Contaminated raw materials as a source of defects in building ceramics – analysis by means of scanning ­electron microscopy

The talk gives a concise insight into the analysis method of scanning electron microscopy. The set-up and function of scanning electron microscope are described and interaction between the electron beam and the sample explained. Based on various examples, e.g. efflorescence on a natural red roofing tile, a melting effect on a clinker brick and coarse-grained components as a cause of spalling, the procedure for testing with a scanning electron microscope and the possibilities for evaluation of the images are detailed.

Dipl.-Ing. Maria Graf, KI Keramik-Institut GmbH

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