Method of producing aluminum structure and aluminum structure
Provided is a method of producing an aluminum structure using a porous resin molded body having a three-dimensional network structure, with which it is possible to form an aluminum structure having a low oxide content in the surface of aluminum (i.e., having an oxide film with a small thickness), and in particular, it is possible to obtain an aluminum porous body that has a large area. The method includes a step of preparing an aluminum-coated resin molded body in which an aluminum layer is formed, directly or with another layer therebetween, on a surface of a resin molded body composed of urethane, and a heat treatment step in which the aluminum-coated resin molded body is subjected to heat treatment at a temperature equal to or higher than 270° C. and lower than 660° C. to decompose the resin molded body.
1. A method of producing an aluminum structure comprising:
a step of preparing an aluminum-coated resin molded body in which an aluminum layer is formed, directly or with another layer therebetween, on a surface of a resin molded body composed of urethane; and
a heat treatment step in which the aluminum-coated resin molded body is subjected to heat treatment at a temperature equal to or higher than 380° C. and lower than 660° C. to decompose the resin molded body,
wherein the step of preparing an aluminum-coated resin molded body includes a conductivity-imparting step in which electrical conductivity is imparted to the surface of the resin molded body and a step of forming the aluminum layer by performing aluminum plating in a molten salt, and
the thickness of the aluminum layer is 1 to 100 μm.
2. The method of producing an aluminum structure according to claim 1 , wherein, in the heat treatment step, heat treatment is performed at a temperature equal to or higher than 380° C. and lower than 500° C.
3. The method of producing an aluminum structure according to claim 1 , wherein the resin molded body is a resin porous body having a three-dimensional network structure.
4. The method of producing an aluminum structure according to claim 1 , further comprising, after the heat treatment step, a solvent treatment step in which the aluminum structure is brought into contact with an organic solvent to remove a decomposition product of the resin molded body.
5. The method of producing an aluminum structure according to claim 1 , wherein the heat treatment step is performed in an inert gas atmosphere.
6. The method of producing an aluminum structure according to claim 1 , wherein the conductivity-imparting step is a step of attaching aluminum to the surface of the resin molded body by a vapor-phase method.