《Table 2.EDS elemental analysis results for different areas of Cu foams》

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《Synthesis and characterization of copper foams through a powder metallurgy route using a compressible and lubricant space-holder material》

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wt%

To investigate the impurities that might have been left behind after evaporation of the acrawax，we conducted EDS analysis of the foams.Fig.8 shows two EDS spectra corresponding to the point on the cell wall and the other at the pore periphery.Here，no impurities were present except for some oxidation（Table 2）.The oxidation was less extensive in the cell wall regions and only slightly more extensive at the pore periphery.We therefore concluded from the EDS results that acrawax was volatilized completely without leaving any impurities within the metal foam matrix.