Effect of Chemical Treatment on Interfacial Contact Resistance of Ferritic Stainless Steel as Bipolar Plate for PEMFC

2019 ◽  
Vol 41 (1) ◽  
pp. 1861-1868
Author(s):  
Kwang Min Kim ◽  
Jong Hee Kim ◽  
Kyoo Young Kim
Keyword(s):  
Stainless Steel ◽  
Contact Resistance ◽  
Ferritic Stainless Steel ◽  
Chemical Treatment ◽  
Bipolar Plate ◽  
Interfacial Contact ◽  
Interfacial Contact Resistance

scholarly journals Effect of N+ Implantation on Surface Characteristics of 316L Stainless Steels for Bipolar Plate in PEMFC

Coatings ◽  
2020 ◽  
Vol 10 (7) ◽  
pp. 604
Author(s):  
Yu-Sung Kim ◽  
Dae-Wook Kim ◽  
In-Sik Lee ◽  
Sungook Yoon ◽  
Daeil Kim ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Corrosion Resistance ◽  
Contact Resistance ◽  
316L Stainless Steel ◽  
Polymer Electrolyte Membrane ◽  
Surface Characteristics ◽  
Bipolar Plate ◽  
Applied Bias ◽  
Electrolyte Membrane ◽  
Interfacial Contact Resistance

Nitrogen was implanted into 316L stainless steel by plasma immersion ion implantation (PIII) for surface modification. Due to nitrogen implantation, the corrosion resistance and interfacial contact resistance (ICR) were improved compared to the bare 316L stainless steel. The improved corrosion resistance was attributed to the formation of the expanded austenite phase (γN). The phase formation was found to be closely related to the evolution of the (111) plane texture. The formation of γN is strongly related to applied bias voltages. When bias voltages were increased to 15 kV, the γN phase was partially decomposed due to the formation of excessive nitride, including the CrN phase. For the ICR, increased crystallite size is effective in reducing contact resistance, which might arise from a reduced number of the grain boundary with electron scattering. In particular, the applied bias voltage of 10 kV was the most effective to both corrosion resistance and ICR, and its performance satisfies the demand for a bipolar plate in the Polymer Electrolyte Membrane Fuel Cells (PEMFC).

scholarly journals Effects of CrN/TiN Coatings on Interfacial Contact Resistance of Stainless Steel 410 Bipolar Plates in Fuel Cells

2021 ◽  
pp. 133-139
Author(s):  
Mohsen Forouzanmehr ◽  
Kazem Reza Kashyzadeh ◽  
Amirhossein Borjali ◽  
Mosayeb Jafarnode ◽  
Mahmoud Chizari
Keyword(s):  
Stainless Steel ◽  
Fuel Cells ◽  
Contact Resistance ◽  
Coated Sample ◽  
Bipolar Plates ◽  
Tin Coatings ◽  
Interfacial Contact ◽  
Cathodic Arc Evaporation ◽  
Interfacial Contact Resistance ◽  
Arc Evaporation

AbstractChallenge on energy resources exists, especially when the fossil resources are limited. Fuel cells, as an alternative replacement, can be used. Fuel cells with coated bipolar plates are the interest of this paper. Current research is concerned with the effects of CrN/TiN coatings on interfacial contact resistance (ICR). Stainless steel 410 was selected as a base metal, and the coating process was performed using chromium nitride and titanium nitride by cathodic arc evaporation method. It was found that the surface roughness and ICR values of CrN-coated sample are lower than the TiN-coated sample. The concluded that the CrN layer could be replaced with the TiN layer for better performance of bipolar plates.

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