Lg Electronics Inc.

Posco

Posco Co., Ltd

Bo Sung Seo

Jin Woong Kim

Jae Hyuk Jang

Dong Won Kim

Sung Hoon Kim

Jae Won Chang

Yong Kim

Hyun Seok Seo

Young Min Kim

Kwang Hyun Kim

Soo Young Oh

Chang Woo Son

Bon Kwon Koo

Myong Hun Im

Min Gyu Jo

Jong Hee Kim

Chang Oh Kim

Won Hyuk Jang

Sang Hee Yoo

Kwang Min Kim

Ki Hoon Jo

Keun Joo Kim

Yang Jin Chung

Jae Hwa Lee

Jin Woo Seo

Kwang-Min Kim

Myung Hun Im

Bong Gon Ryu

Sung Hoon Kiim

Stainless steel for a fuel cell separator plate and a manufacturing method therefor are disclosed. The stainless steel for a fuel cell separator plate, according to one embodiment of the present invention, comprises: a stainless base material; and a passive film formed on the stainless base material, wherein a Cr/Fe atomic weight ratio in a 1 nm or less thickness region of the stainless base material, which is adjacent to an interface between the stainless and the passive film, is 0.45 or more. Therefore, by modifying the surface of the stainless steel for a fuel cell separator plate, a low interface contact resistance and a good corrosion resistance can be obtained, and a separate additional process such as precious metal coating can be removed, such that manufacturing costs are reduced and productivity can be improved.

Stainless steel for fuel cell separator plate and manufacturing method therefor

Provided are stainless steel for a separator of a polymer electrolyte membrane fuel cell, which exhibits enhanced hydrophilicity and enhanced corrosion resistance, and a method of manufacturing the same. In the stainless steel for a separator of a polymer electrolyte membrane fuel cell, which exhibits enhanced hydrophilicity and enhanced corrosion resistance, according to an embodiment of the present invention, a ratio of Cr hydroxide/Cr oxide included in a passivation film of the stainless steel ranges from 0.5 to 1.7, and the passivation film has a contact angle (&#x3b8;) of 70&#xb0; or less. Thus, not only corrosion resistance may be enhanced by removing a non-conductive film formed on a surface of the stainless steel and forming a new conductive film thereon, but hydrophilicity may also be secured without additional surface treatment such as a separate coating or the like, and thus manufacturing costs may be reduced and productivity may be increased.

Stainless steel for separation plate of polymer electrolyte membrane fuel cell having improved hydrophilic property and corrosion resistance, and manufacturing method therefor

Stainless steel with improved hydrophilicity and contact resistance for a Polymer Electrolyte Membrane Fuel Cell (PEMFC) separator, and a method of manufacturing the stainless steel Stainless steel are disclosed. Stainless steel for a Polymer Electrolyte Membrane Fuel Cell (PEMFC) separator according to an embodiment of the present disclosure may include: by weight percent, 0 to 0.02% of C (excluding 0), 0 to 0.02% of N (excluding 0), 0 to 0.25% of Si (excluding 0), 0 to 0.2% of Mn (excluding 0), 0 to 0.04% of P (excluding 0), 0 to 0.02% of S (excluding 0), 20 to 34% of Cr, 0 to 0.6% of V (excluding 0), 0 to 0.5% of Ti (excluding 0), 0 to 0.5% of Nb (excluding 0), and the remainder comprising iron (Fe) and other unavoidable impurities, wherein a plurality of patterns may be formed on a surface of the stainless steel in a direction that is inclined with respect to a rolling direction, and the plurality of patterns are arranged repeatedly in the rolling direction.

Stainless steel for polymer fuel cell separation plate having improved hydrophilicity and contact resistance and method for manufacturing same

Provided is an austenitic stainless steel for a fuel cell including, in weight %, C: 0.05% to 0.09%, Si: 0.5% or less (0 excluded), Mn: 2.5% to 5.0%, Cr: 21% to 23%, Ni: 10% to 12%, Nb: 0.2% to 0.7%, N: 0.25% or less (0 excluded), Al: 0.2% or less (0 excluded), S: 0.003% or less (0 excluded), B: 0.01% or less (0 excluded), the remainder being Fe and unavoidable impurities.

Austenitic-based stainless steel for molten carbonate fuel cell

The present invention relates to a washing machine. A washing machine according to an embodiment of the present invention comprises: a casing for forming the exterior; a tub arranged inside the casing; a drum rotatably provided in the tub to contain laundry; and a water supply/distribution device arranged inside the casing, the water supply/distribution device having a temporary space, in which water flowing in from the outside gathers, a plurality of discharge ports for distributing the water in the temporary space towards a plurality of locations, and a pressure limiting unit for limiting the rise of water pressure in the temporary space.

Washing machine with water supply distributor

A drum type washing machine including a body having a front surface thereof with an entrance opening for entrance/exit of laundry, and a front door rotatably coupled at one end thereof to the front surface of the body and serving to open or close the entrance opening. The drum type washing machine further including a door elastic member providing the front door with an elastic force required to open the entrance opening when the entrance opening is closed by the front door. A supporting unit is installed to the front door and is adapted to come into contact with the body upon opening or closing of the entrance opening, thereby serving to keep the front door at a predetermined distance from the body.

Door assembly of a drum type washing machine

The laundry treating apparatus includes a cabinet forming an external appearance of the laundry treating apparatus, the cabinet having a laundry entrance opening for introducing laundry therethrough, a door rotatably coupled to the cabinet for opening and closing the laundry entrance opening, a hook provided at the door, and a door switch provided at the cabinet such that the hook can be latched to the door switch to prevent the door from being opened. The door switch separates the hook for opening the door.

Laundry treating apparatus

Growing community of inventors

Pohang-si, South Korea

Bo Sung Seo