Thermomechanical and thermophysical characteristics of alumina-carbon monolithic refractory containing surface-modified graphites in matrix

Mukhopadhyay, Sibabrata; Das, Sumita; Moitra, Shubhrajyoti

doi:10.1016/j.ceramint.2018.02.207

Cited by 10 publications

(3 citation statements)

References 45 publications

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“…To overcome the disadvantages of graphite, the surfactant method [10,11], the coating method [12][13][14] and other methods [15][16][17] have been applied to the surface modification of graphite. The surface modification technology is dedicated to the use of surfactants or preparation of hydrophilic coatings on the surface of graphite, as the solution to the poor dispersibility of graphite in the castables, in order to improve the water demand, oxidation resistance, and corrosion resistance of carbon-containing castables.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of in-situ high-content carbon-containing calcium aluminate cement and its effect on the properties of Al₂O₃-SiC-C castables

Zang

Xiao

Ding

et al. 2021

Journal of Asian Ceramic Societies

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The in-situ high-content carbon-containing calcium aluminate cement (HCCAC) with the carbon content of 20.1 wt.% was prepared by the soft chemistry method with citric acid, calcium carbonate, and alumina as raw materials. The cement product was characterized by X-ray diffractometry, scanning electron microscopy, and Raman spectroscopy. In HCCAC, platelike and fibrous carbon formed by the pyrolysis of organic acids were uniformly embedded between the calcium aluminate grains. Moreover, the carbon floating ratio of HCCAC in water was lower than that of the mechanical mixing powder of calcium aluminate cement (CAC) and carbon black, which indicated that the water dispersion of carbon was improved. Besides, the slag corrosion resistance properties of Al 2 O 3 -SiC-C castables bonded with HCCAC and CAC respectively were compared, and the results showed that the corrosion resistance depth of the HCCAC bonded castables was 45% lower than that of the CAC bonded castables. Therefore, HCCCA can be used as a novel binder of carbon-containing refractory castables.

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Section: Introductionmentioning

confidence: 99%

Synthesis of in-situ high-content carbon-containing calcium aluminate cement and its effect on the properties of Al₂O₃-SiC-C castables

Zang

Xiao

Ding

et al. 2021

Journal of Asian Ceramic Societies

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“…Bag et al [13] studied the effect of graphite content on the refractory of MgO-C. When the content of graphite was 3%, the refractory of MgO-C was better than that of traditional MgO-C. Mukhopadhyay et al [14] found that the physicochemistry property of the refractory containing graphite was superior to that of the refractory without graphite. Akhlaghi et al [15] provided aluminium alloy-graphite composites by in situ powder metallurgy.…”

Section: Introductionmentioning

confidence: 99%

Intermolecular hydrogen bond ruptured by graphite with different lamellar number

Zhang

Zhao

et al. 2021

R. Soc. open sci.

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Intermolecular hydrogen bonds are formed through the electrostatic attraction between the hydrogen nucleus on a strong polar bond and high electronegative atom with an unshared pair of electrons and a partial negative charge. It affects the physical and chemical properties of substances. Based on this, we presented a physical method to modulate intermolecular hydrogen bonds for not changing the physical–chemical properties of materials. The graphite and graphene are added into the glycerol, respectively, by being used as a viscosity reducer in this paper. The samples are characterized by Raman and 1H-nuclear magnetic resonance. Results show that intermolecular hydrogen bonds are adjusted by graphite or graphene. The rheology of glycerol is reduced to varying degrees. Transmission electron microscopes and computer simulation show that the spatial limiting action of graphite or graphene is the main cause of breaking the intermolecular hydrogen bond network structure. We hope this work reveals the potential interplay between nanomaterials and hydroxyl liquids, which will contribute to the field of solid–liquid coupling lubrication.

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“…Carbon containing refractories (CCRs) have been widely used in steel ladles, electric arc furnaces, and basic oxygen furnaces, benefiting from their high resistance to corrosion, slag penetration, and thermal shock . Traditional carbon containing refractories suffered several drawbacks, such as, high thermal conductivity, energy wastage, and higher carbon picking‐up in steel, because of their high content of carbon (8‐30 wt%).…”

Section: Introductionmentioning

confidence: 99%

Combustion synthesis of C/MgAl₂O₄ composite powders using magnesium oxalate as carbon source

Xiao

Ding

et al. 2018

Int J Applied Ceramic Tech

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In order to solve the bottleneck problems including uniform distribution, and oxidation resistance of nano carbons in oxide ceramics, C/MgAl2O4 composite powders were prepared with MgC2O4·2H2O, MgO2, Al2O3, and Al as raw materials via combustion method under argon atmosphere. The maximum adding amount of MgC2O4·2H2O is 34.34 wt%. The phase compositions and microstructures of combustion products were characterized through X‐ray diffraction (XRD), scanning electron microscope (SEM)/EDX, and Raman spectroscopy. The results showed that the phases of products are mainly composed of MgAl2O4 and carbon. The prepared MgAl2O4 has granular and rod‐like morphologies, and the free carbon (1.172 wt%) exists between particles of MgAl2O4. Moreover, the addition of FeC2O4 as catalyst in raw materials ratio would be beneficial for improving crystallization of in situ carbon generated in the products. The oxidation activation energy of the prepared C/MgAl2O4 composite powders was calculated as 143.01 kJ/mol which was 22.17% higher than that of carbon black/MgAl2O4 powders (117.06 kJ/mol), suggesting that the C/MgAl2O4 composite powders prepared by combustion synthesis have excellent oxidation resistance.

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Thermomechanical and thermophysical characteristics of alumina-carbon monolithic refractory containing surface-modified graphites in matrix

Cited by 10 publications

References 45 publications

Synthesis of in-situ high-content carbon-containing calcium aluminate cement and its effect on the properties of Al₂O₃-SiC-C castables

Synthesis of in-situ high-content carbon-containing calcium aluminate cement and its effect on the properties of Al₂O₃-SiC-C castables

Intermolecular hydrogen bond ruptured by graphite with different lamellar number

Combustion synthesis of C/MgAl₂O₄ composite powders using magnesium oxalate as carbon source

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Thermomechanical and thermophysical characteristics of alumina-carbon monolithic refractory containing surface-modified graphites in matrix

Cited by 10 publications

References 45 publications

Synthesis of in-situ high-content carbon-containing calcium aluminate cement and its effect on the properties of Al2O3-SiC-C castables

Synthesis of in-situ high-content carbon-containing calcium aluminate cement and its effect on the properties of Al2O3-SiC-C castables

Intermolecular hydrogen bond ruptured by graphite with different lamellar number

Combustion synthesis of C/MgAl2O4 composite powders using magnesium oxalate as carbon source

Contact Info

Product

Resources

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Synthesis of in-situ high-content carbon-containing calcium aluminate cement and its effect on the properties of Al₂O₃-SiC-C castables

Synthesis of in-situ high-content carbon-containing calcium aluminate cement and its effect on the properties of Al₂O₃-SiC-C castables

Combustion synthesis of C/MgAl₂O₄ composite powders using magnesium oxalate as carbon source