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Patent
Korea Institute of Machinery and Materials | Date: 2016-11-29

A method of manufacturing a silicon carbide (SiC) sintered body and a SiC sintered body obtained by the method are provided. The method includes: preparing a composite powder by subjecting a SiC raw material and a sintering aid raw material to mechanical alloying; and sintering the composite powder, wherein the sintering aid is at least one selected from the group consisting of an AlC-based material, an AlBC-based material, and a BC-based material. Accordingly, a SiC sintered body that can be sintered at low temperature, can be densified, and has high strength and high electrical conductivity can be prepared.


Patent
Korea Institute of Machinery and Materials | Date: 2017-03-22

A method of manufacturing a wire grid polarizer includes: preparing a stamp having a nanostructure body at one surface and forming a mask layer with anisotropic vapor deposition at the one surface; forming a metal film on a substrate; transferring a mask layer of an upper portion of a nanostructure body in the mask layer onto the metal film; and patterning the metal film into metal lines by removing a portion that is not covered with the mask layer in the metal film with dry etching.


Patent
Korea Institute of Machinery and Materials | Date: 2017-03-22

The present invention relates to a linear expander that can structurally offset vibration and noise caused from piston movement by moving pistons combined to two linear generators symmetrically provided in a body portion where a suction valve and a discharge valve are respectively provided to bilaterally opposite directions, and accordingly the expander has a simple structure and motion stability of the compressor can be improved.


Patent
Korea Institute of Machinery and Materials | Date: 2017-02-15

The present invention provides a plasma nozzle atomizing and pyrolyzing a liquid supplied by generating plasma therein to be mixed and sprayed with a gas with a fast speed by heat due to a plasma arc and flow excited chemical species. The plasma nozzle according to an exemplary embodiment of the present invention includes: a first housing discharging a supplied gas to a narrowed discharging port and being electrically grounded; a second housing provided near the discharging port of the first housing and spraying a liquid supplied through a spraying hole in the discharging port; and a driving electrode built in the first housing, forming a discharge gap along with the discharging port at an end part, and applied with a driving voltage.


Patent
Korea Institute of Machinery and Materials | Date: 2016-06-30

A device for lubrication and noise attenuation of a gear box for driving a hydraulic pressure pump of an extra-large sized excavator according to an exemplary embodiment of the present invention includes: a case housing where a lubricant is provided in the bottom side thereof; a driving gear provided in the case housing and rotating by a driving torque of an engine; first and second driven gears engaged to lateral sides of the driving gear and rotating in the case housing; and a third driven gear engaged to an upper side of the driving gear and rotating, wherein the case housing may include a lubrication plate provided in an inclined manner from an upper side of the first driven gear to one side of the third driven gear such that the lubricant drawn up by rotation torque of the first driven gear is churned to an inner surface of the lubrication plate and then dropped at the upper side of the first driven gear and one side of the third driven gear for lubrication.


Patent
Korea Institute of Machinery and Materials | Date: 2015-10-29

An apparatus for manufacturing a blade is provided. The apparatus for manufacturing a blade includes: an arm module including a pressing unit pivoting around a first shaft; a molding module including a molding die pressed by the pressing unit and molding bulk metallic glass (BMG) to a blade; and a drawing module pulling an end portion of the BMG exposed to the outside of the molding die to form an edge of the blade, wherein the drawing module includes a pair of drawing tools pulling one end portion of the BMG in two directions.


Patent
Korea Institute of Machinery and Materials | Date: 2015-12-11

A blood vessel connecting apparatus connects a first blood vessel to a second blood vessel. The blood vessel connecting apparatus includes an elastic connection part and a fixing part. The elastic connection part has an elastic restoring force, is inserted in an end of the second blood vessel and extends along an extending direction of the second blood vessel. The fixing part fixes the elastic connection part to an inside of the second blood vessel.


Patent
Korea Institute of Machinery and Materials | Date: 2015-10-29

According to an exemplary embodiment of the present invention, a trocar is provided. The trocar includes: a sharp end; at least three concave cutting edges extended from the sharp end; and at least three concave cutting surfaces forming the sharp end and the at least three cutting edges.


Patent
Korea Institute of Machinery and Materials | Date: 2016-05-13

The present disclosure related to a thin metal film substrate and a method for preparing the same and more particularly, to a thin metal film substrate including a substrate; and a thin metal film comprising Ag or an Ag alloy formed on the substrate, wherein the thin metal film is formed to have preferred orientation corresponding to the preferred orientation of the substrate during the initial growth. The thin metal film substrate according to an example grows in a 2D continuous thin film from the initial growth to provide excellent light transmittance and conductivity.


Patent
Korea Institute of Machinery and Materials | Date: 2017-01-06

There is provided an electrostatic precipitation device of explosive exhaust gas particles that can remove by unipolar charging a particulate material such as SiO_(2 )that is included in an explosive exhaust gas by charging the explosive exhaust gas with an indirect charging method of charging through ions that are injected from the outside.

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