TH106948A - Tinplate, tinplate and methods for their manufacture - Google Patents

Abstract

DC60 (11/01/50) Tin plated mild steel sheet comprises a tin plating layer on at least one surface of the mild steel sheet, and a chemically modified coating containing phosphorus and tin on the plating layer is provided. In the above mild steel sheet, the coating amount of the chemically modified coating per surface is 1. 0 to 50 mg/m2. In terms of phosphorus, the tin/phosphorus atom ratio obtained from the intensity of the P2p peak and the tin/phosphorus atom ratio obtained from the intensity of the Sn3d peak are 1. 0 to 1. 5, the intensity is measured at the surface using the x-ray photoelectron spectroscopic method, and the oxygen/phosphorus atom ratio obtained from the intensity of the P2p peak and the oxygen/phosphorus atom ratio obtained from the intensity of the 01s peak are 4. 0 to 9. 0. The chemically modified coating with phosphoric acid as the basis This tin plated mild steel sheet can inhibit the deterioration caused by the growth of tin oxide layer on the surface, instead of the conventional chromate coating. Tin plated mild steel sheet consists of a tin plating layer on at least one surface of the mild steel sheet, and a chemical modification coating containing phosphorus and tin on the plating layer is provided. In the above mild steel sheet, the coating amount of chemical modification coating per surface is 1. 0 to 50 mg/m2. In terms of phosphorus, the tin/phosphorus atomic ratio obtained from the intensity of P2p peaks and the tin/phosphorus atomic ratio obtained from the intensity of Sn3d peaks are 1. 0 to 1. 5, the intensity is measured at the surface using a spectroscopic method. The X-ray photoelectron spectroscopic method, and the O2p/P2s peak intensity-derived ...

Claims (3)

Claims (all) which will not appear on the advertisement page: Amendment 19/11/2018 Page 1 of 1 page Clause 1. Tinplate containing: a layer with tin on at least One side of the skin Of mild steel sheets; And chemically modified surfaces containing phosphorus, tin, oxygen and hydrogen resulting from electrolytic action. Cathode on the plating layer, where the putty amount of the plastering Chemical changes to surface were 1.0 to 50 mg / m2 in terms of phosphorus, tin / phosphorus atomic ratios obtained from P2p peak intensity and obtained tin / phosphorus atomic ratios. From the Sn3d peak intensity of the chemically altered putty Being in the range of 1.0 to 1.5, the intensity is measured at the surface of the sheet. By using the spectroscopy method of electron particles that were Emitted by X-rays, and atomic ratios The oxygen / phosphorus obtained from the P2p peak intensity and the oxygen / phosphorus atomic ratio obtained from the O1s peak intensity is in the range of 4.0 to 9.0 ------------------. -------------------------------------------------- ------------ 1.Tin-plated steel sheet consists of: a layer of tin that contains at least one surface. Of mild steel sheets; And chemically altered surfaces containing phosphorus and tin on the plating layer where the putty content of the chemically altered surface was 1.0 to 50 mg / m2 in terms of phosphorus, the resulting tin / phosphorus atomic ratio. From the intensity of P2p peak and atomic ratio Tin / phosphorus obtained from the Sn3d peak intensity of chemically altered surface putty was in the range of 1.0 to 1.5, the intensity was measured at the surface of the sheet. Using spectroscopy, electrons, x-rays, and atomic ratios. The oxygen / phosphorus obtained from the P2p peak intensity and the oxygen / phosphorus atomic ratio obtained from the 01s peak intensity was in the range of 4.0 to 9.0. 2. Tin-plated steel plate according to Clause 1. Where the IOH / IPO ratio between absorbital intensity - reflection The reflection-absorbance intensity of the PO (I OP) bond and the absorbance-reflection of the OH (IOH) bond of the infrared absorption spectra of the altered plastering surface. Chemical It is in the range of 0.18 to 0.30. 3. Methods for producing tinplate consisting of stages: After the plating layer has Tin is formed on at least one side of the sheet metal, dipping operations. Or electrolytic practice Cathode of ductile iron in a chemically altered solution Tin ions And ion phosphate, and then sintered to a temperature of 60 to 200 ํ C 4. Method for producing tinplate sheet according to the claim clause. 3. Where tin ions It is tin-tetra-valent ion.