Toyo Kohan Co., Ltd.

Toyo Seikan Co., Ltd.

Marie Sasaki

Kunihiro Yoshimura

Munemitsu Hirotsu

Masanobu Matsubara

Kenji Yanada

Akihiro Yoshida

Keisuke Yoshida

Masahiko Matsukawa

Wataru Kurokawa

Mitsuhide Aihara

There is provided a surface-treated steel sheet () comprising: a tin-plated steel sheet () obtained by tin-plating a steel sheet (); a phosphate compound layer () containing tin phosphate formed on the tin-plated steel sheet (); and an aluminum-oxygen compound layer () on the phosphate compound layer (), a main constituent of the aluminum-oxygen compound layer () being an aluminum-oxygen compound; wherein, when the 3dspectrum of tin in the aluminum-oxygen compound layer () is determined using an X-ray photoelectron spectroscopy, the ratio of the integration value of the profile derived from tin oxide to the integration value of the profile derived from tin phosphate (tin oxide/tin phosphate) is 6.9 or more.

Surface-treated steel sheet, metal container, and method for producing surface-treated steel sheet

There is provided a surface-treated steel sheet () comprising: a tin-plated steel sheet () obtained by tin-plating a steel sheet (); a phosphate compound layer () containing tin phosphate formed on the tin-plated steel sheet (); and an aluminum-oxygen compound layer () formed on the phosphate compound layer (), a main constituent of the aluminum-oxygen compound layer being an aluminum-oxygen compound.

Provided is a method for producing a surface-treated steel sheet including the step of forming a layer mainly composed of an oxygen compound containing Al onto a tin-plated steel sheet by conducting cathode electrolytic treatment to the tin-plated steel sheet using an electrolytic treatment solution containing Al ions and nitrate ions. For the electrolytic treatment solution, an electrolytic treatment solution not containing F ions and where the amount of nitrate ions contained is 11,500 to 25,000 ppm by weight is used.

Method for producing surface-treated steel sheet, surface-treated steel sheet, and organic resin coated metal container

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Yamaguchi, Japan

Marie Sasaki