A process for surface treatment of metal substrates, including the steps of: providing a metal substrate including hydroxyl groups at its surface; bringing the metal substrate into contact with a solution of at least one organophosphorus compound to enable the reaction of the hydroxyl groups at the surface of the metal substrate with the organophosphorus compound to form a monomolecular layer over the surface and a second layer of physisorbed organophosphorus molecules at least preponderantly crystallized, the obtained treated substrate being coated with the organophosphorus compound in the form of a first monomolecular layer coating at least 15% of the surface of the substrate and in the form of a physisorbed second layer at least preponderantly crystallized. A treated metal substrate which may be obtained by the process thereof, corresponding solution and its use for treating metallic substrates to improve their tribological properties during their shaping, in particular their stamping.

A process for surface treatment of metal substrates, including the steps of: providing a metal substrate including hydroxyl groups at its surface; bringing the metal substrate into contact with a solution of at least one organophosphorus compound to enable the reaction of the hydroxyl groups at the surface of the metal substrate with the organophosphorus compound to form a monomolecular layer over the surface and a second layer of physisorbed organophosphorus molecules at least preponderantly crystallized, the obtained treated substrate being coated with the organophosphorus compound in the form of a first monomolecular layer coating at least 15% of the surface of the substrate and in the form of a physisorbed second layer at least preponderantly crystallized. A treated metal substrate which may be obtained by the process thereof, corresponding solution and its use for treating metallic substrates to improve their tribological properties during their shaping, in particular their stamping.

An anticorrosive agent including: a high-consistency material having a lubricant base oil and an amide compound, a composition of a phosphorus compound comprising one or more compounds represented by the general formulae (1) and (2) and a metal, and at least one kind of resin selected from a rosin-based resin, a terpene resin, a terpene phenol resin, a phenol resin, a coumarone-indene resin, and a petroleum resin, wherein a mass ratio of the high-consistency material and the composition is within a range of 50:50 to 98:2, and a content of resin is 2 to 20 parts by mass with respect to 100 parts by mass of the total of the high-consistency material and the composition.

Provided is a coated aluminum material for joining having an adhesion layer on a surface, and can exert excellent adhesion strength and corrosion resistance performance even under severe use conditions while being chromium-free. Provided is a coated aluminum material capable of producing the coated aluminum material for joining, and an aluminum resin composite material using the coated aluminum material for joining. Disclosed are a coated aluminum material for joining having an adhesion layer on a surface thereof and including a coated aluminum material and a silica-containing film formed on a surface of the aluminum material, the silica-containing film including 0.5 to 35 mass % of a silane coupling agent and having Si and P contents of 2 to 60, and 0.1 to 6.0 mg/m.sup.2, respectively, and P/Si mass ratio of P content and Si content of 0.02 to 0.15, and a coated aluminum material capable of producing the coated aluminum material for joining, and an aluminum resin composite material obtained using the coated aluminum material for joining.

Provided is a surface treatment method of metal powder and surface passivated metal powder. Herein, the surface treatment method uses passivation solution to treat the metal powder, to form a passivation film on the surface of the metal powder; the passivation solution passes through the metal powder by a flowing method; and the average particle size of the metal powder is 0.1?100 ?m. A problem in the prior art that the metal powder is easily oxidized is solved, and it is suitable for the field of metal anti-oxidation.

A method and composition for enhancing corrosion resistance, wear resistance, and contact resistance of a substrate comprising a copper or copper alloy surface. The composition comprises a phosphorus oxide compound selected from the group consisting of a phosphonic acid, a phosphonate salt, a phosphonate ester, a phosphoric acid, a phosphate salt, a phosphate ester, and mixtures thereof; a nitrogen-containing organic compound selected from the group consisting of primary amine, secondary amine, tertiary amine, and aromatic heterocycle comprising nitrogen; and an alcohol.

A method and composition for enhancing corrosion resistance, wear resistance, and contact resistance of a substrate comprising a copper or copper alloy surface. The composition comprises a phosphorus oxide compound selected from the group consisting of a phosphonic acid, a phosphonate salt, a phosphonate ester, a phosphoric acid, a phosphate salt, a phosphate ester, and mixtures thereof; a nitrogen-containing organic compound selected from the group consisting of primary amine, secondary amine, tertiary amine, and aromatic heterocycle comprising nitrogen; and an alcohol.

This steel sheet for containers includes a steel sheet, a Sn coated layer that is formed on at least one surface of the steel sheet, and a chemical treatment layer that is formed on the Sn coated layer. The Sn coated layer contains 300 mg/m.sup.2 to 5,600 mg/m.sup.2 of Sn in terms of an amount of metal Sn, and the chemical treatment layer contains 5 mg/m.sup.2 to 30 mg/m.sup.2 of a Zr compound in terms of an amount of metal Zr, an average roughness Ra of an outermost surface of the chemical treatment layer obtained with a scanning probe microscope is 10 nm to 100 nm. A variation amount in a yellowness index measured at one measurement point on the outermost surface of the chemical treatment layer is defined as YI represented by Equation (1), an average of absolute values of the YI obtained at a plurality of the measurement points included in a unit area of the outermost surface is 5.0 or less.

YI=YIYI.sub.0(1) where YI: the yellowness index measured after the steel sheet for containers is subjected to a retort treatment at a temperature of 130 C. for 5 hours, YI.sub.0: the yellowness index measured before the retort treatment

A process for surface treatment of metal substrates, including the steps of: providing a metal substrate including hydroxyl groups at its surface; bringing the metal substrate into contact with a solution of at least one organophosphorus compound to enable the reaction of the hydroxyl groups at the surface of the metal substrate with the organophosphorus compound to form a monomolecular layer over the surface and a second layer of physisorbed organophosphorus molecules at least preponderantly crystallized, the obtained treated substrate being coated with the organophosphorus compound in the form of a first monomolecular layer coating at least 15% of the surface of the substrate and in the form of a physisorbed second layer at least preponderantly crystallized. A treated metal substrate which may be obtained by the process thereof, corresponding solution and its use for treating metallic substrates to improve their tribological properties during their shaping, in particular their stamping.

A process for surface treatment of metal substrates, including the steps of: providing a metal substrate including hydroxyl groups at its surface; bringing the metal substrate into contact with a solution of at least one organophosphorus compound to enable the reaction of the hydroxyl groups at the surface of the metal substrate with the organophosphorus compound to form a monomolecular layer over the surface and a second layer of physisorbed organophosphorus molecules at least preponderantly crystallized, the obtained treated substrate being coated with the organophosphorus compound in the form of a first monomolecular layer coating at least 15% of the surface of the substrate and in the form of a physisorbed second layer at least preponderantly crystallized. A treated metal substrate which may be obtained by the process thereof, corresponding solution and its use for treating metallic substrates to improve their tribological properties during their shaping, in particular their stamping.