A trivalent chromate coating having improved surface smoothness is used as an alternative to a hexavalent chromate coating serving as a protective coating. A piping member of a steel for an automotive fuel line is coated with a multilayer coating consistin...

A thermal barrier coating (22) for an underlying metal substrate (14) of articles (10) that operate at, or are exposed, to high temperatures, as well as being exposed to environmental contaminant compositions. This coating (22) comprises an optional inner ...