MECHANICAL PROPERTIES AND PHASE STRUCTURE OF YTTRIA-STABILIZED TETRAGONAL ZIRCONIA POLYCRYSTALS AFTER LOW-TEMPERATURE AGING FORLONG TERM
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概要
- 論文の詳細を見る
Mechanical properties and phase structure of yttria-stabilized tetragonal zirconia polycrystals aged in air at 200° and 300℃ for 25000h(about 3 years)were investigated. The bending strength and dynamic hardness of the aged samples were reduced after the aging. The remarkable tetragonal-to-monoclinic phase transformation occurred in surface and sub-surface layers of the sample within 100μm from the surface. The monoclinic phase fraction of the aged samples, especially aged at 200℃, was much larger than that of the unaged samples. The bending strength and dynamic hardness decreased drastically when the monoclinic phase fraction exceeded 60%. Several samples were collapsed during the aging at 200℃ of which monoclinic phase fraction finally exceeded 65%.
- 社団法人日本材料学会の論文
- 1996-09-15
著者
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Masaki T
Toray Ind. Inc. Shiga
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Masaki Takaki
Electronic & Imaging Materials Research Laboratories Toray Industries Inc.
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OISHI Manabu
Research Division, Toray Research Center, Inc.
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KITANO Yukishige
Research Division, Toray Research Center, Inc.
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IWANAGA Hikaru
Research Division, Toray Research Center, Inc.
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Oishi M
Research Division Toray Research Center Inc.
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Iwanaga Hikaru
Research Division Toray Research Center Inc.
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Kitano Yukishige
Research Division Toray Research Center Inc.
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Masaki Takaki
Electronic & Imaging Materials Research Lab. Toray Ind. Inc.
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- MECHANICAL PROPERTIES AND PHASE STRUCTURE OF YTTRIA-STABILIZED TETRAGONAL ZIRCONIA POLYCRYSTALS AFTER LOW-TEMPERATURE AGING FORLONG TERM
- Residual Stress Induced Phase Transformation in Y-TZP and WC/Y-TZP (ニュ-コンポジット材料)