KR100993412B1 - 고분자 연료전지 분리판용 스테인리스강 및 그 제조방법 - Google Patents
고분자 연료전지 분리판용 스테인리스강 및 그 제조방법 Download PDFInfo
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Abstract
Description
강종 | C | Si | Mn | P | S | Al | Cr | Ni | Cu | Ti | Nb | Mo | 기타 | N |
발명강1 | 0.009 | 0.29 | 0.142 | <0.003 | <0.002 | 0.048 | 26.26 | 0.173 | 0.437 | 0.058 | 0.241 | 2.03 | - | 0.009 |
발명강2 | 0.007 | 0.273 | 0.146 | <0.003 | <0.002 | 0.058 | 26.33 | 0.167 | 0.436 | 0.059 | 0.25 | 4.04 | - | 0.009 |
발명강3 | 0.008 | 0.269 | 0.145 | <0.003 | <0.002 | 0.055 | 30.01 | 0.169 | 0.43 | 0.06 | 0.245 | 2.13 | - | 0.009 |
발명강4 | 0.006 | 0.293 | 0.143 | <0.003 | <0.002 | 0.041 | 30.29 | 0.168 | 0.4 | 0.046 | 0.242 | 4.03 | - | 0.008 |
발명강5 | 0.006 | 0.303 | 0.14 | <0.003 | <0.002 | 0.027 | 28.55 | 0.181 | 0.412 | 0.041 | 0.241 | 3.19 | - | 0.009 |
발명강6 | 0.008 | 0.341 | 0.146 | <0.003 | <0.002 | 0.039 | 30.66 | 0.181 | 0.442 | 0.041 | 0.245 | 2.03 | 0.0013La | 0.012 |
발명강7 | 0.008 | 0.307 | 0.14 | <0.003 | <0.002 | 0.03 | 29.68 | 0.19 | 0.421 | 0.039 | 0.24 | 2.12 | 0.420W | 0.008 |
발명강8 | 0.008 | 0.263 | 0.145 | <0.003 | <0.002 | 0.055 | 29.68 | 0.184 | 0.429 | 0.051 | 0.243 | 2 | 0.002Zr | 0.008 |
발명강9 | 0.007 | 0.24 | 0.151 | <0.003 | <0.002 | 0.041 | 30.42 | 0.185 | 0.964 | 0.05 | 0.247 | 2.03 | - | 0.009 |
발명강10 | 0.009 | 0.267 | 0.148 | <0.003 | <0.002 | 0.04 | 30.75 | 0.183 | 0.455 | 0.049 | 0.243 | 2.03 | 0.363V | 0.009 |
발명강11 | 0.007 | 0.308 | 0.15 | <0.003 | <0.002 | 0.021 | 30.42 | 0.183 | 0.442 | 0.036 | 0.24 | 2.01 | 0.001B | 0.008 |
발명강12 | 0.003 | 0.107 | 0.146 | 0.003 | <0.003 | 0.057 | 30.05 | 0.192 | 0.977 | 0.05 | 0.25 | 2 | 0.4W | 0.006 |
발명강13 | 0.004 | 0.199 | 0.153 | 0.003 | <0.003 | 0.043 | 30.1 | 0.193 | 1.01 | 0.045 | 0.25 | 1.98 | 0.41W | 0.007 |
발명강14 | 0.005 | 0.222 | 0.148 | 0.003 | <0.003 | 0.056 | 30.26 | 0.207 | 0.97 | 0.048 | 0.26 | 2.03 | 0.4V | 0.009 |
발명강15 | 0.005 | 0.162 | 0.152 | 0.003 | <0.003 | 0.046 | 29.96 | 0.747 | 0.975 | 0.052 | 0.26 | 2 | 0 | 0.005 |
발명강16 | 0.006 | 0.208 | 0.138 | 0.004 | <0.003 | 0.03 | 30.07 | 0.204 | 0.973 | 0.041 | 0.25 | 1.47 | 0.41W | 0.007 |
발명강17 | 0.004 | 0.2 | 0.145 | 0.003 | <0.003 | 0.047 | 28.01 | 0.199 | 0.993 | 0.044 | 0.25 | 2.01 | 0.41W | 0.008 |
