Glow Discharge Spectroscopy for Coatings Analysis

Understanding the composition of surface layers and coatings is vital for industries ranging from automotive to aerospace. Whether evaluating thin films or thick thermochemical treatments, manufacturers need a detailed map of chemical changes from the surface to the substrate to identify contamination, migration, or defects. Traditional wet chemical methods are often too slow, while other surface analysis techniques can be prohibitively expensive.

Glow Discharge-Optical Emission Spectroscopy (GD-OES) has emerged as a modern solution for high-performance coatings analysis. By utilizing a low-pressure plasma to uniformly sputter material from the sample surface, LECO GDS instruments provide continuous depth profiling from a few nanometers to over 100 micrometers.

This technique allows for the direct analysis of both conductive and non-conductive samples without prior preparation. In just a matter of minutes, users receive a complete chemical composition map, enabling the rapid identification of surface cleanliness, layer thickness, and elemental diffusion at interfaces. This makes GDS an essential tool for optimizing processes such as galvanizing, plating, and nitriding.