Figure 14
(a) Virtual section through an open-cell ceramic sponge. (b) Virtual section and (c) 3D rendering of an aluminium alloy closed-cell foam sample (AlSi6Cu4). Both scans were performed with filtered white beam (peak X-ray energy: 36 keV) and a voxel size of 3.1 µm. Number of projections: 4000. Exposure time: 11 ms. Scan time: 1 min. Structural defects and the distribution of imperfections can be studied with micrometre resolution over large portions of the material, without the need for sample preparation. Foaming processes can be tracked in situ by hard synchrotron X-ray radiography as demonstrated at beamline ID19 of the ESRF (Mukherjee et al., 2017). |