Evaluation of elastic and strength properties of Ni-YSZ cermets for solid oxide fuel cells under redox cycling

K. Sato; T. Miyasaka; S. Watanabe; T. Hashida

doi:10.1149/05701.0753ecst

Evaluation of elastic and strength properties of Ni-YSZ cermets for solid oxide fuel cells under redox cycling

K. Sato, T. Miyasaka, S. Watanabe, T. Hashida

Tohoku University

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

Abstract

The effects of pore volume in Ni-YSZ cermets on their mechanical properties under redox cycling were examined using a small punch (SP) testing method. The volume fractions of pores Vp in as-sintered NiO-YSZ specimens were in the range of 0-30%, and with the Ni/YSZ mixture ratio of 50:50%. All the measurements were conducted at 800 C. For Vp>20%, the measured Young's modulus and strength of re-oxidized NiO-YSZ cermets were almost close to those of the as-sintered cermets. The experimental result indicates that the appropriate selection of Vp is necessary for ensuring the mechanical properties during redox cycling.

Original language	English
Pages (from-to)	753-762
Number of pages	10
Journal	ECS Transactions
Volume	57
Issue number	1
DOIs	https://doi.org/10.1149/05701.0753ecst
Publication status	Published - 2013

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10.1149/05701.0753ecst

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abstract = "The effects of pore volume in Ni-YSZ cermets on their mechanical properties under redox cycling were examined using a small punch (SP) testing method. The volume fractions of pores Vp in as-sintered NiO-YSZ specimens were in the range of 0-30%, and with the Ni/YSZ mixture ratio of 50:50%. All the measurements were conducted at 800 C. For Vp>20%, the measured Young's modulus and strength of re-oxidized NiO-YSZ cermets were almost close to those of the as-sintered cermets. The experimental result indicates that the appropriate selection of Vp is necessary for ensuring the mechanical properties during redox cycling.",

author = "K. Sato and T. Miyasaka and S. Watanabe and T. Hashida",

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AU - Miyasaka, T.

AU - Watanabe, S.

AU - Hashida, T.

PY - 2013

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N2 - The effects of pore volume in Ni-YSZ cermets on their mechanical properties under redox cycling were examined using a small punch (SP) testing method. The volume fractions of pores Vp in as-sintered NiO-YSZ specimens were in the range of 0-30%, and with the Ni/YSZ mixture ratio of 50:50%. All the measurements were conducted at 800 C. For Vp>20%, the measured Young's modulus and strength of re-oxidized NiO-YSZ cermets were almost close to those of the as-sintered cermets. The experimental result indicates that the appropriate selection of Vp is necessary for ensuring the mechanical properties during redox cycling.

AB - The effects of pore volume in Ni-YSZ cermets on their mechanical properties under redox cycling were examined using a small punch (SP) testing method. The volume fractions of pores Vp in as-sintered NiO-YSZ specimens were in the range of 0-30%, and with the Ni/YSZ mixture ratio of 50:50%. All the measurements were conducted at 800 C. For Vp>20%, the measured Young's modulus and strength of re-oxidized NiO-YSZ cermets were almost close to those of the as-sintered cermets. The experimental result indicates that the appropriate selection of Vp is necessary for ensuring the mechanical properties during redox cycling.

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Evaluation of elastic and strength properties of Ni-YSZ cermets for solid oxide fuel cells under redox cycling

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