Laboratory analysis of metallic alloys by Optical Emission Spectroscopy (OES)

Spark optical emission spectroscopy (OES) is a quick, simple and non-destructive analytical technique which is used to determine the chemical composition of a metallic part and to examine their quality.

The SEO technique consists in passing an electrical current through an electrode and a metallic sample. Atoms and ions energized by plasma create an emission spectrum specific to each element. The emitted wave lengths are unique to each chemical element and the intensity of an emission spectrum is indicative of the concentration of an element in the sample.