Metallographic Examination
Purpose
To observe under an optical microscope metallographic structures of investigated materials, for example to evaluate brazing quality, joint geometry, progress of corrosion, etc.
Procedure
Depending on the sample, an appropriate cross section is chosen and cut either with a band saw or with a high precision cutting wheel machine. The cut out samples are embedded in epoxy resin and gradually polished mirror to obtain a like surface.
The cross section can be observed and photographed under either non etched or etched conditions. Optionally, special electrochemical etching can be carried out to reveal the grains.
The results of optical microscope observations are summarized in a report including some interpretations of the observed microstructure features.
For more information, please download the brochure:
Metallographic Sample Preparation