발명강18 | 0.006 | 0.141 | 0.152 | <0.003 | <0.003 | 0.051 | 30.25 | 0.11 | 1.00 | 0.049 | 0.26 | - | 0.39V | 0.011 |
발명 19 | 0.011 | 0.138 | 0.167 | <0.003 | <0.003 | 0.071 | 30.58 | 0.11 | 0.96 | 0.056 | 0.27 | - | 0.40V | 0.012 |
발명강20 | 0.006 | 0.118 | 0.151 | <0.003 | <0.003 | 0.049 | 30.20 | 0.11 | 0.97 | 0.051 | 0.26 | - | - | 0.008 |
발명강21 | 0.005 | 0.136 | 0.150 | <0.003 | <0.003 | 0.034 | 30.16 | 0.12 | 0.96 | 0.051 | 0.25 | 0.98 | 0.40W | 0.009 |
발명강22 | 0.006 | 0.126 | 0.150 | <0.003 | <0.003 | 0.043 | 30.16 | 0.10 | 0.97 | 0.050 | 0.25 | - | - | 0.009 |
발명강23 | 0.008 | 0.110 | 0.151 | <0.003 | <0.003 | 0.083 | 30.19 | 0.11 | 0.98 | 0.056 | 0.26 | - | 0.37W | 0.009 |
발명강24 | 0.004 | 0.124 | 0.121 | <0.003 | <0.003 | 0.037 | 30.10 | 0.12 | - | 0.051 | 0.24 | - | 0.4V | 0.008 |
발명강25 | 0.005 | 0.113 | 0.143 | <0.003 | <0.003 | 0.035 | 30.11 | 0.11 | - | 0.050 | 0.25 | - | - | 0.009 |
발명강26 | 0.007 | 0.128 | 0.128 | <0.003 | <0.003 | 0.041 | 30.01 | - | 0.97 | 0.050 | 0.25 | - | 0.4V | 0.009 |
발명강27 | 0.006 | 0.111 | 0.137 | <0.003 | <0.003 | 0.025 | 30.00 | - | 0.98 | 0.056 | 0.26 | - | - | 0.009 |
비교강 | 0.008 | 0.4 | 0.34 | 0.003< | <0.002 | 0.003 | 19.33 | 0.14 | 0.45 | - | 0.43 | 0.01 | 0.98V | 0.008 |
Ra(㎛) | 15중량% 황산 처리시간 (초) |
15중량%질산+5중량%불산 처리시간 (초) |
140N/cm2의 압력에서의 접촉저항 (mΩcm2) |
비고 |
0.350 | 0 | 0 | 28.26 | 비교예 |
100 | 150 | 3.89 | 발명예 | |
0.055 | 0 | 0 | 75.37 | 비교예 |
0 | 250 | 22.51 | 비교예 | |
30 | 250 | 15.01 | 비교예 | |
60 | 250 | 3.94 | 발명예 | |
90 | 250 | 8.72 | 발명예 | |
0.040 | 0 | 0 | 102.44 | 비교예 |
30 | 300 | 3.89 | 발명예 |
강종 | 화학적 표면 개질후 접촉저항 (mΩ㎠ at 140N/㎠ |
200도 대기 분위기 20분 열처리후 접촉저항 (mΩ㎠) at 140N/㎠ |
분극실험 후 부식전류밀도(㎂/㎠) | 분극실험 후 계면접촉저항 (mΩ㎠) at 140N/㎠ |
분극실험 후 용출이온 농도(mg/L) | ||
Fe | Cr | Ni | |||||
발명강1 | 5.17 | 5.40 | 0.08 | 5.84 | 0.023 | 없음 | 없음 |
발명강2 | 4.32 | 5.1 | 0.02 | 4.92 | 0.033 | 없음 | 없음 |
발명강3 | 4.09 | 4.30 | 0.07 | 4.71 | 0.024 | 없음 | 없음 |
발명강4 | 4.35 | 4.55 | 0.03 | 4.52 | 0.017 | 없음 | 없음 |
발명강5 | 4.16 | 4.20 | 0.02 | 4.10 | 0.021 | 없음 | 없음 |
발명강6 | 4.16 | 4.30 | 0.02 | 5.66 | 0.025 | 없음 | 없음 |
발명강7 | 3.70 | 4.55 | 0.04 | 4.99 | 0.018 | 없음 | 없음 |
발명강8 | 3.77 | 4.54 | 0.09 | 4.78 | 0.017 | 없음 | 없음 |
발명강9 | 3.89 | 4.12 | 0.08 | 4.28 | 0.016 | 없음 | 없음 |
발명강10 | 3.74 | 4.31 | 0.03 | 4.23 | 0.019 | 없음 | 없음 |
