SOLUTION COMPOSITION FOR SURFACE TREATMENT OF STEEL SHEET AND SURFACE-TREATED STEEL SHEET USING SAME
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United States of America Patent
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Issued Date -
Aug 15, 2024
app pub date -
Mar 22, 2024
filing date -
Sep 28, 2016
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Abstract
Provided is a surface-treated steel sheet including: a steel sheet; and a corrosion-resistant film layer formed on at least one surface of the steel sheet. The corrosion-resistant film layer includes a product formed by a hydrolysis reaction of silica and an alkoxy silane and an acrylate-based polymer, comprises 25 to 65 wt % of carbon (C), 20 to 70 wt % of silicon (Si), and 1 to 40 wt % of oxygen (O), and in the corrosion-resistant film layer, a ratio of silicon (Si) to oxygen (O) (Si—O bonding) and silicon (Si) to carbon (C) (Si—C bonding) is 80 to 95 wt %:5 to 20 wt %.
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