Manganese Phosphate Coatings
Established 1945
Scanning Electron Microscope: The Other Guys
Other Guy's Bad Coating

This is a scanning electron microscope image of the competition's coating. Note that the huge gaps between the manganese phosphate crystals forms no barrier. (Click image to enlarge)

Other Guy's Bad Coating SEM Valence

This is a scan of specific elements by valence. Note that the coater is attemping to use a tri-valent chrome (Cr) rinse as the barrier...and it does not come close to meeting the milspec corrosion resistance requirments. (Click image to enlarge)