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1. IN202117054761 - STEEL SHEET FOR HOT PRESSING AND MANUFACTURING METHOD THEREOF

Office
India
Application Number 202117054761
Application Date 26.11.2021
Publication Number 202117054761
Publication Date 27.05.2022
Publication Kind A
IPC
C23C
CCHEMISTRY; METALLURGY
23COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
CCOATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
C22C
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
CALLOYS
B32B
BPERFORMING OPERATIONS; TRANSPORTING
32LAYERED PRODUCTS
BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
Applicants HYUNDAI STEEL COMPANY
Inventors KIM, Sung Min
CHOI, Hye Rim
Title
(EN) STEEL SHEET FOR HOT PRESSING AND MANUFACTURING METHOD THEREOF
Abstract
(EN) An embodiment of the present invention is a steel sheet for hot pressing comprising: a base steel sheet; and a plating layer positioned on the base steel sheet and having a diffusion layer and a surface layer which are sequentially stacked, wherein the diffusion layer comprises an Fe-Al alloy layer and an Fe-Al intermetallic compound layer sequentially positioned on the base steel sheet and each comprising silicon, and the area fraction of the Fe-Al intermetallic compound layer relative to the diffusion layer is 84.5% to 98.0%.