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US 6,475,939 B1Granted
Porcelain enamel for aluminized steel
AssigneeFerro France - S.A.R.L.
InventorsThierry Souchard, Alain Aronica
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Abstract
The present invention provides a composition for use in forming an adherent, brilliant white, chemically and mechanically resistant porcelain enamel coating on aluminized steel. The composition includes a self-opacifying glass frit component which includes high levels of titanium dioxide, lithium oxide, sodium oxide, and potassium oxide. The composition is able to produce a brilliant white finish on aluminized steel in one coat without the addition of titanium oxide during milling.
Claims3
A porcelain enamel coating composition for use on aluminized steel comprising:
- a glass frit component comprising by weight
- from about 27% to about 33% SiO2,
- from about 25% to about 31% TiO2,
- from about 10% to about 15% Na2O,
- from about 8% to about 15% B2O3,
- from about 5% to about 12% K2O,
- from about 4% to about 8% Li2O,
- from about 2% to about 6% Sb2O3,
- from about 0% to about 50% P2O5,
- from about 0% to about 3% BaO,
- from about 0% to about 2% MgO, and
- from about 0% to about 2% Al2O3.
9 more elements
Dependencies are inferred from the claim text.