Pohang, South Korea
Pohang, South Korea

POSCO is a multinational steel-making company headquartered in Pohang, South Korea. It had an output of 39.1 million tonnes of crude steel in 2011, making it the world's fourth-largest steelmaker by this measure. In 2010, it was the world's largest steel manufacturing company by market value. Also, in 2012, it was named as the 146th world's largest corporations by the Fortune global 500.POSCO currently operates two integrated steel mills in South Korea, in Pohang and Gwangyang. In addition, POSCO operates a joint venture with U.S. Steel, USS-POSCO, which is located in Pittsburg, California, United States. Wikipedia.


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The present invention relates to: a high-strength steel sheet used for construction materials and transportation means such as vehicles and trains and, more specifically, to a high-strength cold rolled steel sheet having excellent ductility, a hot-dip galvanized steel sheet, and a method for manufacturing the same.


The present invention relates to a solid oxide fuel cell which can improve the overall performance of the cell and obtain durability and reliability, and the invention provides a solid oxide fuel cell comprising a reaction preventing layer and a method for manufacturing the same, wherein an anode, an electrolyte, and a cathode are comprised, and a material which is formed between the electrolyte and the cathode comprises 35-90 mol % of gadolinia-doped ceria (GDC) and 10-65 mol % of metal oxide.


Patent
Posco and Postech Academy Industry Foundation | Date: 2017-02-22

The present invention relates to carbon nanotube fiber and a producing method thereof. The carbon nanotube fiber has a tensile strength which exceeds 5 GPa, and the producing method includes: producing a carbon nanotube fiber precursor consisting of carbon nanotubes; evenly dispersing a cross-linking agent on the carbon nanotube fiber precursor; and acquiring carbon nanotube fiber by thermally treating the carbon nanotube fiber precursor wherein the cross-linking agent is evenly dispersed, wherein the acquired carbon nanotube fiber has cross-linking between wall surfaces of the carbon nanotubes each other.


The present invention relates to: a high-strength steel sheet used for construction materials and transportation means such as vehicles and trains and, more specifically, to a high-strength cold rolled steel sheet having excellent ductility, a hot-dip galvanized steel sheet, and a method for manufacturing the same.


Patent
Posco, Korea Advanced Institute of Science and Technology | Date: 2016-11-09

A fluid storage tank according to an embodiment of the present invention comprises: a first outer wall section that forms a front face in the length direction, the width direction and the height direction so as to form a space portion in which a fluid is stored; a plurality of partition plates arranged along the length direction of the first outer wall portion to divide the space portion into the plurality of sub-space portions; and an end portion located between the outermost partition plate of the plurality of partition plates and the first outer wall portion, wherein each of the partition plates is formed with a fluid through hole comprising: a gas through hole located on the top of the partition plate; and a liquid through hole located on the bottom of the partition plate so that fluids between the sub-pace portions are in communication with each other.


An HPF molding member having a melted aluminum plating layer formed on the surface of a base steel sheet and excellent delamination resistance. The base steel sheet comprises: 0.18-0.25% by weight of C; 0.1-1.0% by weight of Si; 0.9-1.5% by weight of Mn; 0.03% by weight or less of P; 0.01% by weight or less of S; 0.01-0.05% by weight of Al; 0.05-0.5% by weight of Cr; 0.01-0.05% by weight of Ti; 0.001-0.005% by weight of B; 0.009% by weight or less of N; and the balance Fe and other impurities. The plating layer consists of a soft diffusion layer and a hard alloy layer, the hard alloy layer having a tau layer irregularly and non-continuously dispersed and distributed on the inside thereof at 10% or more of the entire area fraction. The difference in hardness between the alloy layer and the diffusion layer is 400 (Hv) or less.


The present invention relates to a ZnMg alloy-coated steel sheet with excellent blackening resistance and excellent coating adhesion and to a method for manufacturing same. Provided are a ZnMg alloy-coated steel sheet with excellent blackening resistance and excellent adhesion and a method for manufacturing same, the steel sheet comprising: a substrate steel sheet; a ZnFe intermetallic compound layer formed on the substrate steel sheet; a first ZnMg coating layer formed on the ZnFe intermetallic compound layer and comprising a ZnFe intermetallic compound in which the content of Zn is 95% by weight or higher; a second ZnMg coating layer formed on the first ZnMg coating layer and comprising a ZnMg intermetallic compound in which the content of Zn is 80 to 95% by weight; and an oxide film formed on the second. ZnMg coating layer and comprising a metallic oxide.


Patent
Posco | Date: 2016-09-07

Disclosed are a solid oxide fuel cell, a method of fabricating the same, and a tape casting apparatus for fabricating an anode. The method of fabricating the solid oxide fuel cell includes fabricating an electrolyte film sheet, a functional layer sheet, a support layer sheet, and a catalyst active layer sheet; forming a stack by sequentially stacking the electrolyte film sheet, the functional layer sheet, the support layer sheet, and the catalyst active layer sheet; fabricating an anode including the electrolyte film, the functional layer, the support layer, and the catalyst active layer by sintering the stack; and forming a cathode on the electrolyte film sheet. A catalyst content within the catalyst active layer sheet is gradually changed in a predetermined direction.


The objective of the present invention is to provide a molten zinc plated steel sheet with excellent crack resistance due to liquid metal bromide. One aspect of the present invention provides a molten zinc plated steel sheet with excellent crack resistance due to liquid metal bromide, the steel sheet comprising: a base steel sheet having a microstructure in which the fraction of austenite is greater than or equal to 90 area%; and a molten zinc plated layer formed on the base steel sheet, wherein the molten zinc plated layer comprises: a Fe-Zn alloy layer; and a Zn layer formed on the Fe-Zn alloy layer, and the Fe-Zn alloy layer provides a molten zinc plated steel sheet having a thickness of [(3.4t)/6] m or more with excellent crack resistance due to liquid metal bromide (where t is the thickness of the molten zinc plated steel sheet). The present invention can prevent a plated layer peeling phenomenon which easily occurs in common car welding and molding conditions, and can also provide a molten zinc plated steel sheet in which crack occurrence due to liquid metal bromide is suppressed.


The present invention relates to a color-treated base material and a base material color treatment method therefor. The base material is capable of improving the homogeneity and corrosion resistance of the surface of the base material and realizing a uniform color in a short period of time. Accordingly, the color-treated base material can be usefully used in the fields of building exterior materials, automobile interiors, and particularly electrical and electronic component materials, such as mobile phone case components, in which a magnesium material is used.

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