Definition - What does Heat Aging mean?
Heat aging refers to a process that is characterized by the melting or removal of a coating from a metal substrate due to elevated temperatures. This exposes the base metal to corrosion-causing conditions, thereby inhibiting its protection.
Corrosionpedia explains Heat Aging
Heat aging of a coated pipeline surface may result in the partial or complete removal of said coating. This ultimately results in exposing the pipeline to corrosion-causing elements and degradation.
Heat aging can be regulated for empirical purposes as an industrially accepted practice to examine a coating's response to temperature variations. A standardized test method for heat aging is ASTM 3045-92. The samples are placed in an aging oven. The temperature and duration is then specified for examination.