Film and method for manufacturing same

a technology of film and film, applied in the field of film, can solve the problems of film deterioration and film is easily peeled off, and achieve the effect of minimizing deterioration and separation of film

Inactive Publication Date: 2014-07-31
TOYOTA JIDOSHA KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Benefits of technology

[0013]The present invention makes it possible to minimize deterioration and separation of a film.

Problems solved by technology

However, if the technique described in Patent Literature 1 is used, in the case of incomplete combination of the carbon film and the fullerenes, the fullerenes are removed by alkaline solvent, and the film deteriorates.
Moreover, the film is easily peeled off because the film has insufficient strength.

Method used

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  • Film and method for manufacturing same
  • Film and method for manufacturing same
  • Film and method for manufacturing same

Examples

Experimental program
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Effect test

example

[0082]First, the oil-based release agent was applied to the molding surface of the die on which the initial film 100 was formed, and thereby the initial film 100 was under the non-oxidizing atmosphere.

[0083]Next, the cavity of the die was filled with molten aluminum alloy of 600° C., and the initial film 100 was heated for 5 seconds at 4000 kcal / m2 on the heat-transfer interface (the molding surface of the die) with heat-transfer coefficient of 6000 W / m2K (600° C., 50 MPa).

[0084]Finally, the solidified metal (cast metal) was released from the die.

[0085]By performing the above-mentioned process 1000 times, the film 1 was produced.

[0086]Mapping analysis of the film 1 was performed using the EPMA, similarly to the initial film 100.

[0087]FIG. 5 shows a result of the mapping analysis of the film 1 with the EPMA. FIG. 5(a) shows carbon present in the film 1, and FIG. 5(b) shows sulfur present in the film 1.

[0088]As shown in FIGS. 5(a) and 5(b), in the carbon film 40 of the film 1, sulfur ...

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Abstract

Disclosed are a film with high strength which does not easily deteriorate, and a method for manufacturing the film. A step for manufacturing a film formed on the molding surface of a die, includes an initial film-forming step for forming, on the molding surface of the die, an initial film having a carbon film which has a plurality of nano-carbons, and to which a plurality of fullerenes are applied, and a nitrogen compound layer and a sulfurized layer which are situated between the carbon film and the die, and an intermittent heating step for intermittently heating the initial film formed in the initial film-forming step under a non-oxidizing atmosphere.

Description

TECHNICAL FIELD[0001]The present invention relates to a film formed on the surface of an iron-based material, and to a method for manufacturing the film.BACKGROUND ART[0002]Conventionally, publicly known is a technique for forming a predetermined film on the molding surface of a die (the surface of an iron-based material) in order to accomplish decrease of mold-release resistance and the like in die casting (for example, see Patent Literature 1).[0003]Patent Literature 1 discloses a technique for forming a film on the molding surface of a die by applying fullerenes to a carbon film having nano-carbons such as carbon nanotube.[0004]According to Patent Literature 1, by filling apertures in the carbon film with the fullerenes to smoothen the uneven surface of the carbon film, mold-release resistance is reduced.[0005]However, if the technique described in Patent Literature 1 is used, in the case of incomplete combination of the carbon film and the fullerenes, the fullerenes are removed ...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): B22C9/12
CPCB22C9/12C23C8/28C23C8/02C23C8/80B22C9/061
Inventor FURUKAWA, YUICHISOTOZAKI, SHUJI
Owner TOYOTA JIDOSHA KK
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