SEM EDS

Elemental Identification

The process works by bombarding a sample with an electron beam and analyzing the resulting characteristic X-rays. During SEM EDS testing, the energy of the emitted X-rays is measured to identify the elements present on the surface. This allows for both qualitative and quantitative mapping of chemical distribution across a microscopic area.

The resulting spectrum provides a clear breakdown of the local atomic percentages, which helps identify alloy compositions. Such mapping is invaluable for detecting localized corrosion or material segregation.

Failure Analysis

The determination of the root cause of component failure often relies on microstructural examination. In failure investigations, SEM EDS is used to inspect fracture surfaces and identify foreign particles or inclusions. This provides direct evidence of whether a failure was caused by material defects or environmental exposure.

Calibration Integrity

The accuracy of the quantitative data relies on the proper adjustment of the detection equipment. Before performing SEM EDS, technicians must run reference standards of known composition to verify the detector’s energy calibration. This step ensures that light elements such as carbon and oxygen are correctly identified and measured.

It establishes the standard reliability required for compliance reports submitted to clients.