公开(公告)号：US20190186040A1

公开(公告)日：2019-06-20

申请号：US16327552

申请日：2017-08-09

Applicant: POSCO

Inventor： Won-Cheol Chung ,  Jong-Hee Kim ,  Kwang-Min Kim ,  Bo-Sung Seo

IPC: C25F7/00 ,  C25F1/06

CPC classification number: C25F7/00 ,  C25F1/04 ,  C25F1/06 ,  H01M8/0202 ,  H01M8/021

Abstract: An embodiment of the present invention relates to a vertical electrolytic device having an improved structure to easily discharge bubbles generated during an electrolysis process that is used for surface modification of a separator of a fuel cell or the like. The vertical electrolytic device according to an aspect of the present invention includes an electrolytic bath in which an electrolyte is stored and an opening is formed in top and bottom portions thereof to allow vertical movement of a strip, wherein the bottom opening is formed to correspond with the strip to prevent discharge of the electrolyte stored in the electrolytic bath; and at least one pair of electrode parts disposed in the electrolytic bath so as to be facing each other on each side of the strip.

公开(公告)号：US20200370154A1

公开(公告)日：2020-11-26

申请号：US16770244

申请日：2018-10-05

Applicant: POSCO

Inventor： Jong-Hee Kim ,  Kwang Min Kim ,  Bo-Sung Seo ,  Hak Kim

IPC: C22C38/04 ,  C22C38/00 ,  C22C38/02 ,  C22C38/20 ,  C21D8/02 ,  C21D7/02

Abstract: Disclosed is a non-magnetic austenitic stainless steel with improved strength and surface conductivity. An austenitic stainless steel according to an embodiment of the present disclosure includes, in percent (%) by weight of the entire composition, C: 0.07 to 0.2%, N: 0.15 to 0.4%, Si: 0.8 to 2%, Mn: 16 to 22%, S: 0.01% or less (excluding 0), Cr: 12.5 to 20%, Cu: 1 to 3%, the remainder of iron (Fe) and other inevitable impurities, and satisfies the following equation (1). Ni+0.65Cr+1.05Mn+0.35Si+12.6C+33.6N≥40  (1) Ni, Cr, Mn, Si, C, N are % by weight of each element.