BaCr4O8

Barium chromate (BaCr₄O₈) is an inorganic ceramic compound belonging to the chromate family, typically used as a pigment and corrosion inhibitor in industrial coatings and surface treatments. It finds application in aerospace, automotive, and marine industries where corrosion protection of aluminum and steel substrates is critical, though environmental and health regulations have restricted its use in many regions due to hexavalent chromium content. Engineers may select this material for legacy systems or specialized applications where its strong inhibitive properties justify compliance overhead, though safer chromate alternatives are increasingly preferred.