A method of selecting a corrosion-inhibiting substance includes selecting a corrosion-inhibiting substance to include a non-tungstate anodic corrosion inhibitor with respect to an amount of zinc in an aluminum alloy substrate that is to be coated with the corrosion-inhibiting substance.

A multi-step method for anti-corrosion pretreatment of components made from metallic materials, in which a wet chemical treatment with an aqueous composition (A) containing a dissolved and/or dispersed polymer P, which is substituted with heterocycles containing at least one quaternary nitrogen heteroatom, is followed by a conversion treatment based on water-soluble compounds of the elements Zr, Ti, and/or Si before further anti-corrosion coatings are optionally applied.

A water-based bonding primer composition and a method of applying the same onto a metallic surface prior to adhesive bonding. The bonding primer composition is a water-based dispersion containing water, one or more epoxy resins, one or more curing agents, a silane compound, a low amount of propylene carbonate (PC), and optional additives. The bonding primer composition can form substantially smooth films by spraying, and at the same time, meet environmental regulations and provide high bonding performance.

A water-based bonding primer composition and a method of applying the same onto a metallic surface prior to adhesive bonding. The bonding primer composition is a water-based dispersion containing water, one or more epoxy resins, one or more curing agents, a silane compound, a low amount of propylene carbonate (PC), and optional additives. The bonding primer composition can form substantially smooth films by spraying, and at the same time, meet environmental regulations and provide high bonding performance.

The present disclosure provides an aqueous binder composition for forming a sacrificial corrosion-protective coating, said composition being free of chromates and also preferably free of borates and molybdates. Said binder composition advantageously has a pH of less than 6 and comprises a binder, particles of at least one metal oxide and at least one metallic phosphate, said binder comprising a hydrolyzed organosilane oligomer. In addition, the proportion by weight of said particles of at least one metal oxide relative to the total dry weight of said binder composition is greater than or equal to 75%.

An imitation ceramic vase manufactured by a method which includes the following steps. (1) Applying a primer layer material on a vase made by a non-ceramic material, and letting the primer layer material to dry. (2) Applying at least one layer of first middle layer material on the primer layer material on the non-ceramic material vase. (3) Applying at least a layer of second middle layer material on the first middle layer material, and letting the second middle layer material to dry, the second middle layer material having a color which is different from that of the first middle later material. (4) Applying a surface layer material on at least one of the first middle layer material and the second middle layer material, and letting the surface layer material to dry. The surface layer material is a polyurethane imitating porcelain surface coating or an ultraviolet imitating porcelain surface coating.

The present application is directed to chromium-free anticorrosive coating composition and article made therefrom. The chromium-free anticorrosive coating composition comprises Component A, comprising a film-forming composition, a corrosion inhibiting composition, optional carriers and additional additives, wherein the corrosion inhibiting composition comprises at least one lithium-containing metal compound having a spatially stable crystalline structure, and at least one aluminum-containing phosphate; and optionally Component B, comprising a curing agent. The chromium-free anticorrosive coating composition according to the present application may be used as a primer or a direct-to-metal coating, especially suitable for a primer in a wet-on-wet system. The present application further discloses an article, comprising a metal substrate; and a coating formed of the above chromium-free anticorrosive coating composition which is directly applied to the metal substrate.

The present application is directed to chromium-free anticorrosive coating composition and article made therefrom. The chromium-free anticorrosive coating composition comprises Component A, comprising a film-forming composition, a corrosion inhibiting composition, optional carriers and additional additives, wherein the corrosion inhibiting composition comprises at least one lithium-containing metal compound having a spatially stable crystalline structure, and at least one aluminum-containing phosphate; and optionally Component B, comprising a curing agent. The chromium-free anticorrosive coating composition according to the present application may be used as a primer or a direct-to-metal coating, especially suitable for a primer in a wet-on-wet system. The present application further discloses an article, comprising a metal substrate; and a coating formed of the above chromium-free anticorrosive coating composition which is directly applied to the metal substrate.

The present application is directed to chromium-free anticorrosive coating composition and article made therefrom. The chromium-free anticorrosive coating composition comprises Component A, comprising a film-forming composition, a corrosion inhibiting composition, optional carriers and additional additives, wherein the corrosion inhibiting composition comprises anti-rust particles containing at least one phosphate compound of lithium and having a lithium content of at least 1.0% by weight; and optionally Component B, comprising a curing agent. The chromium-free anticorrosive coating composition according to the present application may be used as a primer or a direct-to-metal coating. The present application further discloses an article, comprising a metal substrate; and a coating formed of the above chromium-free anticorrosive coating composition which is directly applied to the metal substrate.

The present disclosure provides an aqueous binder composition for forming a sacrificial corrosion-protective coating, said composition being free of chromates and also preferably free of borates and molybdates. Said binder composition advantageously has a pH of less than 6 and comprises a binder, particles of at least one metal oxide and at least one metallic phosphate, said binder comprising a hydrolyzed organosilane oligomer. In addition, the proportion by weight of said particles of at least one metal oxide relative to the total dry weight of said binder composition is greater than or equal to 75%.