발명강11 | 3.87 | 4.55 | 0.03 | 4.38 | 0.027 | 없음 | 없음 |
발명강12 | 5.84 | 5.90 | 0.10 | 5.56 | 0.021 | 없음 | 없음 |
발명강13 | 4.06 | 5.10 | 0.12 | 8.52 | 0.024 | 없음 | 없음 |
발명강14 | 4.25 | 4.95 | 0.09 | 5.68 | 0.040 | 없음 | 없음 |
발명강15 | 4.45 | 5.12 | 0.12 | 5.58 | 0.045 | 없음 | 없음 |
발명강16 | 5.33 | 5.78 | 0.12 | 6.07 | 0.049 | 없음 | 없음 |
발명강17 | 5.64 | 5.99 | 0.12 | 6.87 | 0.031 | 없음 | 없음 |
발명강18 | 4.67 | 4.78 | 0.04 | 5.56 | 0.021 | 없음 | 없음 |
발명강19 | 5.82 | 5.97 | 0.08 | 6.52 | 0.022 | 없음 | 없음 |
발명강20 | 4.25 | 4.32 | 0.09 | 6.05 | 0.020 | 없음 | 없음 |
발명강21 | 4.50 | 5.12 | 0.03 | 7.10 | 0.017 | 없음 | 없음 |
발명강22 | 5.12 | 5.78 | 0.06 | 5.45 | 0.023 | 없음 | 없음 |
발명강23 | 5.75 | 5.90 | 0.04 | 6.10 | 0.027 | 없음 | 없음 |
발명강24 | 4.35 | 4.44 | 0.03 | 5.78 | 0.017 | 없음 | 없음 |
발명강25 | 4.67 | 4.78 | 0.02 | 5.99 | 0.020 | 없음 | 없음 |
발명강26 | 4.89 | 5.12 | 0.05 | 6.00 | 0.019 | 없음 | 없음 |
발명강27 | 5.01 | 5.09 | 0.03 | 5.79 | 0.021 | 없음 | 없음 |
비교강 | 8.5 | 25.78 | 0.16 | 5 | 2.135 | 0.505 | 0.005 |
Claims (17)
- 중량%로, C:0초과~0.02 이하, N:0초과~0.02 이하, Si:0초과~0.4 이하, Mn:0초과~0.2 이하, P:0초과~0.04 이하, S:0초과~0.02 이하, Cr:25.0~32.0, Cu:0~2.0 ,Ni:0초과~0.8이하, Ti:0초과~0.5 이하, Nb:0초과~0.5 이하, 잔부 Fe 및 불가피하게 함유되는 원소로 이루어지고 Mo를 미첨가한 스테인리스 강 표면에 제2 부동태 피막이 형성된 스테인리스강의 제조방법에 있어서,상기 스테인리스강을 광휘 소둔 혹은 소둔·산세하여 표면에 제1 부동태 피막을 형성하는 단계;상기 스테인리스강을 10~20중량% 황산수용액에서 50~75℃의 온도로 표면 조도(Ra)에 따라 조절되는 시간 동안 산세정하여 제1 부동태 피막을 제거하는 단계;상기 스테인리스강을 수세하는 단계; 및상기 스테인리스강을 10~20중량% 질산과 1~10중량% 불산의 혼산에서 40~60℃의 온도로 표면 조도(Ra)에 따라 조절되는 시간 동안 부동태화 처리하여 상기 제2 부동태 피막을 형성하는 단계;를 포함하는 것을 특징으로 하는 고분자 연료전지 분리판용 스테인리스강의 제조방법.
- 제1항에 있어서,상기 스테인리스강은 중량%로, Mo : 0초과~5.0%이하를 더 포함하는 페라이트계 스테인리스강인 것을 특징으로 하는 고분자 연료전지 분리판용 스테인리스강의 제조방법.
- 제1항 또는 제2항에 있어서,상기 스테인리스강은 중량%로, V:0.1~1.5, W:0.1~2.0, La:0.0005~1.0, Zr:0.0005~1.0, B:0.0005~0.1로 이루어지는 군에서 선택되는 1종 또는 2종 이상의 원소가 더 포함되는 것을 특징으로 하는 고분자 연료전지 분리판용 스테인리스강의 제조방법
- 제1항에 있어서,상기 제1 부동태 피막을 제거하는 단계에서 하기 식에 따른 처리시간 동안 산세정하는 것을 특징으로 하는 고분자 연료전지 분리판용 스테인리스강의 제조방법.99 - 3.18(1/Ra(㎛)) ≤ 처리시간(t, 초) ≤ 153 - 3.18(1/Ra(㎛))
- 제1항에 있어서,상기 제2 부동태 피막을 형성하는 단계에서 하기 식에 따른 처리시간 동안 부동태화 처리하는 것을 특징으로 하는 고분자 연료전지 분리판용 스테인리스강의 제조방법.120 + 6.73(1/Ra(㎛)) ≤ 처리시간(t, 초) ≤ 140 + 6.73(1/Ra(㎛))
- 제1항에 있어서,상기 제2 부동태 피막을 형성하는 단계에서 상기 제2 부동태 피막의 두께를 2~4.5㎚로 형성하는 것을 특징으로 하는 고분자 연료전지 분리판용 스테인리스강의 제조방법.
