Aluminum sheet material for separator of fuel cell and manufacturing method therefor

Abstract

According to an embodiment, the aluminum sheet material for a separator of a fuel cell is used for forming a separator applied to a fuel cell stack and comprises 9-10 wt % of Mg; and the balance of Al and inevitable impurities, wherein the aluminum sheet material has cube texture and an R-cube texture formed therein. An aluminum sheet material for a separator in a fuel cell retains a thickness of 0.5 mm or less and exhibits excellent yield strength and elongation, and a manufacturing method therefor.

What is claimed is: 
     
         1 . An aluminum sheet material for a separator of a fuel cell, the aluminum sheet material comprising:
 9-10 wt % of Magnesium (Mg), based on a total wt % of the aluminum sheet material; and   a balance of Aluminum (Al) and inevitable impurities,   wherein the aluminum sheet material has a formation of cube texture and a rotated cube texture therein.   
     
     
         2 . The aluminum sheet material of  claim 1 , further comprising at least one of, based on the total wt % of the aluminum sheet material, 0.12 wt % or less of Manganese (Mn) or 0.12 wt % or less of Chromium (Cr). 
     
     
         3 . The aluminum sheet material of  claim 1 , wherein the aluminum sheet material has a yield strength of 150 MPa or higher. 
     
     
         4 . The aluminum sheet material of  claim 1 , wherein the aluminum sheet material has an elongation of 28% or more. 
     
     
         5 . The aluminum sheet material of  claim 1 , wherein the aluminum sheet material has a thickness of 0.5 mm or less. 
     
     
         6 . The aluminum sheet material of  claim 1 , wherein the aluminum sheet material has a precipitation phase of Al 3 Mg 2  therein.