Abstract
Behaviors of a paint vehicle near the anodic oxide film-paint interface in the baking process were studied by means of transmission electron micrography and Auger electron spectroscopy. Fibrous materials are found down to approximately 0.7μm in dcpth from the interface both in TEM and Auger spectroscopy on the painted and baked anodic oxide film. If the anodic oxide film on which an unbaked paint film preliminarily prepared has been mounted is baked, same the fibrous materials are also found. This fact is an evidence for penetration of the paint component down to 0.7μm in depth in the micropores in the baking process but not in the electrodepositing process. This will be true on the viewpoint of the electrodeposition mechanism and the particle size of paint against the micropores.
