Significant Reduction in Hydration Energy for Yttria Stabilized Zirconia Grain Boundaries and the Consequences for Proton Conduction

Langmuir ◽  
2014 ◽  
Vol 30 (34) ◽  
pp. 10456-10464 ◽  
Author(s):  
James A. Dawson ◽  
Isao Tanaka
2001 ◽  
Vol 703 ◽  
Author(s):  
Ho-Soon Yang ◽  
J.A. Eastman ◽  
L.J. Thompson ◽  
G.-R. Bai

ABSTRACTUnderstanding the role of grain boundaries in controlling heat flow is critical to the success of many envisioned applications of nanocrystalline materials. This study focuses on the effect of grain boundaries on thermal transport behavior in nanocrystalline yttria-stabilized zirconia (YSZ) coatings prepared by metal-organic chemical vapor deposition.


2004 ◽  
Vol 10 (S02) ◽  
pp. 304-305 ◽  
Author(s):  
James P Buban ◽  
Katsuyuki Matsunaga ◽  
Takahisa Yamamoto ◽  
Yuichi Ikuhara

Extended abstract of a paper presented at Microscopy and Microanalysis 2004 in Savannah, Georgia, USA, August 1–5, 2004.


2014 ◽  
Vol 122 (1426) ◽  
pp. 430-435 ◽  
Author(s):  
Takanori KIGUCHI ◽  
Yumiko KODAMA ◽  
Toyohiko J. KONNO ◽  
Hiroshi FUNAKUBO ◽  
Osamu SAKURAI ◽  
...  

1995 ◽  
Vol 30 (4) ◽  
pp. 515-522 ◽  
Author(s):  
M.T. Colomer ◽  
L.S.M. Traqueia ◽  
J.R. Jurado ◽  
F.M.B. Marques

Author(s):  
L.A. Tietz ◽  
C.B. Carter ◽  
D.K. Lathrop ◽  
S.E. Russek ◽  
R.A. Buhrman

Much attention has recently been paid to the characterization of twin boundaries in YBa2Cu3O7-x (YBCO). However, in polycrystalline samples other high-angle grain boundaries may have a much more significant effect on, not only the superconducting behavior, but also the chemical and mechanical stability of the material. In the present study, attention has therefore also been focussed on several types of low-angle and high-angle grain boundaries. Such boundaries are frequently found in thin films of this material which are grown on {001}-oriented, single-crystal yttria-stabilized zirconia (YSZ) or magnesium oxide by electron beam co-evaporation of the metals in an oxygen atmosphere. The fact that over most of the substrate these films are oriented epitactically with respect to the zirconia substrate means that these high-angle grain boundaries can be characterized in a relatively routine manner using selected-area diffraction. The high-angle boundaries observed in this study include those produced by 23.5°, 29°, and 45° rotations about [001] and 90° rotations about [100] or [010]. These boundaries are compared to special high-angle grain boundaries in cubic materials.


2017 ◽  
Vol 311 ◽  
pp. 46-51 ◽  
Author(s):  
Makoto Takayanagi ◽  
Takashi Tsuchiya ◽  
Kinya Kawamura ◽  
Makoto Minohara ◽  
Koji Horiba ◽  
...  

2005 ◽  
Vol 106 ◽  
pp. 83-86
Author(s):  
A. Rizea ◽  
Jean Marc Raulot ◽  
C. Petot ◽  
Georgette Petot-Ervas ◽  
Gianguido Baldinozzi

This work was directed at a comprehensive study of the role of the nanostructure and nanochemistry on the transport properties of yttria-stabilized zirconia. Alumina additions lead to a decrease of sgb when the samples have clean grain boundaries, while sgb goes through a maximum in samples having glassy grain boundaries. The differences were attributed to the strong interaction between Al2O3 and SiO2 impurities leading to a glassy phase depletion at the grain-boundaries, due to a change in wettability. Moreover, XPS analyses show that Si and Y segregate near these interfaces according to a kinetic demixing process, explaining why a faster cooling rate after sintering has a beneficial effect on sgb.


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