Porous aluminum body, heat transfer material, and heat exchange device

Abstract

Provided is a porous aluminum body capable of being used as a heat transfer material having a very large specific surface area, a good heat-exchange efficiency, and a low pressure drop of a gas. The porous aluminum body contains aluminum as a main component. The porous aluminum body has a three-dimensional network structure and has a specific surface area (Y) represented by a (Formula) below. Y=a ×exp(0.06 X )  (Formula) (In the (Formula), Y represents a specific surface area [m 2 /m 3 ], X represents the number of cells [per inch], and a represents a number of 100 or more and 1,000 or less.)

1 . A porous aluminum body comprising aluminum as a main component,
 wherein the porous aluminum body has a three-dimensional network structure and has a specific surface area (Y) represented by a (Formula) below:
     Y=a ×exp(0.06 X )  (Formula)
 
   (where, in the (Formula), Y represents a specific surface area [m 2 /m 3 ], X represents the number of cells [per inch], and a represents a number of 270 or more and 1,000 or less.)   
     
     
         2 . The porous aluminum body according to  claim 1 , wherein the porous aluminum body has a hollow skeleton. 
     
     
         3 . The porous aluminum body according to  claim 1 , wherein aluminum contained in the porous aluminum body has a purity of 99.7% by mass or more. 
     
     
         4 . The porous aluminum body according to  claim 1 , wherein a weight per volume of the porous aluminum body is 0.1 g/cm 3  or more and 1.0 g/cm 3  or less. 
     
     
         5 . A heat transfer material comprising the porous aluminum body according to  claim 1 . 
     
     
         6 . A heat exchange device comprising the porous aluminum body according to  claim 1 .