POSCO. has been granted a patent for a plated steel sheet featuring a base steel sheet, a Zn—Mg—Al plating layer, and an Fe—Al inhibition layer. The plating layer contains 4-10% Mg, 5.1-25% Al, and a MgZn2 phase comprising 24-50% of its structure. GlobalData’s report on POSCO gives a 360-degree view of the company including its patenting strategy. Buy the report here.
Smarter leaders trust GlobalData
According to GlobalData’s company profile on POSCO, Battery management systems was a key innovation area identified from patents. POSCO's grant share as of June 2024 was 51%. Grant share is based on the ratio of number of grants to total number of patents.
Plated steel sheet with zn—mg—al and fe—al layers
The granted patent US12006576B2 describes a novel plated steel sheet designed to enhance corrosion resistance and durability. The structure comprises a base steel sheet, a Zn—Mg—Al-based plating layer on at least one surface, and an Fe—Al-based inhibition layer situated between the base steel sheet and the plating layer. The plating layer is formulated with 4 to 10% magnesium (Mg) and 5.1 to 25% aluminum (Al), with the remainder being zinc (Zn) and unavoidable impurities. Notably, the plating layer contains a MgZn2 phase, which constitutes 24 to 50 weight percent of the layer, and an aluminum single phase that occupies 1 to 30% of the total cross-sectional area of the MgZn2 phase.
Further specifications include the exposure of the MgZn2 phase on the surface of the plating layer, with an average circle-equivalent diameter ranging from 5 to 50 micrometers. The aluminum single phase is also limited to 1 to 15% of the total area of the plating layer. The surface roughness of the plating layer is maintained between 0.5 to 2.0 micrometers. The inhibition layer is characterized as a Fe—Al-based intermetallic compound, containing less than 10 weight percent of zinc, with specific compounds such as Fe2Al5, FeAl3, and FeAl5 being identified. Additionally, the thickness of the inhibition layer is specified to be between 0.02 to 2 micrometers, contributing to the overall performance of the plated steel sheet.
To know more about GlobalData’s detailed insights on POSCO, buy the report here.
Data Insights
From
The gold standard of business intelligence.
Blending expert knowledge with cutting-edge technology, GlobalData’s unrivalled proprietary data will enable you to decode what’s happening in your market. You can make better informed decisions and gain a future-proof advantage over your competitors.
GlobalData, the leading provider of industry intelligence, provided the underlying data, research, and analysis used to produce this article.
GlobalData Patent Analytics tracks bibliographic data, legal events data, point in time patent ownerships, and backward and forward citations from global patenting offices. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies across the world’s largest industries.
