Improvements in microstructural and mechanical properties of ZrO2 ceramics after addition of BaO

Aktaş, Bülent; Tekeli, Süleyman; Salman, Serdar

doi:10.1016/j.ceramint.2015.11.049

Cited by 26 publications

(5 citation statements)

References 12 publications

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“…As listed in Table 1, the Vickers hardness and indentation fracture toughness were estimated to be H V ≈ 14.1 GPa and K IC ≈ 1.10 MPa m 1/2 , irrespective of the indentation load examined in this study. The obtained results are in good agreement with the previous reports of H V = 12–15 GPa and K IC = 1.2–1.6 MPa m 1/2 39,45,47–50 …”

Section: Resultssupporting

confidence: 92%

Effect of DC and AC electric fields on crack healing behavior in 8 mol% yttria‐stabilized cubic zirconia polycrystal

et al. 2023

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The effect of the flash event (FE) on microcrack healing behavior in 8 mol% yttria‐stabilized zirconia was examined at healing temperatures of 1040 and 1230°C under the direct and alternating (DC and AC) electric fields. The crack healing behavior changed depending on the factors of the electric field, healing temperature, and crack length. Although the crack healing proceeded with the temperature, the healing rate increased with the crack length, suggesting that the external energy stored as crack surface energy would provide a driving force for the crack healing. Although the crack healing occurs even under the static annealing without the electric field, the healing rate was accelerated by FE significantly more under the AC field than under the DC field. The microcracks with a length of ≈20 μm were fully healed at 1230°C only for 10 min by the FE treatment under the AC field, and the flash healing behavior was four times faster than that of the static annealing. These results suggest that the enhanced healing behavior cannot be explained only by thermal effects, and the accelerated diffusivity caused additionally by nonthermal effect under FE might contribute to the enhanced healing behavior, especially in the AC electric field.

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Section: Resultssupporting

confidence: 92%

Effect of DC and AC electric fields on crack healing behavior in 8 mol% yttria‐stabilized cubic zirconia polycrystal

et al. 2023

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“…The density of the SrO-and BaO-doped 10Ce ceramics was low (Table 1), since a large amount of m-ZrO2 grains with twinning morphology were clearly observed in the BaO/SrO-doped ceramics (Fig. 2a) and a high BaO content also resulted in a porous microstructure [65]. The hardness of SrO/BaO-doped 10Ce-TZP was very low and in the range of 6.8-5.3 GPa, being in line with their low density and microcracked microstructure.…”

Section: Influence Of Dopant-cation Radius On Microstructure and Dens...mentioning

confidence: 99%

Tough and damage-tolerant monolithic zirconia ceramics with transformation-induced plasticity by grain-boundary segregation

Tunca

Meerbeek

et al. 2023

Journal of the European Ceramic Society

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“…This is due to the high grain boundary conductivities for the sample with CuO ones where bulk grain boundary conductivity is similar to the ZnO ones. Aktas et al studied the impact of BaO as a sintering aid on BaZr 0.92 Y 0.08 O 3-δ ceramics earlier [85]. The powders were synthesized by mechanical mixing of BZY powders with BaO followed by the high-temperature sintering process.…”

Section: Sintering Aidmentioning

confidence: 99%

Recent progress in the experimental and theoretical studies on the barium zirconate proton conductors: A review

Hossain¹,

Biswas²,

Chanda³

et al. 2021

Preprint

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There have been significant developments of solid-state-ion conducting energy materials and perovskite-based oxides those exhibit excellent proton conduction at intermediate temperatures. In contrast to high-temperature oxygen ion-conducting oxides or low-temperature proton-conducting polymers, perovskite oxides have obtained distinguished attention because of their diversified structural aspects and potential applications. Highly stable and conductive electrolytes with improved electrochemical and thermochemical properties are in great demand in numerous fields such as portable electronics and transport systems, energy storage, fuel cells, etc. This review focuses on recent development in the proton-conducting performance of BaZrO 3 (BZO) energy materials. This study aims to integrate the fundamentals of proton conducting BZO perovskites in the prospect of the recent development in materials science and computational engineering. Therefore, in the first half of this review, the basic overview of the BZO perovskites structure, fundamentals of working principles, fabrication, and processing methods underlying the successful development of these materials with superior performance is discussed. The second part principally concentrates on the significant improvement towards higher conductive BZO perovskite fabrication with the help of theoretical studies via density functional theory (DFT) based first-principles calculation and molecular dynamics (MD) simulation followed by the prominent applications in low-temperature solid oxide fuel cells. The presented information on in-depth analysis of the physical properties of barium zirconate from experimental and theoretical studies will guide aspirants in further conducting research in this field near future.

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Improvements in microstructural and mechanical properties of ZrO2 ceramics after addition of BaO

Cited by 26 publications

References 12 publications

Effect of DC and AC electric fields on crack healing behavior in 8 mol% yttria‐stabilized cubic zirconia polycrystal

Effect of DC and AC electric fields on crack healing behavior in 8 mol% yttria‐stabilized cubic zirconia polycrystal

Tough and damage-tolerant monolithic zirconia ceramics with transformation-induced plasticity by grain-boundary segregation

Recent progress in the experimental and theoretical studies on the barium zirconate proton conductors: A review

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