Korea Advanced Institute of Science and Technology

Hyundai Motor Company

Kia Motors Corporation

Lg Chem, Ltd

University of Texas System

Soon Hyung Hong

Ho Jin Ryu

Kyung Hwan Oh

Kyung Tae Kim

Si Won Yu

Hyo Soo Lee

Seung Il Cha

Jae Young Oh

Kyung Yoon Jeon

Jae Min Cha

Duck Joo Yang

Young Gyun Kim

Abdelaziz Rahy

Kyong Ha Lee

Gwang Hoon Jun

Yong Jin Jeong

Seong Woo Ryu

Won Je Park

Oh Yeoul Kwon

Chan Bin Mo

Hye Ji Im

Seong Hyun Hong

Hee Su Byeon

Jun Ho Lee

Sung Chan Yoo

Jin I Seok

Kyong Ho Lee

Zin Hyoung Lee

A basalt-fiber-reinforced thermoplastic composite material may include a thermoplastic resin and a basalt fiber as a reinforcement, wherein the basalt fiber is surface-treated with an alkoxy-group-substituted silane compound.

Basalt-fiber-reinforced thermoplastic composite material and method of manufacturing the same

Provided are a boron-nitride nanoplatelet(s) (BNNP)/metal nanocomposite powder and a preparing method thereof, the BNNP/metal nanocomposite powder including a base metal and BNNP dispersed in the base metal and configured to serve as a reinforcement of the base metal, wherein the BNNP are interposed between metal particles of the base metal in the form of a thin film of a plurality of layers and combined with the metal particles, and an amount of the BNNP in the base metal is greater than 0 vol % and less than 90 vol %.

Boron-nitride nanoplatelet(s)/metal nanocomposite powder and preparing method thereof

The present invention relates to a multi-layer graphene-metal-polymer sheet for shielding electromagnetic wave, wherein an electromagnetic wave shielding effect is able to be increased by using graphene-metal nanocomposite powder in which graphene and metal particles are bonded as a conductive material and by constituting a multi-layer structure instead of increasing a content of the graphene-metal nanocomposite powder.

Multi-layer graphene-metal-polymer sheet for shielding electromagnetic wave

The present disclosure relates to a graphene-nanomaterial complex, a flexible and stretchable complex including the same, and methods for manufacturing the complexes. A graphene-nanomaterial complex according to a first aspect of the present disclosure includes a plurality of graphenes and nanomaterials disposed between the graphenes, in which the graphenes are not disposed on the same plane to form a three-dimensional (3D) graphene structure, and the graphenes, the nanomaterials or both form an electrical network.

Graphene-nanomaterial complex, flexible and stretchable complex comprising the same and methods for manufacturing complexes

The present invention provides a method of making a carbon nanotubes fiber by providing a polyethylene terephthalate substrate; contacting the polyethylene terephthalate substrate with a polyvinyl alcohol polymer solution to form a polyvinyl alcohol polymer layer on the polyethylene terephthalate substrate; contacting the polyvinyl alcohol polymer layer with a carbon nanotube solution, wherein the carbon nanotubes solution comprises one or more carbon nanotubes; forming a nanotube layer on the polyvinyl alcohol polymer layer; delaminating the polyvinyl alcohol polymer layer from the polyethylene terephthalate substrate to release a composite fiber layer; stretching the composite fiber layer; and drying the composite fiber layer.

Fabrication method of composite carbon nanotube fibers/yarns

The invention relates to methods for fabricating ceramic nanocomposite powders, comprising a ceramic matrix and carbon nanotubes homogeneously dispersed in the ceramic matrix. The ceramic nanocomposite powders of the invention can prevent property deterioration due to agglomeration of carbon nanotubes.

Ceramic nanocomposite powders reinforced with carbon nanotubes and their fabrication process

The present invention relates to methods of preparing a polymer composite using a giant magnetostrictive material, and more particularly, to polymers composite having various improved properties, in which the advantageous structure of the giant magnetostrictive material produced by unidirectional solidification can be maintained by removing the eutectic phase from the magnetostrictive material and filling resulting voids with a polymer resin.

Method of preparing polymer composite using unidirectionally solidified giant magnetostrictive material

The present invention relates to a metal nanocomposite powder reinforced with carbon nanotubes and to a process of producing a metal nanocomposite powder homogeneously reinforced with carbon nanotubes in a metal matrix powder.

Method of producing metal nanocomposite powder reinforced with carbon nanotubes and the power prepared thereby

Disclosed is a method for producing an SiC preform of a high volume fraction used for the manufacture of a metal matrix composite. The method involves the steps of mixing SiC particles of different particle sizes each selected from a range of 0.2 to 48 &mgr;m with an organic binder, an inorganic binder, an aggregating agent, and distilled water, thereby producing a mixture, and stirring the mixture in accordance with a ball milling process, thereby producing a slurry containing the SiC particles, pouring the slurry containing the SiC particles into a mold having upper and lower molds respectively provided with absorbent bodies, and squeezing the slurry in the mold, thereby reducing a residual moisture content of the slurry, completely drying the slurry reduced in residual moisture content, thereby producing an SiC preform, and calcinating the SiC preform. The preform is impregnated with a metal matrix while maintaining a high reinforcement volume fraction of 70 vol % or more. Accordingly, this preform can be widely used for fundamental materials of metal matrix composites used to manufacture electronic packaging components and aerospace components requiring a low thermal expansion coefficient and a high thermal conductivity.

Method for producing SiC preform with high volume fraction

Disclosed is a process for making an oxide dispersion-strengthened tungsten heavy alloy by mechanical alloying that includes the steps of: adding 0.1 to 5 wt. % of Y O powder to a mixed powder comprising more than 90 wt. % of tungsten powder, and nickel and iron powders for the rest; and subjecting the resulting mixture to a mechanical alloying to prepare an oxide dispersion-strengthened tungsten heavy alloy powder. The oxide dispersion-strengthened tungsten heavy alloy prepared by the mechanical alloying is characterized in that fine Y O particles are uniformly dispersed in the matrix which are stable at high temperatures results in enhanced high-temperature strength and a reduction of the shearing strain of the fraction during high strain rate deformation.

Process for making oxide dispersion-strengthened tungsten heavy alloy by mechanical alloying

The present invention relates to a method of preparing a preform with a high volume fraction of SiC particles. A slurry containing SiC particles and binders is ball-milled and pressed in an apparatus to give a primary preform. This primary preform is dried at room temperature and then, at a high temperature. The dried primary preform is subjected to calcination to prepare the preform. In the apparatus, which comprises a bottom die; a top mold with a cavity, placed on the bottom die, an upper punch for pressing a material for the preform in the cavity; and two water-absorbers, one being inserted between the bottom die and the top mold, the other being placed on the top mold, the slurry is introduced in the cavity and pressed by the punch while the water is absorbed in the absorbers or drained through a gap between the bottom die and the top mold, thereby improving the volume fraction of SiC particles. The preform can be used as a fundamental material in producing metal matrix composites having a high thermal conductivity and a low coefficient of thermal expansion, suitable for the application for, e.g., electronic packaging and space-air structures.

Process for preparing a preform with high volume fraction SiC

A stainless maraging steel and process having high strength, high toughness and high corrosion resistance. The alloy consists of from 8 to 12% by weight Cr, 7 to 12% by weight Ni, 2 to 6% by weight W, 0.1 to 0.5% by weight Al, 0.1 to 0.4% by weight Ti, and the balance iron.

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Daejeon, South Korea

Soon Hyung Hong