High sinterability nano-Y2O3 powders prepared via decomposition of hydroxyl-carbonate precursors for transparent ceramics

Zhang, Le; Li, Zheng; Zhen, Fangzheng; Wang, Lixi; Zhang, Qitu; Sun, Rong; Selim, F. A.; Wong, Ching‐Ping; Chen, Hao

doi:10.1007/s10853-017-1071-0

Cited by 44 publications

(9 citation statements)

References 33 publications

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“…The band at 880 cm −1 can be inferred to the Mg‐O bond 32 . The peak at 1060 cm −1 is possibly arising from hydride ion, 33 whereas the band in the region 1405 and 1511 cm −1 ascribed to the CO 3 2− group 34 chemisorbed over the YM surface. The small band at 2360 cm −1 is coming from the adsorption of CO 2 molecules 33 .…”

Section: Resultsmentioning

confidence: 96%

Scalable and tunable Y₂O₃‐MgO composite for infrared transparency applications

Kumar

Kim

et al. 2022

J Am Ceram Soc

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The process-structure-property correlationships in yttria-magnesia (YM) composite have been investigated. YM composite was synthesized using commercial powders via ball-milling route with three different grinding balls (Si 3 N 4 , Al 2 O 3 , ZrO 2 ) having two different sizes (2 and 5 mm diameter). The alteration in grinding ball material and size produces sintered ceramic having different grain sizes (420-560 nm) and degree of phase mixing homogeneity (0.40-0.70). The contamination induced by the milling ball resulted in changes in Y 2 O 3 and MgO defect chemistry, which influenced the grain growth behavior in the YM composite. The hot-pressed composite prepared using 2-mm Si 3 N 4 ball-milled powders exhibited the finest grain size (420 nm) and better phase mixing homogeneity (0.63). The subsequent impact was seen on transmittance efficiency (71%) over the 3-7-μm wavelength range, which is ∼85% of the theoretical limit. The findings show that the selection of the right size and type of grinding ball for milling commercial powder is a simple and cost-effective way for scalable production of YM composite with high transmittance efficiency for infrared windows and dome applications.

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Section: Resultsmentioning

confidence: 96%

Scalable and tunable Y₂O₃‐MgO composite for infrared transparency applications

Kumar

Kim

et al. 2022

J Am Ceram Soc

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“…The IR transmittance graph of the low heating rate (5°C/min) shows the same trend as that of the typical pattern of commercial Y 2 O 3 . 26) However, in the case of the high heating rate (20°C/min), a difference was observed as compared to the typical IR transmittance graph of Y 2 O 3 . The peaks located at 2555 and 2950 cm ¹1 were Fig.…”

Section: Spectroscopic Analysismentioning

confidence: 88%

Microstructural and spectroscopic analysis in non-uniform Y2O3 ceramics fabricated by spark plasma sintering

Lee

Kim

Hata

et al. 2021

J. Ceram. Soc. Japan

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“…The bands at 570 cm -1 and 480 cm -1 are characteristic of the Y _ O metal-oxygen stretching frequency of cubic Y2O3 64) . For the hydrated Y2O3, the peak at 630 cm -1 assignable to the Y _ O _ H stretching mode 62),63), 65) was clearly observed. This band is relatively weak for Y2O3/SiO2 because of the low Y2O3 loading.…”

Section: Effect Of Hydration On the Structure Of Y2o3mentioning

confidence: 95%

Y2O3系触媒を用いた均一系塩基フリー条件下でのグルコースからの乳酸合成

Hata

Aihara

Miura

et al. 2021

J. Jpn. Petrol. Inst.

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Methods to catalytic conversion of glucose into lactic acid (LA), which is a versatile platform chemical, have been widely investigated. Herein, various kinds of metal oxide catalysts were used for lactic acid (LA) production from glucose under strong homogeneous base-free conditions. Among the metal oxides tested, Y2O3 afforded LA in moderate yield (33 %) together with trioses (dihydroxyacetone and glyceraldehyde) and fructose. It was found that the Y2O3/SiO2 catalyst can effectively catalyze the transformation of glucose into LA. Compared to Y2O3, the LA yield was remarkably improved (45 %). The characterization results showed that Y(OH)3 was highly dispersed on the Y2O3/SiO2 catalyst, acting as a Brønsted base and promoting LA formation from pyruvaldehyde (PA). Brønsted acid sites (hydroxyl groups) located at the interface between Y(OH)3 and SiO2 promoted the dehydration of trioses to form PA. The acid and base sites on the Y2O3/SiO2 catalyst functioned in concert to ensure that the overall reaction proceeded efficiently.

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High sinterability nano-Y2O3 powders prepared via decomposition of hydroxyl-carbonate precursors for transparent ceramics

Cited by 44 publications

References 33 publications

Scalable and tunable Y₂O₃‐MgO composite for infrared transparency applications

Scalable and tunable Y₂O₃‐MgO composite for infrared transparency applications

Microstructural and spectroscopic analysis in non-uniform Y<sub>2</sub>O<sub>3</sub> ceramics fabricated by spark plasma sintering

Y<sub>2</sub>O<sub>3</sub>系触媒を用いた均一系塩基フリー条件下でのグルコースからの乳酸合成

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High sinterability nano-Y2O3 powders prepared via decomposition of hydroxyl-carbonate precursors for transparent ceramics

Cited by 44 publications

References 33 publications

Scalable and tunable Y2O3‐MgO composite for infrared transparency applications

Scalable and tunable Y2O3‐MgO composite for infrared transparency applications

Microstructural and spectroscopic analysis in non-uniform Y<sub>2</sub>O<sub>3</sub> ceramics fabricated by spark plasma sintering

Y<sub>2</sub>O<sub>3</sub>系触媒を用いた均一系塩基フリー条件下でのグルコースからの乳酸合成

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Scalable and tunable Y₂O₃‐MgO composite for infrared transparency applications

Scalable and tunable Y₂O₃‐MgO composite for infrared transparency applications