Abstract: An article of manufacture and a process for making the article by the anodization of aluminum and aluminum alloy workpieces to provide corrosion-, heat- and abrasion-resistant ceramic coatings comprising titanium and/or zirconium oxides, and the subsequent coating of the anodized workpiece with a second coating such as polytetrafluoroethylene (“PTFE”) or silicone containing coatings. The invention is especially useful for forming longer life coatings on aluminum substrates by pre-coating the substrate with an anodized layer of titanium and/or zirconium oxide that provides excellent corrosion-, heat- and abrasion-resistance in a hard yet flexible film.

Abstract: A ceramic coated heat exchanger component and method for making the ceramic coated heat exchanger component by creating porous metal oxide coatings on an aluminum surface of the heat exchanger component by plasma electrochemical deposition of a metal oxide on the aluminum surface and layering an odor neutralization agent on the porous metal oxide ceramic coatings to form an odor remediation ceramic coating on the heat exchanger.

Abstract: An article of manufacture and a process for making the article by generating corrosion-, heat- and abrasion-resistant ceramic coatings comprising titanium and/or zirconium dioxide using direct and alternating current on anodes comprising aluminum and/or titanium. Optionally, the article is coated with additional layers, such as paint, after deposition of the ceramic coating.

Abstract: An article of manufacture and a process for making the article by the anodization of aluminum and aluminum alloy workpieces to provide corrosion-, heat- and abrasion-resistant ceramic coatings comprising titanium and/or zirconium oxides, and the subsequent coating of the anodized workpiece with polytetrafluoroethylene (“PTFE”) or silicone containing coatings. The invention is especially useful for forming longer life PTFE coatings on aluminum substrates by pre-coating the substrate with an anodized layer of titanium and/or zirconium oxide that provides excellent corrosion-, heat- and abrasion-resistance in a hard yet flexible film.

Abstract: An article of manufacture and a process for making the article by generating corrosion-, heat- and abrasion-resistant ceramic coatings comprising titanium and/or zirconium dioxide using direct and alternating current on anodes comprising aluminum and/or titanium. Optionally, the article is coated with additional layers, such as paint, after deposition of the ceramic coating.

Abstract: An article of manufacture and a process for making the article by the anodization of aluminum and aluminum alloy workpieces to provide corrosion-, heat- and abrasion-resistant ceramic coatings comprising titanium and/or zirconium oxides, and the subsequent coating of the anodized workpiece with polytetrafluoroethylene (“PTFE”) or silicone containing coatings. The invention is especially useful for forming longer life PTFE coatings on aluminum substrates by pre-coating the substrate with an anodized layer of titanium and/or zirconium oxide that provides excellent corrosion-, heat- and abrasion-resistance in a hard yet flexible film.

Abstract: Using aqueous electrolytes containing complex fluorides or oxyfluorides such as fluorozirconates and fluorotitanates, ferrous metal articles and non-metallic articles having a first coating containing aluminum may be rapidly anodized to form a second protective surface coating. White coatings may be formed on articles using pulsed direct current or alternating current.

Abstract: Using aqueous electrolytes containing complex fluorides or oxyfluorides such as fluorozirconates and fluorotitanates, ferrous metal articles and non-metallic articles having a first coating containing aluminum may be rapidly anodized to form a second protective surface coating. White coatings may be formed on articles using pulsed direct current or alternating current.

Abstract: A protective coating is formed on a metallic surface by contacting the surface with an aqueous solution of fluorometallate followed by an aqueous solution containing vanadate ions. The process does not require the use of any organic substances, but provides a corrosion resistant surface having good heat conductivity.

Abstract: Using pulsed current and relatively low average voltages, articles containing light metals such as magnesium may be rapidly anodized to form protective surface coatings. The anodizing solutions employed may contain phosphate, permanganate, silicate, zirconate, vanadate, titanate, hydroxide, alkali metal fluoride and/or complex fluoride, optionally with other components present.

