Dopant effect on high-temperature plastic flow behavior and grain boundary chemistry in oxide ceramics

2005 ◽  
Vol 96 (2) ◽  
pp. 108-116
Author(s):  
Hidehiro Yoshida ◽  
Yuichi Ikuhara ◽  
Taketo Sakuma
Keyword(s):  
High Temperature ◽  
Grain Boundary ◽  
Plastic Flow ◽  
Flow Behavior ◽  
Oxide Ceramics ◽  
Dopant Effect ◽  
Boundary Chemistry

High temperature plastic flow and grain boundary chemistry in oxide ceramics

2005 ◽  
Vol 40 (12) ◽  
pp. 3129-3135 ◽  
Author(s):  
H. Yoshida ◽  
A. Kuwabara ◽  
T. Yamamoto ◽  
Y. Ikuhara ◽  
T. Sakuma
Keyword(s):  
High Temperature ◽  
Grain Boundary ◽  
Plastic Flow ◽  
Oxide Ceramics ◽  
Boundary Chemistry

High Temperature Plastic Flow and Ductility in Polycrystalline Oxide Ceramics: Doping Effect and Related Phenomena

2006 ◽  
Vol 45 ◽  
pp. 1620-1625
Author(s):  
Hidehiro Yoshida ◽  
Koji Morita ◽  
Byung Nam Kim ◽  
Keijiro Hiraga ◽  
Takahisa Yamamoto ◽  
...  
Keyword(s):  
High Temperature ◽  
Grain Boundary ◽  
Grain Boundaries ◽  
Plastic Flow ◽  
High Purity ◽  
Tetragonal Zirconia ◽  
Atomic Diffusion ◽  
Oxide Ceramics ◽  
Nano Structure ◽  
Matter Transport

High temperature creep and superplastic flow in high-purity oxide ceramics such as alumina and tetragonal zirconia polycrystals is very sensitive to a small amount of doping by various oxides. High-resolution transmission electron microscopy and an energy-dispersive X-ray spectroscopy analysis revealed that grain boundaries in high-purity oxide ceramics are free from amorphous phase, and that the doped cations tend to segregate along the grain boundaries. Since the high temperature plastic flow in oxide ceramics takes place mainly by grain boundary matter transport by atomic diffusion, the grain boundary nano-structure control must be a useful way to develop new high-performance functional ceramics in the near future.

scholarly journals Criterion for High Temperature Failure and Grain Boundary Chemistry in Superplastic TZP

2004 ◽  
Vol 45 (7) ◽  
pp. 2106-2111 ◽  
Author(s):  
Hidehiro Yoshida ◽  
Hitoshi Nagayama ◽  
Akihide Kuwabara ◽  
Taketo Sakuma
Keyword(s):  
High Temperature ◽  
Grain Boundary ◽  
Boundary Chemistry

scholarly journals Criterion for High Temperature Failure and Grain Boundary Chemistry in Superplastic TZP

2005 ◽  
Vol 69 (9) ◽  
pp. 835-840
Author(s):  
Hidehiro Yoshida ◽  
Hitoshi Nagayama ◽  
Akihide Kuwabara ◽  
Taketo Sakuma
Keyword(s):  
High Temperature ◽  
Grain Boundary ◽  
Boundary Chemistry

Dopant Effect on the High-Temperature Grain Boundary Sliding in Alumina

2004 ◽  
Vol 447-448 ◽  
pp. 299-304 ◽  
Author(s):  
Hidehiro Yoshida ◽  
Katsuyuki Matsunaga ◽  
Takahisa Yamamoto ◽  
Yuichi Ikuhara
Keyword(s):  
High Temperature ◽  
Grain Boundary ◽  
Grain Boundary Sliding ◽  
Dopant Effect ◽  
Boundary Sliding
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