WO2010077065A3 - 고분자 연료전지 분리판용 스테인리스강 및 그 제조방법 - Google Patents

고분자 연료전지 분리판용 스테인리스강 및 그 제조방법 Download PDF

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WO2010077065A3
WO2010077065A3 PCT/KR2009/007891 KR2009007891W WO2010077065A3 WO 2010077065 A3 WO2010077065 A3 WO 2010077065A3 KR 2009007891 W KR2009007891 W KR 2009007891W WO 2010077065 A3 WO2010077065 A3 WO 2010077065A3
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stainless steel
less
fuel cell
polymer fuel
acid
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PCT/KR2009/007891
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French (fr)
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WO2010077065A2 (ko
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김종희
조기훈
김영환
이정희
이윤용
김진석
석종헌
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주식회사 포스코
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Priority to CA2748568A priority Critical patent/CA2748568C/en
Priority to US13/142,495 priority patent/US9290845B2/en
Priority to CN200980153305.3A priority patent/CN102272343B/zh
Priority to DE112009004330T priority patent/DE112009004330T5/de
Priority to JP2011543441A priority patent/JP5396487B2/ja
Publication of WO2010077065A2 publication Critical patent/WO2010077065A2/ko
Publication of WO2010077065A3 publication Critical patent/WO2010077065A3/ko
Priority to US15/017,902 priority patent/US11047029B2/en

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Abstract

본 발명은 고분자 연료전지 작동환경에서 우수한 내식성과 계면접촉저항을 갖는 고분자 연료전지 분리판용 페라이트계 스테인리스강 및 그의 제조방법에 관한 것이다. 본 발명에 따른 스테인리스강은 중량%로, C:0.02% 이하, N:0.02% 이하, Si:0.4% 이하, Mn:0.2 %이하, P:0.04% 이하, S:0.02% 이하, Cr:25.0~32.0%, Cu:0~2.0%, Ni:0.8% 이하, Ti:0.01~0.5% 이하, Nb:0.01~0.5% 이하, 잔부 Fe 및 불가피하게 함유되는 원소로 이루어진 스테인리스 강으로, 표면에 제2 부동태 피막이 형성된 스테인리스강의 제조방법에 있어서, 상기 스테인리스강을 광휘소둔 혹은 소둔·산세하여 표면에 제1 부동태 피막을 형성하는 단계; 상기 스테인리스강을 10~20중량% 황산수용액에서 50~75℃의 온도로 일정 시간 동안 산세정하여 제1 부동태 피막을 제거하는 단계; 상기 스테인리스강을 수세하는 단계; 및 상기 스테인리스강을 10~20중량% 질산과 1~10중량% 불산의 혼산에서 40~60℃의 온도로 일정 시간 동안 부동태화 처리하여 상기 제2 부동태 피막을 형성한다. 이러한 구성에 의하여, 내용출성이 저감된 우수한 내식성을 갖는 스테인리스강을 제조할 수 있을뿐 아니라 60~150℃의 연료전지 작동조건 및 다양한 표면조도 조건에서도 낮은 계면 접촉저항을 갖는 장기적인 성능이 우수한 고분자 연료전지 분리판용 스테인리스강을 생산할 수 있다.
PCT/KR2009/007891 2008-12-29 2009-12-29 고분자 연료전지 분리판용 스테인리스강 및 그 제조방법 WO2010077065A2 (ko)

Priority Applications (6)

Application Number Priority Date Filing Date Title
CA2748568A CA2748568C (en) 2008-12-29 2009-12-29 Stainless steel for polymer electrolyte membrane fuel cell separator and method of manufacturing the same
US13/142,495 US9290845B2 (en) 2008-12-29 2009-12-29 Stainless steel for polymer fuel cell separator and method for preparing same
CN200980153305.3A CN102272343B (zh) 2008-12-29 2009-12-29 用于聚合物燃料电池隔板的不锈钢及其制造方法
DE112009004330T DE112009004330T5 (de) 2008-12-29 2009-12-29 Edelstahl für einen Separator einer Polymer-Elektrolyt-Membran-Brennstoffzelle und Verfahren zur Herstellung desselben
JP2011543441A JP5396487B2 (ja) 2008-12-29 2009-12-29 高分子燃料電池分離板用ステンレス鋼およびその製造方法
US15/017,902 US11047029B2 (en) 2008-12-29 2016-02-08 Stainless steel for polymer fuel cell separator and method for preparing same

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
KR10-2008-0135141 2008-12-29
KR20080135141 2008-12-29
KR10-2009-0127397 2009-12-18
KR1020090127397A KR100993412B1 (ko) 2008-12-29 2009-12-18 고분자 연료전지 분리판용 스테인리스강 및 그 제조방법

Related Child Applications (2)

Application Number Title Priority Date Filing Date
US13/142,495 A-371-Of-International US9290845B2 (en) 2008-12-29 2009-12-29 Stainless steel for polymer fuel cell separator and method for preparing same
US15/017,902 Division US11047029B2 (en) 2008-12-29 2016-02-08 Stainless steel for polymer fuel cell separator and method for preparing same

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CN102272343A (zh) 2011-12-07
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US9290845B2 (en) 2016-03-22
US20160160329A1 (en) 2016-06-09
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