ANNEALING EFFECT ON FRACTURE TOUGHNESS MEASUREMENT OF ZrO//2-TOUGHENED Al//2O//3 CERAMICS USING VICKERS INDENTATION.

Saburo Hori; Masahiro Yoshimura; Ryuichi Kurita; Hisatsugu Kaji; Shigeyuki Somiya

ANNEALING EFFECT ON FRACTURE TOUGHNESS MEASUREMENT OF ZrO//2-TOUGHENED Al//2O//3 CERAMICS USING VICKERS INDENTATION.

Saburo Hori, Masahiro Yoshimura, Ryuichi Kurita, Hisatsugu Kaji, Shigeyuki Somiya

Department of Materials Science and Engineering

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

4 Citations (Scopus)

Abstract

Surface grinding and polishing ZrO//2 prime s tetragonal-to-monoclinic transformation resulted in residual compressive surface stress in the ZrO//2-toughened Al//2O//3 (ZTA) ceramics. When the surface stress was removed by annealing the specimens at 1350 degree C for 1 h, the fracture toughness (K//i//c) values determined by Vickers indentation technique were independent of the Vickers load. But with the as-polished specimens, the K//i//c appeared larger and strongly dependent on the Vickers load, because the surface stress impeded the crack extension.

Original language	English
Pages (from-to)	296-297
Number of pages	2
Journal	Yogyo Kyokai Shi/Journal of the Ceramic Society of Japan
Volume	92
Issue number	5
Publication status	Published - 1984 Dec 1

All Science Journal Classification (ASJC) codes

Engineering(all)

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title = "ANNEALING EFFECT ON FRACTURE TOUGHNESS MEASUREMENT OF ZrO//2-TOUGHENED Al//2O//3 CERAMICS USING VICKERS INDENTATION.",

abstract = "Surface grinding and polishing ZrO//2 prime s tetragonal-to-monoclinic transformation resulted in residual compressive surface stress in the ZrO//2-toughened Al//2O//3 (ZTA) ceramics. When the surface stress was removed by annealing the specimens at 1350 degree C for 1 h, the fracture toughness (K//i//c) values determined by Vickers indentation technique were independent of the Vickers load. But with the as-polished specimens, the K//i//c appeared larger and strongly dependent on the Vickers load, because the surface stress impeded the crack extension.",

author = "Saburo Hori and Masahiro Yoshimura and Ryuichi Kurita and Hisatsugu Kaji and Shigeyuki Somiya",

year = "1984",

month = dec,

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volume = "92",

pages = "296--297",

journal = "Nippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan",

issn = "1882-0743",

publisher = "Ceramic Society of Japan/Nippon Seramikkusu Kyokai",

number = "5",

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ANNEALING EFFECT ON FRACTURE TOUGHNESS MEASUREMENT OF ZrO//2-TOUGHENED Al//2O//3 CERAMICS USING VICKERS INDENTATION. / Hori, Saburo; Yoshimura, Masahiro; Kurita, Ryuichi; Kaji, Hisatsugu; Somiya, Shigeyuki.

In: Yogyo Kyokai Shi/Journal of the Ceramic Society of Japan, Vol. 92, No. 5, 01.12.1984, p. 296-297.

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

TY - JOUR

T1 - ANNEALING EFFECT ON FRACTURE TOUGHNESS MEASUREMENT OF ZrO//2-TOUGHENED Al//2O//3 CERAMICS USING VICKERS INDENTATION.

AU - Hori, Saburo

AU - Yoshimura, Masahiro

AU - Kurita, Ryuichi

AU - Kaji, Hisatsugu

AU - Somiya, Shigeyuki

PY - 1984/12/1

Y1 - 1984/12/1

N2 - Surface grinding and polishing ZrO//2 prime s tetragonal-to-monoclinic transformation resulted in residual compressive surface stress in the ZrO//2-toughened Al//2O//3 (ZTA) ceramics. When the surface stress was removed by annealing the specimens at 1350 degree C for 1 h, the fracture toughness (K//i//c) values determined by Vickers indentation technique were independent of the Vickers load. But with the as-polished specimens, the K//i//c appeared larger and strongly dependent on the Vickers load, because the surface stress impeded the crack extension.

AB - Surface grinding and polishing ZrO//2 prime s tetragonal-to-monoclinic transformation resulted in residual compressive surface stress in the ZrO//2-toughened Al//2O//3 (ZTA) ceramics. When the surface stress was removed by annealing the specimens at 1350 degree C for 1 h, the fracture toughness (K//i//c) values determined by Vickers indentation technique were independent of the Vickers load. But with the as-polished specimens, the K//i//c appeared larger and strongly dependent on the Vickers load, because the surface stress impeded the crack extension.

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