Fabrication of Microporous Corundum-Spinel Refractory Castables by Foam-Gelcasting Methods

Chen, Huan; Liang, Feng; Fang, Wei; Chen, Hui; Du, Xing; Wang, Fucheng; Zhao, Liancheng

doi:10.1007/s11665-015-1566-2

Cited by 10 publications

(3 citation statements)

References 19 publications

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“…At present, the main preparation methods of porous spinel ceramics include foam-gelcasting route [21][22][23][24][25][26], template method [27][28][29], in-situ decomposition poreforming (ISDP) technique [20,[30][31][32][33][34], etc. For instance, Deng et al [35] prepared the porous spinel foam ceramics with average pore size of 124-266 µm via foamgelcasting route using spinel powders, but the pore sizes of these porous spinel ceramics were large and the pore distributions were inhomogeneous.…”

Section: Introductionmentioning

confidence: 99%

Effect of Al(Oh)3 particle size on microstructures and strengths of porous MgAl2O4 ceramics

Zhi¹,

Chen²,

Yan³

et al. 2020

PAC

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Porous MgAl 2 O 4 ceramics were prepared via in-situ decomposition pore-forming (ISDP) technique using Al(OH) 3 and magnesite as raw materials. The influence of Al(OH) 3 particle size (0-44 µm, 44-88 µm, 88-100 µm, 100-150 µm) on the microstructures and strengths of porous spinel ceramics were investigated by means of X-ray diffraction (XRD), scanning electron microscopy (SEM) and energy dispersive spectrometer (EDS). The bimodal distributions were observed among all the pore size distributions of the porous spinel ceramics. The small pores existed inside the particles and the big pores existed between the particles. When the Al(OH) 3 particle size decreased from 100-150 µm to 0-44 µm, the peak of large pores shifted towards left while intensity of the peak of small pores decreased. Simultaneously, the neck-bonds formed between particles grew significantly, which resulted in the increase of compressive strength from 1.4 to 10.8 MPa. The optimized product is the sample with the Al(OH) 3 particle size of 0-44 µm, which has a high apparent porosity (55.2%), a high compressive strength (10.8 MPa) and a relatively homogeneous pore size distribution.

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Section: Introductionmentioning

confidence: 99%

Effect of Al(Oh)3 particle size on microstructures and strengths of porous MgAl2O4 ceramics

Zhi¹,

Chen²,

Yan³

et al. 2020

PAC

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“…[ 1–3 ] Latent heat storage, sensible heat storage, and thermochemical storage are the three main classifications of thermal energy storage methods. [ 4 ] Among them, latent heat storage holds significant importance as an efficient approach to store energy. [ 5,6 ] Phase change materials (PCMs) are employed as energy storage media in latent heat storage, which have the ability to store and release heat as they undergo a phase change process.…”

Section: Introductionmentioning

confidence: 99%

Preparation and Thermal Performances of Lauric Acid/Polyvinyl Butyral/Graphene Nanoplates Composite Phase Change Materials

Wang,

Fu,

Fang

2024

Physica Status Solidi (a)

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In recent years, there has been significant progress in the development and application of phase change materials (PCMs) for thermal energy storage. The new lauric acid (LA)/polyvinyl butyral (PVB)/graphene nanoplates (GNP) composite phase change materials (CPCM) are prepared using the solution blending method, in which LA acts as PCM, PVB serves as support material, and GNP is used as thermally conductive enhancer. The prepared CPCM with 80 wt% LA can retain stable shape without leakage. The Fourier‐transform infrared and X‐ray diffractometer results indicate that there is no chemical reaction among the various components of the CPCM. The differential scanning calorimeter results show the CPCM3 (with 80 wt% LA and 5 wt% GNP) has melting latent heat of 134.41 KJ Kg−1 with melting temperature of 41.73 °C. The thermal conductivity tests present that thermal conductivity of CPCM3 is 0.689 W (m K)−1, which is 3.83 times that of the PCM2. The thermogravimetric analyzer results verify that the CPCM possess good thermal stability within the operating temperature range of 35–45 °C without any degradation. The thermal cycling tests indicate that CPCM have good thermal reliability. Therefore, it has promising applications in building energy conservation, solar thermal systems, thermal management, and textiles.

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“…Porous magnesium aluminate spinel (MgAl2O4) is one of the refractory ceramics widely used as gas filters, catalytic supports, and separation membranes because of their high melting point (2135°C), high specific surface area, high thermal shock resistance, relatively low thermal conductivity and thermal expansion coefficient, and good chemical inertness [5][6].…”

Section: Introductionmentioning

confidence: 99%

Alümina ve Magnezyanın Reaksiyon Sinterlenmesinde Nişasta İlavesinin Gözeneklilik Üzerindeki Etkisi

Özçatal¹,

Başpınar²,

Çiftçi³

2021

JCHAR

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Porous magnesium aluminate ceramics were produced with a sintering process of α-Al2O3 and MgO. Up to 20% by weight of corn starch were used as a pore-forming agent. Pellets were prepared by powder metallurgy technique and produced by solid-state sintering route. The porosity of the sintered pellets was characterized with and without adding corn starch, respectively. In particular, the effects of corn starch additive on density, porosity, and microstructure were investigated. Almost full density was obtained in the samples without starch addition. The study results showed that corn starch addition increased the porosity of the sintered samples. Maximum porosity of 47.86 % was achieved with the addition of 20 wt. % corn starch of 1400°C sintering temperature.

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Fabrication of Microporous Corundum-Spinel Refractory Castables by Foam-Gelcasting Methods

Cited by 10 publications

References 19 publications

Effect of Al(Oh)3 particle size on microstructures and strengths of porous MgAl2O4 ceramics

Effect of Al(Oh)3 particle size on microstructures and strengths of porous MgAl2O4 ceramics

Preparation and Thermal Performances of Lauric Acid/Polyvinyl Butyral/Graphene Nanoplates Composite Phase Change Materials

Alümina ve Magnezyanın Reaksiyon Sinterlenmesinde Nişasta İlavesinin Gözeneklilik Üzerindeki Etkisi

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