Effects of thermal oxi-nitridation on the corrosion resistance and electrical conductivity of 446M stainless steel for PEMFC bipolar plates

Lee, Ki-Hyoung; Lee, Seok-Hyun; Kim, Jong-Hee; Lee, Yun-Yong; Kim, Young‐Hwan; Kim, Min‐Chul; Wee, Dang-Moon

doi:10.1016/j.ijhydene.2008.11.063

Cited by 34 publications

(3 citation statements)

References 17 publications

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“…Other investigated SSs include austenite 310 SS [27,32,33,40,45,47,60], 317/317L SS [27,38,47], 321 SS [33,47], 347 SS [33,69], 904/904L [32, 33, 43-45, 47, 69, 70], ferrite 400 series SSs [27,53,[71][72][73] and duplex SSs [54,69]. W-and Ta-modified 316 SS were studied [74].…”

Section: Bare Metallic Bipolar Platesmentioning

confidence: 99%

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Reviewing Metallic PEMFC Bipolar Plates

2010

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A bipolar plate is one of the most important components in a polymer exchange membrane fuel cell (PEMFC) stack and has multiple functions. Metallic bipolar plate candidates have advantages over composite rivals in excellent electrical and thermal conductivity, good mechanical strength, high chemical stability, very wide alloy choices, low cost and, most importantly, existing pathways for high‐volume, high‐speed mass production. The challenges with metallic bipolar plates are the higher contact resistance and possible corrosion products, which may contaminate the membrane electrode assembly. This review evaluates the candidate metallic and coating materials for bipolar plates and gives the perspective of the research trends.

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Section: Bare Metallic Bipolar Platesmentioning

confidence: 99%

“…Instead of forming a continuous nitride layer on model Ni-50Cr alloy, the surface chemistry of nitrided 446 SS consisted of nitrogen-modified oxides [115]. A short pre-oxidation step has greatly modified the process and the performance of thermally nitrided alloys [73,[121][122][123][124].…”

Section: Tinmentioning

confidence: 99%

Reviewing Metallic PEMFC Bipolar Plates

2010

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“…The major concerns for stainless steel bipolar plate have been corrosion and interfacial contact resistance (ICR) of the bipolar material [1]. Particularly, most of the recent research on stainless steels is related to decreasing the ICR by way of coatings [4e6], and nitridation [7,8] because the ICR of bare stainless steels is too high to apply for the bipolar plate material. However, it has been shown that such additional coatings are not beneficial for long-term operation of PEMFC [1,9].…”

Section: Introductionmentioning

confidence: 99%