|
|
|
| Corrosion and Conductivity Behavior of TiN Coating on 304 Stainless Steel Bipolar Plates |
Jie SHEN1,Wei LIU2,Tiegang WANG3,Taijun PAN1,2( ) |
1 School of Material Science and Engineering, Jiangsu Key Laboratory of Material Surface Technology, Changzhou University, Changzhou 213164, China
2 Shanghai Institute of Applied Physics, Chinese Academy of Science, Shanghai 201800, China
3 Tianjin Key Laboratory of High Speed Cutting and Precision Processing, Tianjin University of Technology and Education, Tianjin 300222, China |
|
|
|
|
Abstract TiN coating was prepared on the surface of 304 stainless steel by plasma spraying technology. The microstructure and phase composition of the coating was characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM). The corrosion performance of the 304 stainless steel without and with TiN coating was assessed by the potentiodynamic polarization and electrochemical impedance in the simulated proton exchange membrane fuel cell solutions containing 0.3 mol/L H2SO4 plus 2 mg/L HF. Moreover, electrical conductivity of them was also compared. The results indicated that TiN coating significantly increased the free corrosion potential of the steel and induced a decrease of the corresponding corrosion current density by one order of magnitude, which is attributed to the presence of the continuous and compact coating of about 20 μm in thickness. During the whole period of 360 h immersion, the open circuit potential of the coating was obviously higher than that of the bare substrate, suggesting the excellent stability of coating. The impedance of the coating decreased slightly with immersion time but still remained in high level, suggesting that the TiN coating could provide the effective protection for the substrate. The interface contact resistance of the TiN coating was about 50 mΩcm-2 by an applied load of 138 Ncm-2, obviously smaller than that of the bare 304 stainless steel, exhibiting better conductivity.
|
|
Received: 09 September 2016
|
| Fund: Supported by National Natural Science Foundation of China (51101023 and 51301181), Jiangsu Province Science and Technology Program (BY2016029-07), Changzhou Science and Technology Program (CF20140004) and Taijin Applied Foundation and Advanced Technology Key Program (15JCZDJC39700) |
| [1] | Ren Y J, Zhang C R, Liu G M, et al.A review on corrosion and protection of metallic bipolar plates for proton exchange membrane fuel cell[J]. Corros. Sci. Prot. Technol., 2009, 21: 388 | | [1] | (任延杰, 张春荣, 刘光明等. 质子交换膜燃料电池金属双极板的腐蚀与表面防护研究进展[J]. 腐蚀科学与防护技术, 2009, 21: 388) | | [2] | Pan T J, Zuo X W, Wang T, et al.Electrodeposited conductive polypyrrole/polyaniline composite film for the corrosion protection of copper bipolar plates in proton exchange membrane fuel cells[J]. J. Power Sources, 2016, 302: 180 | | [3] | Zhang H F, Yi B L, Hou M, et al.Materials for bipolar plates in proton-exchange membrane fuel cells and their preparation[J]. Chin. J. Power Sources, 2003, 27(2): 129 | | [3] | (张海峰, 衣宝廉, 侯明等. 质子交换膜燃料电池双极板的材料与制备[J]. 电源技术, 2003, 27(2): 129) | | [4] | Pan T J, Zhang B, Li J, et al.An investigation on corrosion protection of chromium nitride coated Fe-Cr alloy as a bipolar plate material for proton exchange membrane fuel cells[J]. J. Power Sources, 2014, 269: 81 | | [5] | Pan T J, Chen Y, Zhang B, et al.Corrosion behavior of niobium coated 304 stainless steel in acid solution[J]. Appl. Surf. Sci., 2016, 369: 320 | | [6] | Nikam V V, Reddy R G, Collins S R, et al.Corrosion resistant low temperature carburized SS 316 as bipolar plate material for PEMFC application[J]. Electrochim. Acta, 2008, 53: 2743 | | [7] | Feng K, Wu G, Li Z, et al.Corrosion behavior of SS316L in simulated and accelerated PEMFC environments[J]. Int. J. Hydrog. Energy, 2011, 36: 13032 | | [8] | Li M C, Luo S Z, Zeng C L, et al.Corrosion behavior of TiN coated type 316 stainless steel in simulated PEMFC environments[J]. Corros. Sci., 2004, 46: 1369 | | [9] | Ren Y J, Zeng C L.Corrosion protection of 304 stainless steel bipolar plates using TiC films produced by high-energy micro-arc alloying process[J]. J. Power Sources, 2007, 171: 778 | | [10] | Wang Y, Northwood D O.An investigation of the electrochemical properties of PVD TiN-coated SS410 in simulated PEM fuel cell environments[J]. Int. J. Hydrog. Energy, 2007, 32: 895 | | [11] | Wang H, Sweikart M A, Turner J A.Stainless steel as bipolar plate material for polymer electrolyte membrane fuel cells[J]. J. Power Sources, 2003, 115: 243 | | [12] | Xia M, Wang Z H, Bo F, et al.Research progress of reactive plasma sprayed TiN coating[J]. Surf. Technol., 2015, 44(8): 1 | | [12] | (夏铭, 王泽华, 柏芳等. 反应等离子喷涂TiN涂层的研究进展[J]. 表面技术, 2015, 44(8): 1) | | [13] | Qian Y, Xu J.Properties of Zr nanocrystalline coating on Ti alloy bipolar plates in simulated PEMFC environments[J]. Acta Phys.-Chim. Sin., 2015, 31: 291 | | [13] | (钱阳, 徐江. 钛合金双极板表面纳米晶Zr涂层在质子交换膜燃料电池环境中的性能[J]. 物理化学学报, 2015, 31: 291) | | [14] | Yuan L, Wang H M.Corrosion behaviors of a γ-toughened Cr13Ni5Si2/Cr3Ni5Si2, multi-phase ternary metal silicide alloy in NaCl solution[J]. Electrochim. Acta, 2008, 54: 421 | | [15] | You H X, He G L, Ding X W, et al.state of PEMFC metal bipolar plate materials[J]. J. Chin. Soc. Corros. Prot., 2003, 23: 375 | | [15] | (由宏新, 何广利, 丁信伟等. 质子交换膜燃料电池金属双极板材料研究进展[J]. 中国腐蚀与防护学报, 2003, 23: 375) |
|
| No Suggested Reading articles found! |
|
|
Viewed |
|
|
|
Full text
|
|
|
|
|
Abstract
|
|
|
|
|
Cited |
|
|
|
|
| |
Shared |
|
|
|
|
| |
Discussed |
|
|
|
|