Abstract: In at least one aspect, the invention relates to an entirely or substantially chromium-free conversion coating composition and process for conversion coating metal surfaces that provides corrosion resistance. In at least another aspect, the present invention relates to an article having a metal surface that is at least partially coated with an entirely or substantially chromium-free conversion coating that provides corrosion resistance. In certain embodiments, the conversion coating composition comprises water and (A) dissolved fluorometallate anions selected from the group consisting of TiF6−2, ZrF6−2, HfF6−2, SiF6−2, AlF6−3, GeF6−2, SnF6−2, BF4−, and mixtures thereof and (B) a water-soluble polymer which is a Mannich adduct of poly(4-vinyl phenol) and N-methyl ethanolamine. In other embodiments, the composition also comprises (C) a water-soluble polymer which is a Mannich adduct of poly(4-vinyl phenol) and N-methyl glucamine.

Abstract: Using aqueous electrolytes containing complex fluorides or oxyfluorides such as fluorozirconates, fluorotitanates, and fluorosilicates, articles containing light metals such as magnesium and aluminum may be rapidly anodized to form protective surface coatings. White coatings may be formed on aluminum articles using pulsed direct current or alternating current. When the article to be anodized is comprised of magnesium, pulsed direct current having a relatively low average voltage is preferably used.

Abstract: Corrosion resistant, hydrophilic coatings on the surface of aluminum and aluminum alloys may be formed using aqueous compositions containing fluorometallates such as H2TiF6 or H2ZrF6 and vanadium compounds such as decavanadates. To minimize the odor evolved from the conversion coatings it is preferred for a specified oxide, hydroxide, carbonate, or alkoxide to also be present in or added to the aqueous composition.

Abstract: The present invention comprises a method for treating one or more multi-metal articles. The method comprises exposing the one or more articles to a first treatment composition capable of providing a conversion coating on steel- and zinc-based metal, and exposing the one or more articles to a second treatment coating composition suitable for providing a conversion coating on aluminum-based metal articles. Preferably, the first treatment composition comprises a zinc-phosphate conversion coating comprising, zinc ion, phosphate ion, manganese ion, and fluoride ion. Preferably, the second treatment composition comprises a ceramic composite treatment composition.

Abstract: A protective coating is formed on a metallic surface by contacting the surface with an aqueous solution of fluoromet-allate followed by an aqueous solution containing vanadate ions. The process does not require the use of any organic substances, but provides a corrosion resistant surface having good heat conductivity.

Abstract: In at least one aspect, the invention relates to an entirely or substantially chromium-free conversion coating composition and process for conversion coating metal surfaces that provides corrosion resistance. In at least another aspect, the present invention relates to an article having a metal surface that is at least partially coated with an entirely or substantially chromium-free conversion coating that provides corrosion resistance. In certain embodiments, the conversion coating composition comprises water and (A) dissolved fluorometallate anions selected from the group consisting of TiF6−2, ZrF6−2, HfF6−2, SiF6−2, AlF6−3, GeF6−2, SnF6−2, BF4−, and mixtures thereof and (B) a water-soluble polymer which is a Mannich adduct of poly(4-vinyl phenol) and N-methyl ethanolamine. In other embodiments, the composition also comprises (C) a water-soluble polymer which is a Mannich adduct of poly(4-vinyl phenol) and N-methyl glucamine.

Abstract: A process for importing corrosion resistance to the surface for an aluminum substrate by contacting the aluminum substrate with an aqueous solution containing at least one of terafluoroboric acid, hexafluorosilisic acid, hexafluorotitanic acid, hexafluorozirconic acid, hexafluorohafnic acid and soluble, partially or totally neutralized salts and vanadate anions.

Abstract: Using aqueous electrolytes containing complex fluorides or oxyfluorides such as fluorozirconates, fluorotitanates, and fluorosilicates, articles containing light metals such as magnesium and aluminum may be rapidly anodized to form protective surface coatings. White coatings may be formed on aluminum articles using pulsed direct current or alternating current. When the article to be anodized is comprised of magnesium, pulsed direct current having a relatively low average voltage is preferably used.

Abstract: Using pulsed current and relatively low average voltages, articles containing light metals such as magnesium may be rapidly anodized to form protective surface coatings. The anodizing solutions employed may contain phosphate, pennanganate, silicate, zirconate, vanadate, titanate and/or complex fluoride, optionally with other components present.

Abstract: Using pulsed current and relatively low peak ceiling voltage, articles containing light metals such as magnesium may be rapidly anodized to form protective surface coatings. The anodizing solutions employed may contain phosphate, permanganate, silicate, zirconate, titanate and/or complex fluoride, optionally with other components present.