Non-stick coated steel article

A coated article comprising a substrate of steel on which is applied a first layer of substantially non-porous ceramic frit, a second layer of porous ceramic frit, a third layer of fluorocarbon primer, and optionally a fourth layer of fluorocarbon topcoat, wherein said primer is derived from a coating composition consisting essentially of:

• a. 20-90%, by weight of total solids, a particulate fluorocarbon polymer;
• b. 10-80%, by weight of total solids, colloidal silica having a pH of 8.4-9.9 at 25.degree. C., whose particles having a size of 5-100 millimicrons and specific surface area of 125-420 square meters per gram;
• c. 1.5-3.5%, by weight of total composition, alcohol containing 4 or more carbon atoms, said alcohol being miscible with water;
• d. 1.0-1.5%, by weight of total composition, fatty acid containing 8 or more carbon atoms;
• e. 0.3-0.7%, by weight of total composition, amine having the formula ##STR2## wherein R.sub.1 contains 1 to 6 carbon atoms and may contain other functional groups, and R.sub.2 and R.sub.3 contain one to six carbon atoms or hydrogen;
• f. 1-4%, by weight of total solids, of silicone resins,
• g. 1-4%, by weight of the total solids, of a polymeric adjunct;
• h. up to 40%, by weight of the tortal solids, of pigment;
• and
• i. a liquid carrier.