JP2005206947A5 - - Google Patents

Claims (12)

  An organic layer containing an amorphous compound layer containing P, Zn or / and Al, and O, and an epoxy group-containing resin modified with a hydrazine derivative as an upper layer on the surface of a zinc-based plated steel sheet or an aluminum-based plated steel sheet A surface-treated steel sheet excellent in white rust resistance, characterized by having a surface-treated film having a film thickness of 0.02 to 5 μm, comprising a resin matrix layer. The surface-treated steel sheet having excellent white rust resistance according to claim 1 , wherein the surface-treated film further contains a silane compound. The surface-treated steel sheet having excellent white rust resistance according to claim 1 or 2 , wherein the surface-treated film contains a precipitation compound containing P, Zn or / and Al, and O. The surface-treated steel sheet having excellent white rust resistance according to any one of claims 1 to 3 , wherein the surface-treated film contains a precipitation compound containing P, Zn or / and Al, Si and O. A surface-treated steel sheet having a surface-treated film on the surface of a zinc-based plated steel sheet, wherein the molar ratio [Zn] / [P] of Zn and P in the amorphous compound layer is 0.9 to 1.4. The surface-treated steel sheet excellent in white rust resistance according to any one of claims 1 to 4 . A surface-treated steel sheet having a surface-treated film on the surface of a zinc-based plated steel sheet, wherein the molar ratio [Zn] / [P] of Zn and P in the precipitated compound contained in the surface-treated film is 0.9 to 1.4. The surface-treated steel sheet excellent in white rust resistance according to any one of claims 3 to 5 . A surface-treated steel sheet having a surface-treated film on the surface of a zinc-based plated steel sheet, wherein the molar ratio [Zn] / [P] of Zn and P in the precipitated compound contained in the surface-treated film is less than 1.0. A surface-treated steel sheet excellent in white rust resistance according to any one of claims 3 to 5 . Surface treatment film is further a non-chromium anticorrosive additives, any of the preceding claims, characterized in that it contains 0.1 to 50 parts by weight on a solids 100 parts by weight of the solid content of the organic resin A surface-treated steel sheet excellent in white rust resistance according to crab. As the surface treatment film is chromium-free rust-preventive agent, according to claim 8, characterized in that it contains one or more antirust additive selected from the group of the following (e1) ~ (e5) Surface-treated steel sheet with excellent white rust resistance.
(E1) Silicon oxide
(E2) Calcium compound (e3) Slightly soluble phosphate compound (e4) Molybdate compound (e5) Containing at least one S atom selected from triazoles, thiols, thiadiazoles, thiazoles, thiurams Organic compounds The surface-treated steel sheet having excellent white rust resistance according to claim 9 , wherein the surface-treated film contains calcium ion-exchanged silica as a non-chromium rust preventive additive. 11. The white resistance according to claim 1 , wherein the surface treatment film further contains a solid lubricant in a solid content of 1 to 50 parts by weight with respect to a solid content of 100 parts by weight of the organic resin. Surface-treated steel sheet with excellent rust. The surface-treated steel sheet according to any one of claims 1 to 11 , further comprising an organic resin film having a film thickness of 0.02 µm to less than 5 µm on an upper layer of the surface-treated film having a thickness of 0.02 µm to less than 5 µm. A surface-treated steel sheet excellent in white rust resistance, wherein the total film thickness of the organic resin film and the surface-treated film is 5 μm or less.