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Dive into the research topics where Taketo Sakuma is active.

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Featured researches published by Taketo Sakuma.


Scripta Materialia | 2003

The effect of grain boundary segregation on superplastic behavior in cation-doped 3Y-TZP

Kenji Nakatani; Hitoshi Nagayama; Hidehiro Yoshida; Takahisa Yamamoto; Taketo Sakuma

Abstract Superplastic behavior in 3Y-TZP is sensitively affected by 0.2 mol% of cation-doping. The flow stress in unsoluble cation-doped 3Y-TZP is correlated well with ionic radius of dopant-cation as well as that in soluble cation-doped 3Y-TZP. Results in HREM-EDS analysis indicates that the dopant effect on the superplasticity must be caused by the grain boundary segregation of dopant cation.


Science | 2003

Multifunctional Alloys Obtained via a Dislocation-Free Plastic Deformation Mechanism

Takashi Saito; Tadahiko Furuta; Junghwan Hwang; Shigeru Kuramoto; Kazuaki Nishino; Nobuaki Suzuki; Rong Chen; Akira Yamada; Kazuhiko Ito; Yoshiki Seno; Takamasa Nonaka; Hideaki Ikehata; Naoyuki Nagasako; Chihiro Iwamoto; Yuuichi Ikuhara; Taketo Sakuma


Journal of the American Ceramic Society | 2002

Current‐Voltage Characteristics across (0001) Twist Boundaries in Zinc Oxide Bicrystals

Yukio Sato; Fumiyasu Oba; Takahisa Yamamoto; Yuichi Ikuhara; Taketo Sakuma


Materials Transactions | 2003

Small Dopant Effect on Static Grain Growth and Flow Stress in Superplastic TZP

Hidehiro Yoshida; Hitoshi Nagayama; Taketo Sakuma


Materials Transactions | 2002

Grain Boundary Sliding and Atomic Structures in Alumina Bicrystals with (0001) Symmetric Tilt Grain Boundaries

Tsuyoshi Watanabe; Hidehiro Yoshida; Yuichi Ikuhara; Taketo Sakuma; Hiroyuki Muto; Mototsugu Sakai


Journal of the American Ceramic Society | 2002

Influence of Interaction between Neighboring Oxygen Ions on Phase Stability in Cubic Zirconia

Akihide Kuwabara; Junji Katamura; Yuichi Ikuhara; Taketo Sakuma


Key Engineering Materials | 2003

Densification Behavior and Grain Boundary Diffusivity in Cation-Doped Alumina

Satoshi Watanabe; Hidehiro Yoshida; Taketo Sakuma


Materials Science Forum | 2001

Superplastic Characteristics in Germania Based Codoped Y-TZP

Kazutaka Sasaki; Manabu Nakano; Junpei Mimurada; Yuichi Ikuhara; Taketo Sakuma


Materials Science Forum | 2001

Superplastic Flow Stress in Cation-Doped YSZ

Manabu Nakano; Junpei Mimurada; Kazutaka Sasaki; Yuichi Ikuhara; Taketo Sakuma


Materials Transactions | 2002

Internal Friction Behavior of Alumina Polycrystals with Engineered Grain Boundaries

Kazumi Nakagawa; Giuseppe Pezzotti; Ken’ichi Ota; Yuichi Ikuhara; Hidehiro Yoshida; Taketo Sakuma

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Hidehiro Yoshida

National Institute for Materials Science

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