Energy efficient synthesis of porous ZrO2 with fine closed pores by microwave irradiation

Hashimoto, Shinobu; Umeda, Tomoya; Kondo, Naoki; Hyuga, Hideki; Zhou, You; Honda, Sawao; Iwamoto, Yuji

doi:10.1016/j.matlet.2012.11.111

Cited by 6 publications

(5 citation statements)

References 6 publications

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“…13 (c)). Until recently, the superplastic foaming method was mainly used to fabricate lightweight alumina and zirconia [102][103][104][105][106][107][108] owing to their good high-temperature superplasticity. The properties of the fabricated materials are mainly affected by the type, particle size, and amount of the starting material and high-temperature foaming agent.…”

Section: Superplastic Foamingmentioning

confidence: 99%

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Design, fabrication and properties of lightweight wear lining refractories: A review

Huang

et al. 2022

Journal of the European Ceramic Society

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Section: Superplastic Foamingmentioning

confidence: 99%

“…Lightweight zirconia was fabricated using nano-zirconia as the starting material and hydroxyapatite as the foaming agent [105]. By adding SiO2 and TiO2 additives, lightweight zirconia with a closed porosity of 24.6% and an open porosity of 2.1% was obtained.…”

Section: Superplastic Foamingmentioning

confidence: 99%

Design, fabrication and properties of lightweight wear lining refractories: A review

Huang

et al. 2022

Journal of the European Ceramic Society

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“…Lightweight refractories are typically fabricated by introducing lightweight, coarse particles as aggregates. Several techniques have been employed to develop lightweight refractory aggregates, such as partial sintering, 16–18 in situ decomposition, 19–21 the addition of pore‐forming agents, 22,23 and superplastic foaming 24,25 . However, the main challenge in developing a lightweight wear lining is achieving a tradeoff between heat insulation and service life.…”

Section: Introductionmentioning

confidence: 99%

“…Several techniques have been employed to develop lightweight refractory aggregates, such as partial sintering, [16][17][18] in situ decomposition, [19][20][21] the addition of pore-forming agents, 22,23 and superplastic foaming. 24,25 However, the main challenge in developing a lightweight wear lining is achieving a tradeoff between heat insulation and service life. Better heat insulation always requires higher porosity; however, this results in the degradation of the slag resistance and mechanical properties of the materials.…”

Section: Introductionmentioning

confidence: 99%

Lightweight corundum–spinel ladle wear lining castable with low thermal conductivity

Wei,

Guo,

et al. 2024

J Am Ceram Soc.

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Designing a lightweight wear‐lining refractory is of great significance for energy savings and consumption reduction. In this study, an in‐house manufactured porous alumina aggregate was selected to replace the commercial tabular alumina aggregate to prepare lightweight corundum–spinel castable (LCSC) for ladle linings. The effect of the porous alumina aggregate on the properties of the corundum–spinel castable was investigated. Compared to tabular alumina, porous alumina possesses higher closed porosity (12.1%) and a small pore size (4.25 µm). The thermal conductivity of LCSC is 21.5% lower than that of dense castable at 1000°C. Owing to the existence of micropores in the porous alumina, the fabricated corundum–spinel castable showed an improved degree of bonding between the aggregate and matrix. Therefore, the lightweight castable showed higher flexural strength and considerable slag corrosion resistance than the dense castable.

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“…Inúmeras técnicas foram desenvolvidas para produzir cerâmicas porosas [8] e ainda vem sendo desenvolvidas [9][10][11] , a fim de melhorar as propriedades finais do corpo [12] .…”

Section: Zircônia:ítriaunclassified

Inclusão e remoção térmica de NaCl, Kl e grafite para obtenção de cerâmicas porosas de zircônia estabilizada com ítria

Carvalho¹

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Gostaria de agradecer primeiramente ao Dr. Reginaldo Muccillo pela orientação, ensinamentos e paciência desde a iniciação científica. À Dra. Eliana N. S. Muccillo, pelas discussões e ensinamentos. Ao CNPq pela bolsa de Mestrado concedida. Ao IPEN pela oportunidade de realizar este trabalho. À Yone V. França pelas análises térmicas e pelo auxílio no laboratório. Ao Dr. José Roberto Martinelli pelas análises por fluorescência de raios X. Ao Dr. Douglas Gouvêa e ao Dr. Silvio Miranda pelas análises de porosimetria por intrusão de mercúrio. Aos colegas do Centro de Ciência e Tecnologia de Materiais, pelas discussões e momentos de descontração. Não poderia deixar de agradecer aos meus pais, Estevão e Marinilza, sem eles não estaria aqui, e aos meus irmãos Nathália e Matheus. Em especial ao meu esposo Evandro Bittencourt Cruz, que sempre me apoiou e me ajudou, pela enorme paciência que teve comigo. E a todos que contribuíram direta ou indiretamente para realização deste trabalho. Palavras-chave: zircônia:ítria, porosidade, espectroscopia de impedância.

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Energy efficient synthesis of porous ZrO2 with fine closed pores by microwave irradiation

Cited by 6 publications

References 6 publications

Design, fabrication and properties of lightweight wear lining refractories: A review

Design, fabrication and properties of lightweight wear lining refractories: A review

Lightweight corundum–spinel ladle wear lining castable with low thermal conductivity

Inclusão e remoção térmica de NaCl, Kl e grafite para obtenção de cerâmicas porosas de zircônia estabilizada com ítria

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