Thermal spraying. Metallic & other inorganic coatings. Zinc, aluminium & their alloys Metal coatings, Spraying (coating), Coatings, Zinc, Zinc alloys, Aluminium, Aluminium alloys, Protective coatings, Corrosion protection, Iron, Steels, Metal spraying, Thickness, Thickness measurement, Surface treatment, Cut-through tests, Adhesion tests, Testing conditions, Test equipment, Sealing processes, Painting