NF EN 623-2

<p>This document specifies methods for the determination of the apparent solid density, bulk density, apparent porosity and geometric bulk density of fine ceramics, including all ceramic matrix composites.</p> <p>Two methods are described and are designated as Methods A and B, as follows:</p> <p>— Method A: Determination of bulk density, apparent solid density and apparent porosity by liquid displacement (Archimedes' method).</p> <p>NOTE 1 This method is not appropriate for the determination of an apparent porosity greater than 10 %. For materials with higher porosity, the accuracy of the measurement might not be satisfactory. This method might also not give a satisfactory open porosity result if it is less than 0,5 %.</p> <p>NOTE 2 This method is also not suitable for materials which are known to have an average pore size of greater than 600 µm.</p> <p>— Method B: Determination of bulk density only, by measurement of geometric dimensions and mass.</p>