METHODS OF MAKING CRYSTALLINE TITANIA COATINGS
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Abstract
A method is provided for shifting the amorphous to crystalline transition temperature of a titania coating. The method includes adding a dopant, such as Mo, V, Al, Zn, Zr, Li, K, Co, La, Ca, Ba, Si, Ag, Cu, Ni, Mg, Mn, Cd, Fe, Cr, Tb, Y, Sn, Ge, and/or Pd to a titania-containing material. The doped material can then be applied, e.g., by spray pyrolysis, onto a substrate. A coated article is also provided.
8 Citations
37 Claims
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1-25. -25. (canceled)
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26. A method of making a crystalline titania coating on a glass substrate by aqueous spray pyrolysis without post-heating, comprising the steps of:
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providing a glass substrate having a temperature less than or equal to 1100°
F.;directing an aqueous coating composition toward the glass substrate, the coating composition comprising a titania precursor material and at least one dopant selected from at least one of Mo, V, Al, Zn, Zr, Li, K, Co, La, Ca, Ba, Si, Ag, Cu, Ni, Mg, Mn, Cd, Fe, Cr, Tb, Y, Sn, Ge, and Pd, and mixtures or combinations thereof, wherein the dopant is present in an amount less than 10 atomic percent, and wherein the coating composition pyrolyzes on the substrate to form the crystalline titania coating without subsequent post-heating. - View Dependent Claims (27, 28, 29, 30, 31, 32, 33, 34)
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35. A pigment, comprising:
a vanadium doped titania material having a crystalline structure comprising a monoclinic crystal system. - View Dependent Claims (36, 37)
Specification