Hot-dip galvanized steel sheet having excellent adhesiveness at ultra-low temperatures
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United States of America Patent
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Feb 16, 2016
Grant Date -
Nov 27, 2014
app pub date -
Dec 20, 2012
filing date -
Dec 23, 2011
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Abstract
Provided is a hot-dip galvanized steel sheet having excellent adhesiveness at ultra-low temperatures as well as fine spangles, and a method of manufacturing the same. According to the present invention, a hot-dip galvanized steel sheet having excellent adhesiveness at ultra-low temperatures includes a base steel sheet, a composite layer formed on the base steel sheet and including transition metal, an inhibition layer formed on the composite layer and including a iron-aluminum (Fe—Al) based intermetallic compound, and a zinc (Zn)-plated layer formed on the inhibition layer, in which an average diameter of spangles in the zinc-plated layer is 150 μm or less, and a method of manufacturing the hot-dip galvanized steel sheet is provided.
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