- 제1항에 있어서,상기 제2 부동태 피막을 형성하는 단계에서 상기 제2 부동태 피막의 1.5㎚ 이내의 영역에서 Cr/Fe 산화물비가 1.5 이상이 되도록 하는 것을 특징으로 하는 고분자 연료전지 분리판용 스테인리스강의 제조방법.
- 제1항에 있어서,상기 제2 부동태 피막을 형성하는 단계에서 상기 제2 부동태 피막의 1㎚ 이내의 영역에서 Cr(OH)3/Cr 산화물 분포도가 0-0.7의 비가 확보되도록 하는 것을 특징으로 하는 고분자 연료전지 분리판용 스테인리스강의 제조방법.
- 제1항에 있어서,상기 제1 부동태 피막 제거단계, 수세단계 및 제 2부동태 피막 형성단계는 스테인리스강의 광휘소둔 혹은 소둔·산세후 강판에 실시하는 것을 특징으로 하는 고분자 연료전지 분리판용 스테인리스강의 제조방법.
- 제1항에 있어서,상기 제1 부동태 피막 제거단계, 수세단계 및 제 2부동태 피막 형성단계는 스테인리스강 광휘소둔 혹은 소둔·산세후 분리판 유로 성형 직전에 실시하는 것을 특징으로 하는 고분자 연료전지 분리판용 스테인리스강의 제조방법
- 제1항에 있어서,상기 제1 부동태 피막 제거단계, 수세단계 및 제 2부동태 피막 형성단계는 스테인리스강 광휘소둔 혹은 소둔·산세후 분리판 유로 성형 직후에 실시하는 것을 특징으로 하는 고분자 연료전지 분리판용 스테인리스강의 제조방법
- 제1항 또는 제2항에 있어서,상기 스테인리스강의 접촉저항이 60~150℃의 작동환경하에서 10mΩ㎠ 이하인 것을 특징으로 하는 고분자 연료전지 분리판용 스테인리스강의 제조방법.
- 중량%로, C:0초과~0.02 이하, N:0초과~0.02 이하, Si:0초과~0.4 이하, Mn:0초과~0.2 이하, P:0초과~0.04 이하, S:0초과~0.02 이하, Cr:25.0~32.0, Cu:0~2.0, Ni:0초과~0.8 이하, Ti:0초과~0.5 이하, Nb:0초과~0.5 이하, 잔부 Fe 및 불가피하게 함유되는 원소로 이루어지고, Mo를 미첨가하되, 60~150℃의 작동환경하에서 접촉저항이 10mΩ㎠ 이하인 것을 특징으로 하는 고분자 연료전지 분리판용 스테인리스강.
- 제13항에 있어서,상기 스테인리스강은 중량%로, Mo:0초과~5.0 이하를 더 포함하는 페라이트계 스테인리스강이고, 상기 스테인리스강 표면 부동태 피막의 두께가 2~4.5㎚로 형성되고, 부동태 피막의 1.5㎚ 이내의 영역에서 Cr/Fe 산화물비가 1.5 이상이며, 부동태 피막의 1㎚ 이내의 영역에서 Cr(OH)3/Cr 산화물 분포도가 0-0.7가 확보되며, 접촉저항이 60~150℃의 작동환경하에서 10mΩ㎠ 이하인 것을 특징으로 하는 고분자 연료전지 분리판용 스테인리스강.
- 제 13항에 있어서,상기 스테인리스강 표면 부동태 피막의 두께가 2~4.5㎚로 형성되고, 부동태 피막의 1.5㎚ 이내의 영역에서 Cr/Fe 산화물비가 1.5 이상이며, 부동태 피막의 1㎚ 이내의 영역에서 Cr(OH)3/Cr 산화물 분포도가 0-0.7가 확보되는 것을 특징으로 하는 고분자 연료전지 분리판용 스테인리스강.
- 제13항 내지 제15항 중 어느 하나의 항에 있어서,상기 스테인리스강은 중량%로, V:0.1~1.5, W:0.1~2.0, La:0.0005~1.0, Zr:0.0005~1.0, B:0.0005~0.1로 이루어지는 군에서 선택되는 1종 또는 2종 이상의 원소가 더 포함되는 것을 특징으로 하는 고분자 연료전지 분리판용 스테인리스강.
- 삭제
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US20160160329A1 (en) | 2016-06-09 |
CA2748568C (en) | 2017-11-28 |
US11047029B2 (en) | 2021-06-29 |
WO2010077065A3 (ko) | 2010-10-07 |
US20110294042A1 (en) | 2011-12-01 |
DE112009004330T5 (de) | 2012-07-05 |
KR20100080379A (ko) | 2010-07-08 |
CA2748568A1 (en) | 2010-07-08 |
WO2010077065A2 (ko) | 2010-07-08 |
JP2012514297A (ja) | 2012-06-21 |
US9290845B2 (en) | 2016-03-22 |
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