Architectural Paint Investigation – SEM/EDX
- Scanning Electron Microscope with Energy-dispersive x-ray spectroscopy (SEM-EDX)
If required more advanced material analysis may be commissioned from specialist laboratories. The technical data will be interpreted by HIRC in the context of the project and other research.
The Scanning Electron Microscope (SEM) image of a paint sample removed from an 18th century chapel reveals the accumulated layers of traditional paint beneath the post WWII modern paint. The EDX spectrum of the modern top layer (Layer A) reveals the complex composition of modern paints.
The pigment was also identified using polarising light microscopy. A dispersion of the paint layer was examined under transmitted polarising light for the characteristic properties of Naples yellow