Nissei Plastic Industrial Co., Ltd.

Nagaoka University of Technology

Atsushi Kato

Masashi Suganuma

Tomoyuki Sato

Keita Arai

Daisuke Shiba

Taku Kawano

Shigeharu Kamado

Kelta Arai

Daisuke Tsushima

A method for manufacturing a composite metal alloy. An Mg material as an alloy base material and a carbon nanomaterial are mixed together to obtain a mixture in which the Mg material is covered with particles of the carbon nanomaterial. The mixture of the Mg material and carbon nanomaterial are sintered to obtain an Mg sintered compact including the carbon nanomaterial. The Mg sintered compact including the carbon nanomaterial is dissolved to obtain a melt of the composite metal alloy.

Method for manufacturing composite metal alloy and method for manufacturing article from composite metal

A method for producing a carbon nanocomposite metal material with increased carbon nanomaterial dispersibility and increased binding between carbon nanomaterial and matrix metal stock is disclosed. A preform obtained by mixing a matrix metal stock and microparticulate-coated carbon nanomaterial without the need for a dispersant and then compacting the material is maintained for a set time period at a temperature that is at or above the melting point of the matrix metal stock. In this state, the heat-treated body is reduced to a temperature that allows hot working, and a compacting treatment is performed.

Method for producing carbon nanocomposite metal material and method for producing metal article molded therefrom

A method of manufacturing a metal-carbon nanocomposite material in which aluminum is used as the matrix is disclosed. The manufacturing method comprises mixing a Si-coated carbon nanomaterial () and a powdered Mg material (), heating the mixture to a melting point of the Mg material or higher, and thereafter cooling the mixture to obtain an Mg-carbon nanomaterial (). A metal-carbon nanomaterial in which Al is used as the matrix is provided by cooling the Mg-carbon nanomaterial and molten Al () in a mixed state.

Method of manufacturing metal-carbon nanocomposite material

In a method for manufacturing a composite-metal-forming material, heating a metal material a Mg alloy or an Al alloy is heated to a temperature in a region where a solid and a liquid are both present to thereby yield a semi-molten metal material in a semi-molten state. An additive material is introduced to the semi-molten metal material and kneading is performed to obtain a composite metal material. The composite metal material is heated to a solution temperature of the metal material and a solution treatment is performed to thereby yield a composite-metal-forming material. The additive material introduced is a carbon nano-composite material formed by mixing a carbon nanomaterial and a metal powder to obtain a carbon nano-composite metal powder, compacting the carbon nano-composite metal powder into a solid to obtain a preform, heating the preform in a vacuum, inert gas, or non-oxidizing gas atmosphere to a temperature in a region where a solid and a liquid are both present, and applying pressure to the heated preform.

Method for manufacturing material for forming composite metal and method for manufacturing article formed from composite metal

A method for manufacturing a composite metal material combined with a nanocarbon material comprises heating a metal alloy to a half-melted state in which both liquid and solid phases are present. Next, a nongraphitized nanocarbon material is added to the half-melted metal alloy and stirred to form a composite metal material combined with a nanocarbon.

Method for manufacturing composite metal material and method for manufacturing composite-metal molded article

A composite material composed of nanocarbon materials and metallic materials for a matrix is extrusion molded to have the nanocarbon materials oriented in one direction.

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Nagano, Japan

Atsushi Kato