Anisotropy of fracture toughness of stabilized zirconia investigated by nano-identation method

Hideaki Ito; Kazuhisa Sato; Atsushi Unemoto; Shinichi Hashimoto; Koji Amezawa; Tatsuya Kawada

doi:10.2320/matertrans.MB201705

Anisotropy of fracture toughness of stabilized zirconia investigated by nano-identation method

Hideaki Ito, Kazuhisa Sato, Atsushi Unemoto, Shinichi Hashimoto, Koji Amezawa, Tatsuya Kawada

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

1 Citation (Scopus)

Abstract

Nano-indentation tests with a Vickers-type diamond tip were carried out on the {100} surface of a single crystal of 10 mol% yttria-stabilized zirconia (10YSZ), (Y₂O₃)_0.1(ZrO₂)0.9. By changing the contact angle of the indentation tip against the single crystal sample, the fracture toughness of 10YSZ was investigated as a function of the crystal orientation from <100> to <110> on the {100} surface. It was empirically shown that the fracture toughness of 10YSZ is anisotropic. The fracture toughness of 10YSZ was lowest in the direction of <100> among investigated orientations. This result suggests that mechanical failures in 10YSZ may occur preferentially along the direction of <100>.

Original language	English
Pages (from-to)	23-26
Number of pages	4
Journal	Materials Transactions
Volume	59
Issue number	1
DOIs	https://doi.org/10.2320/matertrans.MB201705
Publication status	Published - 2018

Keywords

Anisotropy
Fracture toughness
Nano-indentation
Yttria-stabilized Zirconia

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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title = "Anisotropy of fracture toughness of stabilized zirconia investigated by nano-identation method",

abstract = "Nano-indentation tests with a Vickers-type diamond tip were carried out on the {100} surface of a single crystal of 10 mol% yttria-stabilized zirconia (10YSZ), (Y2O3)0.1(ZrO2)0.9. By changing the contact angle of the indentation tip against the single crystal sample, the fracture toughness of 10YSZ was investigated as a function of the crystal orientation from <100> to <110> on the {100} surface. It was empirically shown that the fracture toughness of 10YSZ is anisotropic. The fracture toughness of 10YSZ was lowest in the direction of <100> among investigated orientations. This result suggests that mechanical failures in 10YSZ may occur preferentially along the direction of <100>.",

keywords = "Anisotropy, Fracture toughness, Nano-indentation, Yttria-stabilized Zirconia",

author = "Hideaki Ito and Kazuhisa Sato and Atsushi Unemoto and Shinichi Hashimoto and Koji Amezawa and Tatsuya Kawada",

note = "Funding Information: This work was made as a part of the research project on development of systems and elemental technology on SOFC, which was supported by the New Energy and Industrial Technology Development Organization (NEDO), Japan. Publisher Copyright: {\textcopyright} 2017 The Japan Institute of Metals and Materials.",

year = "2018",

doi = "10.2320/matertrans.MB201705",

language = "English",

volume = "59",

pages = "23--26",

journal = "Materials Transactions",

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T1 - Anisotropy of fracture toughness of stabilized zirconia investigated by nano-identation method

AU - Ito, Hideaki

AU - Sato, Kazuhisa

AU - Unemoto, Atsushi

AU - Hashimoto, Shinichi

AU - Amezawa, Koji

AU - Kawada, Tatsuya

N1 - Funding Information: This work was made as a part of the research project on development of systems and elemental technology on SOFC, which was supported by the New Energy and Industrial Technology Development Organization (NEDO), Japan. Publisher Copyright: © 2017 The Japan Institute of Metals and Materials.

PY - 2018

Y1 - 2018

N2 - Nano-indentation tests with a Vickers-type diamond tip were carried out on the {100} surface of a single crystal of 10 mol% yttria-stabilized zirconia (10YSZ), (Y2O3)0.1(ZrO2)0.9. By changing the contact angle of the indentation tip against the single crystal sample, the fracture toughness of 10YSZ was investigated as a function of the crystal orientation from <100> to <110> on the {100} surface. It was empirically shown that the fracture toughness of 10YSZ is anisotropic. The fracture toughness of 10YSZ was lowest in the direction of <100> among investigated orientations. This result suggests that mechanical failures in 10YSZ may occur preferentially along the direction of <100>.

AB - Nano-indentation tests with a Vickers-type diamond tip were carried out on the {100} surface of a single crystal of 10 mol% yttria-stabilized zirconia (10YSZ), (Y2O3)0.1(ZrO2)0.9. By changing the contact angle of the indentation tip against the single crystal sample, the fracture toughness of 10YSZ was investigated as a function of the crystal orientation from <100> to <110> on the {100} surface. It was empirically shown that the fracture toughness of 10YSZ is anisotropic. The fracture toughness of 10YSZ was lowest in the direction of <100> among investigated orientations. This result suggests that mechanical failures in 10YSZ may occur preferentially along the direction of <100>.

KW - Anisotropy

KW - Fracture toughness

KW - Nano-indentation

KW - Yttria-stabilized Zirconia

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JO - Materials Transactions

JF - Materials Transactions

IS - 1

ER -

Anisotropy of fracture toughness of stabilized zirconia investigated by nano-identation method

Abstract

Keywords

ASJC Scopus subject areas

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