Metal-based structure or nanoparticles containing hydrogen, and method for producing same

Patent metadata

Field	Value
Publication number	US-2016311685-A1
Application number	US-201415104571-A
Country	US
Kind code	A1
Filing date	Dec 12, 2014
Priority date	Dec 18, 2013
Publication date	Oct 27, 2016
Grant date	—

Abstract

To provide a metal-based structure or nanoparticles whose homogeneity is not deteriorated and whose sticking formation is easy, and a production method thereof with a high safety. A metal-based structure comprises a hydrogen compound, cluster, or an aggregate thereof, represented by the general formula: M m H. The M is a metal-based atom. The m is an integer of 3 or more and 300 or less. H is a hydrogen atom.

First claim

1 . A metal-based structure comprising a hydrogen compound, a cluster, or an aggregate thereof, represented by the general formula: M m H
wherein M is a metal-based atom; m is an integer of 3 or more and 300 or less; and H is a hydrogen atom.

2 . The metal-based structure according to claim 1 , wherein the M is a metal atom, and the m is any of 4, 6, 8, 12, 20, or 30.

3 . A metal-based structure comprising a metal-based amorphous phase which is amorphized by containing hydrogen.

4 . A metal-based structure which contains hydrogen, wherein
a content A of the hydrogen, % by atom, is a value satisfying the following formulae (1) and (2), based on the whole mass of the metal-based structure.
Y= 100×1/( X+ 1) wherein X= 4,6,8,12,20, or 30   (1)

0.85 Y≦A≦ 1.15 Y   (2)

5 . The metal-based structure according to any of claims 1 to 4 , wherein at least apart of the hydrogen are non-diffusible hydrogen which is contained in the metal-based structure after the metal-based structure is heated at 200° C. for 2 minutes.

6 . A metal-based structure which contains hydrogen, wherein
at least a part of the hydrogen are non-diffusible hydrogen contained in the metal-based structure after the metal-based structure is heated at 200° C. for 2 minutes, and a content of the non-diffusible hydrogen is 0.01% by mass or more, or 0.41% by atom or more, based on the whole mass of the metal-based structure.

7 . A metal-based structure which contains hydrogen, wherein
a content of the hydrogen is 0.095% by mass or more, or 5.04% by atom or more, based on the whole mass of the structure.

8 . The metal-based structure according to any of claims 1 to 7 , wherein the metal-based structure comprises an amorphous phase at least in part.

9 . The metal-based structure according to claim 8 , wherein the amorphous phase contains hydrogen.

10 . A metal-based structure which comprises a metal-based amorphous phase containing hydrogen, wherein
a content of the hydrogen, after the metal-based structure is heated at 200° C. for 2 minutes, is 0.01% by mass or more, or 0.41% by atom or more, based on the whole mass of the metal-based structure.

11 . The metal-based structure according to any of claims 3 , 6 , or 10 , wherein the hydrogen content is 0.037% by mass or more and 0.59% by mass or less, or 2.0% by atom or more and 25% by atom or less, based on the whole mass of the metal-based structure.

12 . The metal-based structure according to any of claims 1 to 11 , wherein
the metal-based structure is a metal-based structure comprising a metal as a main component, and
the metal is a ferromagnetic substance.

13 . The metal-based structure according to any of claims 1 to 12 , wherein the metal-based structure comprises a metal element as a main component.

14 . The metal-based structure according to claim 13 , wherein the metal element comprises a single element.

15 . The metal-based structure according to any of claims 1 to 14 , wherein the metal-based structure contains iron.

16 . The metal-based structure according to any of claims 1 to 15 , wherein at least apart of the metal-based structure comprises a particle structure.

17 . The metal-based structure according to any of claims 1 to 16 , wherein at least a part of the metal-based structure comprises a wire-shaped structure.

18 . The metal-based structure according to any of claims 1 to 17 , wherein the metal-based structure comprises a formless amorphous phase, which fills up a cavity in the metal-based structure, or consists of the formless amorphous phase.

19 . The metal-based structure according to claim 16 or 17 , wherein the particle structure or the wire-shaped structure is formed by a self-granulating reaction.

20 . The metal-based structure according to any of claims 1 to 19 , wherein
the metal-based structure comprises a hydrogen compound, a cluster, or an aggregate thereof, which comprises a regular polyhedron structure or an almost regular polyhedron structure, and
in the regular polyhedron structure, a metal atom is disposed on each vertex of the regular polyhedron structure, or on the middle of each surface or each side, centered on a hydrogen atom.

21 . A metal-based structure, which is a metal-based structure bound body of a metal-based structure according to any of claims 1 to 20 , wherein the metal-based structure bound body comprises a shape anisotropy.

22 . The metal-based structure or the metal-based structure bound body according to any of claims 1 to 21 , which is used for a 3D printer.

23 . A method for producing a metal-based structure, which is a structure obtained by reducing a reducible substance which is a substance containing a metal-based reducible component containing at least one metal element and/or semi-metal element, comprising a step of controlling at least one of the following (i) to (iii) by controlling a hydrogen content based on the whole mass of the metal-based structure, the hydrogen being contained in the metal-based structure:
(i) controlling formation of an amorphous phase which the metal-based structure comprises; (ii) controlling a particle shape of the metal-based structure; and (iii) controlling a composition of the metal-based structure.

24 . A method for producing a metal-based structure according to any one of claims 1 to 22 , which is a method for producing a metal-based structure, which is a structure obtained by reducing, in liquid, a reducible substance which is a substance containing a metal-based reducible component containing at least one metal element and/or semi-metal element, comprising a step of controlling at least one of the following (i) to (iii) by controlling a hydrogen content based on the whole mass of the metal-based structure, the hydrogen being contained in the metal-based structure:
(i) controlling formation of an amorphous phase which the metal-based structure comprises;
(ii) controlling a particle shape of the metal-based structure; and
(iii) controlling a composition of the metal-based structure.

25 . The method for producing a metal-based structure according to claim 23 or 24 , wherein
the hydrogen content is controlled to 0.41% by atom or more, thereby to form the metal-based structure comprising a metal-based amorphous phase and/or,
the hydrogen content is controlled to 2.0% by atom or more, thereby to form the metal-based structure comprising a metal-based amorphous phase wherein the metal-based amorphous phase comprises a metal element as a main component and/or,
the hydrogen content is controlled to 3.3% by atom or more, thereby to form the metal-based structure substantially comprising a metal-based amorphous phase alone wherein the metal-based amorphous phase comprises a metal element as a main component and/or,
the hydrogen content is controlled to 5.5% by atom or more, thereby to form the metal-based structure substantially comprising a metal-based amorphous phase alone wherein the metal-based amorphous phase comprises a metal element as a main component and a least apart of the metal-based amorphous phase is formless.

26 . The method for producing a metal-based structure according to any of claims 23 to 25 , wherein the hydrogen content is controlled to 0.41% by atom or more and 13% by atom or less, thereby to control an average length of a particle structure or an average short axis length of a wi

Assignees

• Taguchi Kohei
• Public Univ Corp Yokohama City Univ

Inventors

• Taguchi Kohei
• Shinozaki Kazuteru
• Takayasu Satoshi

Classifications

• B22F1/148

  Agglomerating · CPC title

• B22F9/26 Primary

  using gaseous reductors · CPC title

• B22F1/08

  Metallic powder characterised by particles having an amorphous microstructure · CPC title

• B22F9/24

  starting from liquid metal compounds, e.g. solutions · CPC title

• B01J37/16

  Reducing · CPC title