Zirconia Reinforcement of Cement Free Alumina Refractory Castables by Two Routes

Rendtorff, Nicolás M.; Hipedinger, Nora Elba; Scian, Alberto N.; Aglietti, E.F.

doi:10.1016/j.mspro.2012.06.054

Cited by 7 publications

(5 citation statements)

References 10 publications

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“…Zirconia ceramics presents useful properties in terms of super-plasticity, strength, hardness, ionic conductivity, and low thermal conductivity [1][2][3]. These properties lead to many industrial applications such as machinery, dentistry, oxygen sensors, oxygen pumps, solid oxide fuel cells (SOFCs), thermal barrier coating and refractory ceramics [4][5][6][7]. Many consolidation processes are reported in the literature for zirconia using various fabrication methods including conventional sintering, hot pressing, spark plasma sintering, and hot isostatic pressing [8][9].…”

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confidence: 99%

Inherent heating instability of direct microwave sintering process: Sample analysis for porous 3Y-ZrO2

2017

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Direct microwave heating of 3Y-ZrO2 is studied at frequency of 2.45 GHz. Different conditions of input power, sample position and size are tested. For the first time, the experimentally known instability of microwave sintering is explained coupling the effective medium approximation and finite-element method. We show how the material dielectric permittivity imaginary part which increases with temperature and relative density encourages high hot spot phenomena. It is shown that the sample location has a great impact on the temperature distribution and decreasing the sample size promotes temperature homogenization thereby assisting the overall sintering stabilization.

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confidence: 99%

Inherent heating instability of direct microwave sintering process: Sample analysis for porous 3Y-ZrO2

2017

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“…Rendtorff et al 20 prepared the no cement castables (NCC) and ultralow-cement castables (ULCC) of castables with tabular alumina, alumina silica zirconia, and zirconia. The results showed good mechanical and fracture properties owing to the influence of zirconia.…”

Section: Introductionmentioning

confidence: 99%

“…The microstructures and textures of these castables were characterized, revealing microcracks in zirconia castables, an AZS matrix in alumina silica zirconia castables, and an alumina bond matrix in tabular alumina. [20][21][22][23][24][25]26 The synthesized mullite was used to make LCC castables and fired at different temperatures of up to 1500 • C. The HMOR and creep resistance were lower at 1500 • C owing to the formation of a liquid phase. The better performance of the castables resulted in the addition of alumina aggregates, fumed silica, calcium aluminate cement, and additives.…”

Section: Introductionmentioning

confidence: 99%

“…Rendtorff et al 20 . prepared the no cement castables (NCC) and ultralow‐cement castables (ULCC) of castables with tabular alumina, alumina silica zirconia, and zirconia.…”

Section: Introductionmentioning

confidence: 99%

“…The results showed good mechanical and fracture properties owing to the influence of zirconia. The microstructures and textures of these castables were characterized, revealing microcracks in zirconia castables, an AZS matrix in alumina silica zirconia castables, and an alumina bond matrix in tabular alumina 20–25,26 . The synthesized mullite was used to make LCC castables and fired at different temperatures of up to 1500°C.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Effect of zircon surface coating on alumina grog and its influences on the properties of low‐cement castables

Krishnan

Manikandan

Thenmuhil

2021

Int J Applied Ceramic Tech

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In this investigation, four types of low-cement castables (LCC) were prepared with sintered mullite, high alumina grog, unfired, and fired zircon coated on alumina grog. These castables were evaluated in terms of their physical, thermal, and thermomechanical properties. The castables prepared using sintered mullite showed good physical and thermal properties with higher TSR than castables with fired zircon coated on alumina grog due to higher mullite with lower anorthite phases. Fired zircon coated on alumina grog castables were superior with lower corrosion and higher TSR of castables to those of castables with unfired zircon coated on alumina grog and high alumina grog due to formation of zircon and zirconia phases and surface coated on alumina grog gave better corrosion resistance. Castables prepared using unfired zircon coated on alumina grog and high alumina grog showed poorer properties than the other castables due to formation of higher porosity of alumina grog.

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Rheology of refractory concrete: An article review

Bayoumi

Ewais

El‐Amir

2022

Boletín de la Sociedad Española de Cerámica y Vidrio

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Zirconia Reinforcement of Cement Free Alumina Refractory Castables by Two Routes

Cited by 7 publications

References 10 publications

Inherent heating instability of direct microwave sintering process: Sample analysis for porous 3Y-ZrO2

Inherent heating instability of direct microwave sintering process: Sample analysis for porous 3Y-ZrO2

Effect of zircon surface coating on alumina grog and its influences on the properties of low‐cement castables

Rheology of refractory concrete: An article review

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