Method for measuring amount of residual resin material in porous metal body

A method for measuring an amount of a residual resin material in a porous metal body,

• the porous metal body being prepared by forming a metal-resin-containing layer containing a metal material and a resin material having a melting point lower than a melting point of the metal material and by removing the resin material from the metal-resin-containing layer,
• the method comprising:
• a first thermal analysis step of carrying out a differential thermal analysis of a plurality of the metal-resin-containing layers, the resin material amounts of which are known and different from each other,
• a correlation obtaining step of measuring heights of sample peaks observed at a temperature in the first thermal analysis step, to obtain a correlation between the resin material amounts and the sample peak heights,
• a second thermal analysis step of carrying out a differential thermal analysis of the porous metal body, an amount of the residual resin material of which is not known, and
• a residual amount measurement step of measuring a height of a peak observed in the second thermal analysis step at the same temperature as in the correlation obtaining step, to obtain the amount of the residual resin material in the porous metal body based on the measured peak height and the correlation.