Optimized mechanical properties and oxidation resistance of low carbon Al2O3-C refractories through Ti3AlC2 addition

Liu, Gengfu; Liao, Ning; Nath, Mithun; Sang, Shaobai

doi:10.1016/j.jeurceramsoc.2020.11.038

Cited by 39 publications

(16 citation statements)

References 30 publications

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“…Finally, we compared the present work to several researches about other dense Al 2 O 3 -C refractories, 7,15,20,22,24,30 as given in Table 1. We can find that the lightweight Al 2 O 3 -C refractories showed a higher CMOR of 26.7 MPa due to the introduction of aggregate-M and combined one-dimensional ceramic phases.…”

Section: Discussionmentioning

confidence: 99%

“…An illustration of the aggregate-T and aggregate-M to compare their microstructures is given in Figure 1. The microstructures and properties of the aggregate-M were described thoroughly in Chen et al 41,44,45 Specifically, compared with dense corundum aggregates in conventional Al 2 O 3 -C refractories [20][21][22][23][24][25][26] and other microporous corundum aggregates, [47][48] the aggregate-M had a higher apparent porosity of 25.7 % and contained more micropores. The median pore size of the aggregate-M was 4.2 μm.…”

Section: Preparation Of the Lightweight Al 2 O 3 -C Refractoriesmentioning

confidence: 99%

“…[12][13][14][15][16][17] Recent researches demonstrated that the ceramic reinforcement phases of carbon containing refractories play a major role in the enhancement of mechanical properties. [18][19][20][21][22] One of the best-known methods to increase the strength of the matrix of Al 2 O 3 -C refractories is the in situ formation of SiC whiskers by adding metallic Si powder. [23][24][25][26][27] For example, Al 2 O 3 -C refractories containing ultrafine microcrystalline graphite fostered the formation of intertwined SiC whiskers, which caused a significantly higher strength.…”

Section: Introductionmentioning

confidence: 99%

“…Recent researches demonstrated that the ceramic reinforcement phases of carbon containing refractories play a major role in the enhancement of mechanical properties 18–22 . One of the best‐known methods to increase the strength of the matrix of Al 2 O 3 ‐C refractories is the in situ formation of SiC whiskers by adding metallic Si powder 23–27 .…”

Section: Introductionmentioning

confidence: 99%

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Enhanced mechanical properties of lightweight Al₂O₃‐C refractories reinforced by combined one‐dimensional ceramic phases

Chen

Yan

Schafföner

et al. 2021

Int J Applied Ceramic Tech

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We prepared a new lightweight Al2O3‐C refractory material with a higher strength by using microporous corundum aggregates instead of dense tabular corundum aggregates, which was reinforced by in situ formed SiC whiskers, multi‐walled carbon nanotubes (MWCNTs), and mullite rods. A comparative study of the microstructure, mechanical properties, and fracture behavior was carried out for dense and lightweight Al2O3‐C refractories coked at 1200°C and 1400°C, respectively. By using the microporous corundum aggregates, a better aggregate/matrix interface bonding and an optimized distribution of SiC whiskers were obtained. The SiC whiskers formed inside the microporous corundum aggregates and simultaneously in the matrix by a vapor‐solid reaction mechanism, resulting in an enhancement at the microporous aggregate/matrix interface. Furthermore, the in situ formed MWCNTs and well‐developed mullite rods at 1200°C in the matrix also contributed to the better interface structure. Thus, due to the improved microporous aggregate/matrix interface, the crack propagation along the aggregate/matrix interface was suppressed, resulting in an increased crack propagation within the aggregates. Consequently, the synergy between microporous corundum aggregates and combined one‐dimensional ceramic phases caused a lower bulk density but a markedly higher strength, a higher fracture energy, and a higher toughness of lightweight Al2O3‐C refractories compared to the dense ones. Overall, our study allows to overcome the traditional concept that a higher strength of refractories is reached by a higher density.

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Section: Discussionmentioning

confidence: 99%

Section: Preparation Of the Lightweight Al 2 O 3 -C Refractoriesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Enhanced mechanical properties of lightweight Al₂O₃‐C refractories reinforced by combined one‐dimensional ceramic phases

Chen

Yan

Schafföner

et al. 2021

Int J Applied Ceramic Tech

Self Cite

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“…It is most commonly used for process control [16]. Practical work experience and scientific analysis show that the control algorithm has excellent improvements and capabilities for a large number of enterprise objects, and can achieve the required control function indicators [17]. Based on the actual work of this example, PID control can be used to detect the addition of carbon raw materials.…”

Section: Carbon Raw Materialsmentioning

confidence: 99%

Carbon Raw Materials on the Properties of Al2O3-SiC-C Iron Trough Casting Building Materials

