OS1603 Mechanical properties evaluations under simulated operating condition for SOFC materials
Details
We have attempted to construct multiscale model which can simulate inelastic deformation and stress state under operating conditions. It would need to the information about mechanical properties of solid oxide fuel cell constituent materials under operating condition for analysis model building up process and simulation indeed. Therefore, mechanical property of Ni-YSZ and yttria stabilized zirconia, used as SOFC common materials are evaluated under simulated operating condition by developed In-situ mechanical testing machine. From experimental result, Ni-YSZ composite has showed that ductile-like deformation was induced under 800℃/H_2 condition for the Ni contents of 30 and 50 vol. % from the SP tests, and creep behavior is due to its ductility from creep tests. On the other hand, 8YSZ has showed creep rupture propagation guessed crack growth under air/850℃ condition.
