Effect of Passivation Treatments on the Corrosion Resistance of PIM 316L Stainless Steel in a PEM Fuel Cell Simulated Environment

被引：0
作者：
Sayeg, Isaac Jamil [1 ]
Antunes, Renato Altobelli [2 ]
Lopes de Oliveira, Mara Cristina [3 ]
机构：
[1] Univ Sao Paulo, Inst Geociencias, Rua Lago 562, BR-05508080 Sao Paulo, Brazil
[2] Univ Fed ABC, CECS, BR-09210170 Santo Andre, SP, Brazil
[3] Electrocell Ind Com Equip Eletricos LTDA, BR-05508000 Sao Paulo, SP, Brazil
来源：
ADVANCED POWDER TECHNOLOGY VIII, PTS 1 AND 2 | 2012年 / 727-728卷
关键词：
316L PIM; passivation; corrosion; PEM fuel cell; bipolar plate; BIPOLAR PLATE; CONDUCTIVITY; FILM; EIS;
D O I：
10.4028/www.scientific.net/MSF.727-728.96
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
In this work, the corrosion resistance of passivated PIM 316L stainless steel specimens was evaluated in 1M H2SO4 + 2 ppm HF solution at room temperature during 28 days of immersion. Passivation was carried out in HNO3 and H2SO4 solutions. The electrochemical behavior of the passivated specimens was assessed through electrochemical impedance spectroscopy and anodic polarization curves. Scanning electron microscopy (SEM) was employed to observe the surface of the specimens before and after the passivation treatments. The results pointed to a strong influence of the passivation conditions on the corrosion resistance of the specimens.
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页码：96 / +
页数：2
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