27-01-2022 дата публикации
Номер: US20220025498A1
This aluminum-plated steel sheet has a steel sheet and a plating layer formed on a surface of the steel sheet, the plating layer contains one or more A group elements selected from a group consisting of Be, Mg, Ca, Sr, Ba, Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, and Zn, a remainder of Al, Fe, and impurities, a thickness t of the plating layer is 10 to 60 μm, and an average grain size is 2t/3 or less and 15 μm or less in a thickness range from an outermost surface of the plating layer to a ⅔ thickness t position. 17-. (canceled)8. An aluminum-plated steel sheet comprising:a steel sheet; anda plating layer formed on a surface of the steel sheet,wherein the plating layer contains one or more A group elements selected from Be, Mg, Ca, Sr, Ba, Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, and Zn, a remainder of Al, Fe, and an impurity,a thickness t of the plating layer is 10 to 60 μm, andan average grain size is 2t/3 or less and 15 μm or less in a thickness range from an outermost surface of the plating layer to a ⅔ thickness t position, wherein, in a case of measuring the A group elements in the plating layer in a thickness direction from the outermost surface of the plating layer using GDS,a maximum value of detection intensities of the A group elements in a range from the outermost surface of the plating layer to a ⅓ thickness t position is 2.0 times or more an average value of detection intensities of the A group elements in a range from the ⅔ thickness t position to a thickness t position.9. The aluminum-plated steel sheet according to claim 8 ,wherein a chemical composition of the plating layer is, by mass %,a total content of the A group elements: 0.001% to 30.00%,Si: 0% to 20.0%,Fe: 0% to 10.0%, anda remainder: Al and an impurity.10. The aluminum-plated steel sheet according to claim 8 ,wherein, in the chemical composition of the plating layer, by mass %,a total of a Sr content, a Mg content, and a Ca content is less than 0.001%, anda total content of the A group elements is 0. ...
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