Colored shaped aluminum article and method for manufacturing same

Abstract

A shaped aluminum article has an anodized film formed on a surface, where a coloring pigment is filled in fine pores formed on the anodized film, achieving sufficient coloring.

1 . A shaped aluminum article having an anodized film formed on a surface, where a pigment is filled in fine pores formed on the anodized film at a density of 2 mg to 30 mg per 1 square decimeter. 
     
     
         2 . A shaped aluminum article according to  claim 1 , wherein a diameter of an opening of the fine pore is 50 to 300 nm. 
     
     
         3 . A shaped aluminum article according to  claim 1 , wherein a length of the fine pore in a depth direction of the shaped article is 5 to 50 μm. 
     
     
         4 . A shaped aluminum article according to  claim 1 , wherein the anodized film on the surface of the shaped aluminum article has been formed using a method that includes an anodization treatment stage implemented under a condition of constant current, and a subsequent anodization treatment stage implemented at a constant voltage. 
     
     
         5 . A method of coloring a surface of shaped aluminum article, whereby an shaped aluminum article is given an anodization treatment that includes an anodization treatment stage implemented under a condition of constant current, and a subsequent anodization treatment stage implemented at a constant voltage, which is followed by a process of filling a pigment in fine pores that have been formed. 
     
     
         6 . A method of coloring a surface of shaped aluminum article according to  claim 5 , wherein the process of filling a pigment is an electrophoretic migration process using a pigment dispersion liquid and/or pigment sol-containing liquid. 
     
     
         7 . A shaped aluminum article according to  claim 2 , wherein a length of the fine pore in a depth direction of the shaped article is 5 to 50 μm. 
     
     
         8 . A shaped aluminum article according to  claim 2 , wherein the anodized film on the surface of the shaped aluminum article has been formed using a method that includes an anodization treatment stage implemented under a condition of constant current, and a subsequent anodization treatment stage implemented at a constant voltage. 
     
     
         9 . A shaped aluminum article according to  claim 3 , wherein the anodized film on the surface of the shaped aluminum article has been formed using a method that includes an anodization treatment stage implemented under a condition of constant current, and a subsequent anodization treatment stage implemented at a constant voltage. 
     
     
         10 . A shaped aluminum article according to  claim 7 , wherein the anodized film on the surface of the shaped aluminum article has been formed using a method that includes an anodization treatment stage implemented under a condition of constant current, and a subsequent anodization treatment stage implemented at a constant voltage.