公开(公告)号：KR1020100008721A

公开(公告)日：2010-01-26

申请号：KR1020080069327

申请日：2008-07-16

Applicant: 현대자동차주식회사

Inventor： 여인웅 ,  안승균 ,  양유창 ,  남영민 ,  김세훈 ,  진상문 ,  안정욱

IPC: H01M8/02 ,  H01M8/04

CPC classification number: H01M8/021 ,  C23C8/34 ,  C23C8/36 ,  C23C8/80 ,  H01M8/0215 ,  H01M8/0226 ,  H01M8/0228 ,  H01M2008/1095

Abstract: PURPOSE: A metal bipolar plate for a fuel cell is provided to improve corrosion resistance and to satisfy demand constant resistance of a bipolar plate by comprising highly accumulated nitrogen invasion layer with thickness of 200 nm or less without component change of a base material. CONSTITUTION: A metal bipolar plate for a fuel cell has a surface layer structure consisting of a nitrogen penetration layer formed on the surface of a stainless steel base material and a Fe3O4 surface oxidation layer formed on the surface of the nitrogen penetration layer. A method for forming the surface layer structure of a metal bipolar plate for a fuel cell comprises the steps of: plasma-nitriding a stainless steel base material to form a nitrogen penetration layer formed on the surface of a base material; and oxidizing and reducing the surface of the stainless steel base material formed with the nitrogen penetration layer to laminate an Fe3O4 surface oxidation layer on the surface of the nitrogen penetration layer.

Abstract translation: 目的：提供一种用于燃料电池的金属双极板，以通过包括厚度为200nm或更小的高度累积的氮侵入层而不会使基材变化，从而提高耐腐蚀性并满足双极板的需求恒定电阻。 构成：用于燃料电池的金属双极板具有由形成在不锈钢基材的表面上的氮渗透层和形成在氮渗透层的表面上的Fe 3 O 4表面氧化层组成的表面层结构。 用于形成燃料电池用金属双极板的表层结构的方法包括以下步骤：等离子体氮化不锈钢基材以形成在基材表面上形成的氮渗透层; 氧化还原由氮气渗透层形成的不锈钢基材的表面，以在氮渗透层的表面上层压Fe3O4表面氧化层。