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Porous body and method for producing same

A manufacturing method and porous body technology, applied in the manufacture of tools, ceramic products, casting and molding equipment, etc.

Inactive Publication Date: 2014-07-16
TOYOTA JIDOSHA KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In addition, in batteries, the separator made of a porous body may be damaged by heat, impact, etc., and it is desired to increase the strength of the separator

Method used

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  • Porous body and method for producing same
  • Porous body and method for producing same
  • Porous body and method for producing same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0073] Experiments were conducted using a casting mold having the same structure as the porous body 1 . No release agent was applied to the molding surface of the mold.

[0074] In this case, the molten metal has reached the right end of the cavity.

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Abstract

Provided are a high-strength porous body and a method for producing the same. A porous body 1 has a carbon foam body 10, which is a porous material whose primary component is carbon, and a carbon film 20 formed on the surface of the carbon foam body 10, wherein the carbon film 20 comprises multiple microscopic carbon fibers 21 21..., which are fibrous nanocarbons such as carbon nanofibers, carbon nanotubes, carbon nanocoils, or carbon nanofilaments, and multiple fullerenes 22 22..., which are virtually spherical nanocarbons formed from multiple carbon atoms.

Description

technical field [0001] The present invention relates to a porous body and a manufacturing method thereof. Background technique [0002] Conventionally, porous bodies have been used in casting molds, battery separators, and the like. [0003] Patent Document 1 discloses a casting mold (mold) in which a porous body (porous material) made of metal powder such as stainless steel is used in a part of the cavity. [0004] According to the mold described in Patent Document 1, since the gas in the cavity can be discharged to the outside through the pores of the porous body, casting can be performed well without leaving the gas in the molten metal. [0005] However, the mold disclosed in Patent Document 1 has a problem that the strength is lower than that of the conventional mold due to the porous structure having many pores. For example, during casting, the mold may expand or contract due to the heat of molten metal or the like, and cracks may be generated in the mold accordingly....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/02B22C1/00B22C9/06C04B41/85
CPCB22C9/061B22D25/04B29C33/3814B29K2907/04B29L2031/757C04B41/009C04B41/5001C04B41/85C01B32/05Y10T428/249967C04B35/52C04B38/00C04B41/4549C04B41/4596
Inventor 外崎修司古川雄一
Owner TOYOTA JIDOSHA KK
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