprises the steps of: charging molybdenum powder in a mold of graphite material, mounting the mold in a chamber of an electric discharge sintering apparatus, making a vacuum in the chamber, forming the molybdenum powder to the final target temperature while maintaining constant pressure on the molybdenum powder, heating the molybdenum powder in a predetermined heating pattern when reaching the final target temperature, maintaining the final target temperature for 1 to 10 minutes, and cooling the inside of the chamber while maintaining a constant pressure.

Abstract: Disclosed is a mounting unit including a bushing having a main part having a penetration hole extending in a lengthwise direction thereof and a flange portion expanding from an upper end of the main part, a stripper bolt having a head portion, a body portion having an insert portion to be inserted into or received in the penetration hole, and a male screw-threaded portion at a leading end of the insert portion Also disclosed is a brake unit assembled using the mounting unit that has good thermal and mechanical stability at a coupling portion between a disk rotor and a rotor hat.