How XRF Determines Coating Thickness
XRF coating measurements rely on the relationship between coating thickness and the intensity of fluorescent X-rays emitted from the coating and underlying material. As coating thickness changes, the X-ray signals from these layers change in a measurable way.
This technique is used for applications such as metal plating, protective coatings, and manufacturing quality control. It can help assess coating consistency and confirm whether specified thickness requirements are being met without physically removing the coating.
Not every coating can be measured using XRF. Suitability depends on the elemental composition of the coating and substrate, their thickness, and whether the analyser can distinguish their X-ray signals. Multilayer coatings, complex materials, and very thin or thick coatings may require specialised calibration or dedicated coating measurement equipment.
Assessing XRF for Coating Measurements
For more detail on the technique, review PAS’s overview of X-Ray Fluorescence technology. To investigate suitable instruments, explore the available handheld XRF analysers from Portable Analytical Solutions, or contact our team to discuss coating materials, thickness ranges, and measurement requirements.