PSI - Issue 2_B

A. Ueno et al. / Procedia Structural Integrity 2 (2016) 2323–2329 Author name / Structural Integrity Procedia 00 (2016) 000–000

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5. Summary and conclusions For evaluating chemical degradation of hydrocarbon films, tensile tests and hardness tests using nano-indenter were carried out. It was found that in case of soft polymer material such as hydrocarbon membrane, degradation caused a hardening and a drop in strength. It is concluded that hardness tests using nano-indenter, which is a non destructive testing method, are very useful for guaranteeing a reliability of the PEFC. Also, a degradation map by means of perforating testing machine is useful to visualizing the degraded area. Acknowledgments This research was performed under a grant from the Cell Evaluation Project of the New Energy and Industrial Technology Department Organization (NEDO). And authors would like to acknowledge Daido University for measuring a viscosity of hydrocarbon films. References Cleghorn, S., Kolde, J., Liu, W., 2003. Handbook of Fuel Cells – Fundamentals, Technology and Applications, edited by Wolf Vielstich, Arnold Lamm, Hubert A. Gasteiger, 3(3), 566-575. Sethuraman, V. A., Weidner, J. W., Hang, Andrew T., Motupally, S., Protsailo, L.V. 2008. Journal of the Electrochemical Society, 155 (1) B50 B57. Sethuraman, V. A., Weidner, J. W., Hang, Andrew T., Motupally, S., Protsailo, L.V. 2008. Journal of the Electrochemical Society, 155 (2) B119-B124. Ueno A, Matsunaga, K., 2008. Proc. of the 57th annual meeting of the Society of Materials Science, Japan (JSMS), 40-41.