Phase-transformation and grain-growth kinetics in yttria-stabilized tetragonal zirconia polycrystal doped with a small amount of alumina

Matsui, Koji; Yoshida, Hidehiro; Ikuhara, Yuichi

doi:10.1016/j.jeurceramsoc.2010.01.007

Cited by 47 publications

(56 citation statements)

References 33 publications

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“…A high Y 3+ segregation within a 10 nm region near grain boundary has been confirmed through a microstructure analysis [31,32]. The grain growth of t-phase in air is sluggish, due to the grain boundary is dragged by the Y 3+ solutes.…”

Section: Grain Growth Behaviourmentioning

confidence: 71%

“…The grain growth behaviour of tetragonal (t) phase during sintering above 1300 8C in air had been investigated [26,31,32,36]. A high Y 3+ segregation within a 10 nm region near grain boundary has been confirmed through a microstructure analysis [31,32].…”

Section: Grain Growth Behaviourmentioning

confidence: 97%

“…There is no t 0 -phase found in the specimens sintered in air. The formation of c phase has been related to the diffusion of Y 2 O 3 from inside of the grain to its boundary [31,32]. As the Y 2 O 3 segregation at the grain boundary reaches a value above $5.7 mol%, the c phase is formed.…”

Section: Phase Transitionmentioning

confidence: 99%

“…The cubic phase is formed as Y 2 O 3 content reaches 5.7 mol% [31,32]. The concentration of Y 2 O 3 as a function of location is analyzed by using EPMA technique.…”

Section: Phase Transitionmentioning

confidence: 99%

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Phase stability and microstructure evolution of yttria-stabilized zirconia during firing in a reducing atmosphere

Ho¹,

Tuan²

2011

Ceramics International

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Section: Grain Growth Behaviourmentioning

confidence: 71%

Section: Grain Growth Behaviourmentioning

confidence: 97%

Section: Phase Transitionmentioning

confidence: 99%

“…The cubic phase is formed as Y 2 O 3 content reaches 5.7 mol% [31,32]. The concentration of Y 2 O 3 as a function of location is analyzed by using EPMA technique.…”

Section: Phase Transitionmentioning

confidence: 99%

See 2 more Smart Citations

Phase stability and microstructure evolution of yttria-stabilized zirconia during firing in a reducing atmosphere

Ho¹,

Tuan²

2011

Ceramics International

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“…A flowing gas atmosphere of 10 % H 2 in Ar was used. The measurements were performed in temperature range 293-973 K at the frequencies from 0.1 Hz to 10 6 Hz with amplitude of the sinusoidal voltage 10 mV. The platinum paste was put on pellets as the electrode before conductivity measurements.…”

Section: Apparatusmentioning

confidence: 99%

The influence of the method of addition of Al2O3 to 3YSZ material on its thermal and electrical properties

Drożdż

2014

J Therm Anal Calorim

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The properties of tetragonal yttria-stabilized zirconia composites with the small addition of alumina (Al 2 O 3 -Y 2 O 3 -ZrO 2 composite) obtained on two ways of synthesis were studied in terms of usability for anode materials in solid oxide fuel cell. Both methods were based on citric synthesis: in the first one, Al 2 O 3 was coprecipitated with the tetragonal ZrO 2 in the form of citrate by citric acid, while in the second Al 2 O 3 was impregnated in the form of aluminium nitrate precursor on tetragonal ZrO 2 matrix. The obtained materials were analysed by X-ray diffraction, dilatometry and impedance spectroscopy. The results of measurements show that regardless of synthesis method, the addition of Al 2 O 3 influences the conductivity of samples by increasing their grain boundaries conductivity as an effect of removing of SiO 2 and decreasing of conductivity activation energy. The impregnation of Al 2 O 3 on tetragonal ZrO 2 and sintering of this material above shrinking temperature cause, however, radical decrease of porosity of materials, which disqualifies these samples as anode materials. In the case of samples obtained by coprecipitation the significant decrease of porosity is not observed.

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Preparation and properties of yttria-stabilized tetragonal phase zirconia nano-ceramics by high gravity

Liang

Yuan

et al. 2023

Appl. Phys. A

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Phase-transformation and grain-growth kinetics in yttria-stabilized tetragonal zirconia polycrystal doped with a small amount of alumina

Cited by 47 publications

References 33 publications

Phase stability and microstructure evolution of yttria-stabilized zirconia during firing in a reducing atmosphere

Phase stability and microstructure evolution of yttria-stabilized zirconia during firing in a reducing atmosphere

The influence of the method of addition of Al2O3 to 3YSZ material on its thermal and electrical properties

Preparation and properties of yttria-stabilized tetragonal phase zirconia nano-ceramics by high gravity

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