Research on Application Performance of Corrosion Resistant Coating Cr2N in Proton Exchange Membrane Fuel Cells AITranslate
Abstract AITranslate
Cr2N coatings were deposited on 316 L stainless steel bipolar plates by solid powder embedding process.The corrosion resistance of the coatings was investigated by potentiodynamic tests and potentiostatic polarization tests,and the interfacial contact resistance(ICR)and contact angle were also determined.The results show that compared with 316 L stainless steel,the Cr2N coating deposited at 1100℃shows better phase morphology and corrosion resistance and lower ICR value.The corrosion current density of the Cr2N coating is about 5.01×10^-8 A/cm^2 at 0.84 V(vs.SHE),which is three magnitude orders lower than that of 316 L stainless steel.Its ICR value is 8.7 mΩ·cm^2 at 150 N/cm^2,which is about 1/8 of 316 L stainless steel.The Cr2N coating is dense,smooth and continuous,and its impedance and phase angle change in the electrolyte solution is small,which can prevent SO2-4and F-from penetrating into the substrate and result in effective anticorrosion.Moreover,the Cr2N coating can also improve the hydrophobicity of the bipolar plate.After the Cr2N coating is deposited,the contact angle of the stainless steel bipolar plate increases from 79.7°to 105.7°.Thus,the Cr2N coating is an ideal protective layer for 316 L stainless steel bipolar plates used in proton exchange membrane fuel cells.
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Basic Information:
DOI：
Chinese Library Classification Number:TG174.2[金属学及工艺—金属表面处理]
Citation Information:
Cr2N coatings were deposited on 316 L stainless steel bipolar plates by solid powder embedding process.The corrosion resistance of the coatings was investigated by potentiodynamic tests and potentiostatic polarization tests,and the interfacial contact resistance(ICR)and contact angle were also determined.The results show that compared with 316 L stainless steel,the Cr2N coating deposited at 1100℃shows better phase morphology and corrosion resistance and lower ICR value.The corrosion current density of the Cr2N coating is about 5.01×10^-8 A/cm^2 at 0.84 V(vs.SHE),which is three magnitude orders lower than that of 316 L stainless steel.Its ICR value is 8.7 mΩ·cm^2 at 150 N/cm^2,which is about 1/8 of 316 L stainless steel.The Cr2N coating is dense,smooth and continuous,and its impedance and phase angle change in the electrolyte solution is small,which can prevent SO2-4and F-from penetrating into the substrate and result in effective anticorrosion.Moreover,the Cr2N coating can also improve the hydrophobicity of the bipolar plate.After the Cr2N coating is deposited,the contact angle of the stainless steel bipolar plate increases from 79.7°to 105.7°.Thus,the Cr2N coating is an ideal protective layer for 316 L stainless steel bipolar plates used in proton exchange membrane fuel cells.
quote
| GB/T 7714-2015 | [1] ZHONG Jia, GENG Sai-sai, WANG Meng, et al. Research on Application Performance of Corrosion Resistant Coating Cr2N in Proton Exchange Membrane Fuel Cells[J]. Rare Metals and Cemented Carbides, 2020(3): 77-86. |
| MLA | [1] ZHONG Jia, et al., "Research on Application Performance of Corrosion Resistant Coating Cr2N in Proton Exchange Membrane Fuel Cells." Rare Metals and Cemented Carbides, no. 3, 2020, pp. 77-86. |
| APA | [1] ZHONG Jia, GENG Sai-sai, WANG Meng, CHEN Ming, DING Xia-nan, YANG Zhao-yi, & WANG Xin-dong. (2020). Research on Application Performance of Corrosion Resistant Coating Cr2N in Proton Exchange Membrane Fuel Cells. Rare Metals and Cemented Carbides(3), 77-86. |
| IEEE | [1] ZHONG Jia, GENG Sai-sai, WANG Meng, CHEN Ming, DING Xia-nan, YANG Zhao-yi, and WANG Xin-dong, "Research on Application Performance of Corrosion Resistant Coating Cr2N in Proton Exchange Membrane Fuel Cells," Rare Metals and Cemented Carbides, no. 3, pp. 77-86, 2020. keywords: {Cr2N coating;stainless steel bipolar plate;corrosion resistance;interface contact resistance;contact angle;proton exchange membrane fuel cell} |