2022

IJETC

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A large number of studies have shown that the addition of carbon raw materials will have a great impact on the fluidity and construction performance of calcium aluminate cement (CAC) combined with castables. In order to explore the impact of carbon raw materials on performance when used in iron ditch castables, this paper uses site measurement, experimental equipment collection and result subdivision methods to collect data, streamline the algorithm and use the algorithm to better clarify the influencing factors. And design a theoretical result that can cover its influencing factors. Through microscopic inspection, the X-ray diffraction (XRD) images of the two sets of samples with 0.8% and 6.8% carbon content after heat treatment at 1050°C and 1500°C were studied. The results showed that the X-ray diffraction (XRD) images with 0.8% carbon content were compared with carbon. The main crystalline phases of the W group samples with a content of 6.8% are corundum and SiC. After heat treatment at 1500℃, the sample with 6.8% carbon content has a higher main peak of SiC than the sample with 0.8% carbon content. , Indicating that as the carbon content increases, more SiC is formed in the sample. Further exploring the high-temperature flexural strength of the sample after heat treatment at 1500℃, we can find that when the carbon addition is 4.7%, the high-temperature flexural strength of the sample has a maximum value of 2.8MPa. With the increase of the carbon addition, the sample the high temperature flexural strength has been improved. It has basically realized the combination of theory and practice, and obtained the available research results. baked before tapping. The strength is not high, the service life is short, and the number of trench repairs affects the production efficiency.-quality castables have the characteristics of high strength, good thermal shock stability, excellent wear resistance and corrosion resistance. Compared with traditional ASC ramming materials, the service life and iron capacity are greatly improved.However, with the development of modern iron product technology and technological innovation, the use of -type casting materials has become more complex, requiring not only corrosion resistance at high temperatures, but also separation analysis and peeling caused by reactions. At the same time, environmental protection problems have also been solved, and the requirements for the use and efficiency of stainless steel materials are getting higher and higher. Therefore, extending the service life of stainless steel materials, increasing the strength of metals, and reducing maintenance losses and repair times are important issues that need to be explored and identified in actual production. The combination and addition of carbon raw materials is a good research guide for solving the functional changes of building materials and improving current problems.The research on carbon raw materials is now quite mature, and the related research on the performance of iron ditch pouring building materials has als...

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Functional Tailoring of Multi‐Dimensional Pure MXene Nanostructures for Significantly Accelerated Electromagnetic Wave Absorption

Zeng

Zhao

Xiao

et al. 2023

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Transition metal carbide (Ti3C2Tx MXene), with a large specific surface area and abundant surface functional groups, is a promising candidate in the family of electromagnetic wave (EMW) absorption. However, the high conductivity of MXene limits its EMW absorption ability, so it remains a challenge to obtain outstanding EMW attenuation ability in pure MXene. Herein, by integrating HF etching, KOH shearing, and high‐temperature molten salt strategies, layered MXene (L‐MXene), network‐like MXene nanoribbons (N‐MXene NRs), porous MXene monolayer (P‐MXene ML), and porous MXene layer (P‐MXene L) are rationally constructed with favorable microstructures and surface states for EMW absorption. HF, KOH, and KCl/LiCl are used to functionalize MXene to tune its microstructure and surface state (F−, OH−, and Cl− terminals), thereby improving the EMW absorption capacity of MXene‐based nanostructures. Impressively, with the unique structure, proper electrical conductivity, large specific surface area, and abundant porous defects, MXene‐based nanostructures achieve good impedance matching, dipole polarization, and conduction loss, thus inheriting excellent EMW absorption performance. Consequently, L‐MXene, N‐MXene NRs, P‐MXene ML, and P‐MXene L enable a reflection loss (RL) value of −43.14, −63.01, −60.45, and −56.50 dB with a matching thickness of 0.95, 1.51, 3.83, and 4.65 mm, respectively.

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Optimized mechanical properties and oxidation resistance of low carbon Al2O3-C refractories through Ti3AlC2 addition

Cited by 39 publications

References 30 publications

Enhanced mechanical properties of lightweight Al₂O₃‐C refractories reinforced by combined one‐dimensional ceramic phases

Enhanced mechanical properties of lightweight Al₂O₃‐C refractories reinforced by combined one‐dimensional ceramic phases

Carbon Raw Materials on the Properties of Al2O3-SiC-C Iron Trough Casting Building Materials

Functional Tailoring of Multi‐Dimensional Pure MXene Nanostructures for Significantly Accelerated Electromagnetic Wave Absorption

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Optimized mechanical properties and oxidation resistance of low carbon Al2O3-C refractories through Ti3AlC2 addition

Cited by 39 publications

References 30 publications

Enhanced mechanical properties of lightweight Al2O3‐C refractories reinforced by combined one‐dimensional ceramic phases

Enhanced mechanical properties of lightweight Al2O3‐C refractories reinforced by combined one‐dimensional ceramic phases

Carbon Raw Materials on the Properties of Al2O3-SiC-C Iron Trough Casting Building Materials

Functional Tailoring of Multi‐Dimensional Pure MXene Nanostructures for Significantly Accelerated Electromagnetic Wave Absorption

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Enhanced mechanical properties of lightweight Al₂O₃‐C refractories reinforced by combined one‐dimensional ceramic phases

Enhanced mechanical properties of lightweight Al₂O₃‐C refractories reinforced by combined one‐dimensional ceramic phases