To provide a Sn-based plated steel sheet capable of exhibiting superior corrosion resistance, yellowing resistance, coating film adhesiveness, and sulphide stain resistance without using a chromate film. A Sn-based plated steel sheet of the present invention includes: a steel sheet; a Sn-based plating layer located on at least one surface of the steel sheet; and a coating layer located on the Sn-based plating layer, wherein the Sn-based plating layer contains 1.0 g/m.sup.2 to 15.0 g/m.sup.2 of Sn per side in terms of metal Sn, the coating layer contains zirconium oxide, and a content of the zirconium oxide is 1.0 mg/m.sup.2 to 10.0 mg/m.sup.2 per side in terms of metal Zr, the zirconium oxide includes zirconium oxide with an amorphous structure, and a crystalline layer whose main component is zirconium oxide with a crystalline structure is present on an upper layer of the zirconium oxide with the amorphous structure.

Disclosed are a Co.sub.3O.sub.4 nanosheet loaded stainless steel mesh, a preparation method and an application thereof. The method includes: S1, depositing a cobalt hydroxide nanosheet array on a surface of a stainless steel mesh by an electrochemical deposition method, and obtaining the stainless steel mesh deposited with the cobalt hydroxide nanosheet array; and S2, obtaining the Co.sub.3O.sub.4 nanosheet loaded stainless steel mesh by calcining the stainless steel mesh deposited with the cobalt hydroxide nanosheet array.

Disclosed are a Co.sub.3O.sub.4 nanosheet loaded stainless steel mesh, a preparation method and an application thereof. The method includes: S1, depositing a cobalt hydroxide nanosheet array on a surface of a stainless steel mesh by an electrochemical deposition method, and obtaining the stainless steel mesh deposited with the cobalt hydroxide nanosheet array; and S2, obtaining the Co.sub.3O.sub.4 nanosheet loaded stainless steel mesh by calcining the stainless steel mesh deposited with the cobalt hydroxide nanosheet array.

A coating method for a clad steel in which stainless sheets are combined on adjacent surfaces of an aluminum sheet may include preparing the clad steel, preparing a coating solution in which an epoxy resin and titanium dioxide (TiO.sub.2) powder are combined in an acrylic resin, etching the clad steel to improve adhesion property between the coating solution and the clad steel, heating the clad steel, and performing electrodeposition by immersing the clad steel in the coating solution.

A coating method for a clad steel in which stainless sheets are combined on adjacent surfaces of an aluminum sheet may include preparing the clad steel, preparing a coating solution in which an epoxy resin and titanium dioxide (TiO.sub.2) powder are combined in an acrylic resin, etching the clad steel to improve adhesion property between the coating solution and the clad steel, heating the clad steel, and performing electrodeposition by immersing the clad steel in the coating solution.

The present invention relates to the lead-zirconate-titanate (PZT) amorphous alloy plating solution which may be used to form a PZT amorphous alloy film having excellent mechanical and physical properties and a method for plating a PZT amorphous alloy using the same. The PZT amorphous alloy plating solution may include a Pb precursor, a Zr precursor, and a Ti precursor. 10˜50 parts by weight of the Zr precursor and 5˜30 parts by weight of the Ti precursor may be included based on 100 parts by weight of the Pb precursor. Accordingly, electrical conductivity can be improved because the PZT amorphous alloy plating solution has a structure which has low crystallinity or which is amorphous. Furthermore, excellent electrical characteristics can be achieved because the PZT amorphous alloy plating solution has excellent conductivity or chemical stability.

A surface-treated steel sheet for cans forming a coating of a compound containing chiefly Zr and containing F, the amount of Zr being 80 to 200 mg/m.sup.2 and the amount of F being not less than 12 mg/m.sup.2 in the coating on the surface that becomes the outer surface side of the can. The surface-treated steel sheet is capable of effectively preventing the resin coating from peeling on the outer surface side of the can at dented portions.

A surface-treated steel sheet for cans forming a coating of a compound containing chiefly Zr and containing F, the amount of Zr being 80 to 200 mg/m.sup.2 and the amount of F being not less than 12 mg/m.sup.2 in the coating on the surface that becomes the outer surface side of the can. The surface-treated steel sheet is capable of effectively preventing the resin coating from peeling on the outer surface side of the can at dented portions.

Provided is a chemical treatment steel sheet including a steel sheet; a composite coated layer which is formed on at least one surface of the steel sheet, and contains 2 to 200 mg/m.sup.2 of Ni in terms of an amount of metal Ni and 0.1 to 10 g/m.sup.2 of Sn in terms of an amount of metal Sn, and in which an island-shaped Sn coated layer is formed on an Fe—Ni—Sn alloy layer; and a chemical treatment layer that is formed on the composite coated layer, and contains a 0.01 to 0.1 mg/m.sup.2 of Zr compounds in terms of an amount of metal Zr and 0.01 to 5 mg/m.sup.2 of phosphate compounds in terms of an amount of P.

Provided is a chemical treatment steel sheet including a steel sheet; a composite coated layer which is formed on at least one surface of the steel sheet, and contains 2 to 200 mg/m.sup.2 of Ni in terms of an amount of metal Ni and 0.1 to 10 g/m.sup.2 of Sn in terms of an amount of metal Sn, and in which an island-shaped Sn coated layer is formed on an Fe—Ni—Sn alloy layer; and a chemical treatment layer that is formed on the composite coated layer, and contains a 0.01 to 0.1 mg/m.sup.2 of Zr compounds in terms of an amount of metal Zr and 0.01 to 5 mg/m.sup.2 of phosphate compounds in terms of an amount of P.