SURFACE-TREATED STEEL PLATE, METAL CONTAINER, AND METHOD FOR PRODUCING SURFACE-TREATED STEEL PLATE

摘要

A surface-treated steel plate (1) is provided with: a tin-plated steel plate (10) obtained by plating a steel plate (11) with tin; a phosphate compound layer (20) that is formed on the tin-plated steel plate (10) and that comprises tin phosphate; and an aluminum-oxygen compound layer (30) that is formed on the phosphate compound layer (20) and that comprises an aluminum-oxygen compound as a main component. The ratio (tin oxide/tin phosphate) of the integral value of the profile derived from tin oxide to the integral value of the profile derived from the tin phosphate when the 3d5/2 spectrum of tin is measured in the aluminum-oxygen compound layer (30) using an X-ray photoelectron spectrometer is 6.9 or more.