Oxidation behavior and kinetics of Al 2 O 3 -SiC-SiO 2 -C refractories in CO 2 atmosphere

Zuo, Haibin; Wang, Cong

doi:10.1016/j.ceramint.2016.06.105

Cited by 8 publications

(3 citation statements)

References 20 publications

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“…The graphitic carbon and silicon carbide in carbon brick and CCB can be oxidized in the presence of air and water vapor at temperatures above 500 °C. [75][76][77] To improve the oxidation resistance of carbon brick, some additives such as silicon, aluminum, and silicon carbide are typically added. However, the influence of these additives on the oxidation resistance of carbon brick is limited owing to the high carbon content.…”

Section: Damage Caused By Oxidation Of Refractory Materialsmentioning

confidence: 99%

Erosion Behavior and Longevity Technologies of Refractory Linings in Blast Furnaces for Ironmaking: A Review

Cui

Wang

et al. 2022

steel research int.

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Erosion of the refractory materials in blast furnaces (BFs) greatly limits their campaign life, which seriously reduces the economic benefits of iron and steel plants and endangers workers. Therefore, it is important to detect and monitor the erosion process of refractory materials in the BF hearth. In this review, the mechanisms of physical damage, chemical corrosion, and mechanical erosion of BF hearths during BF operation are analyzed and summarized. In addition, the effects of hearth structure, refractory type, and protective layer on hearth erosion behavior and hearth life are analyzed and discussed. Some longevity technologies of BF hearths are analyzed and compared, such as reasonable hearth structure design, refractory selection, and technologies to form protective layers. Finally, some suggestions and prospects for the future development of long campaign life BF hearths are discussed.

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Section: Damage Caused By Oxidation Of Refractory Materialsmentioning

confidence: 99%

Erosion Behavior and Longevity Technologies of Refractory Linings in Blast Furnaces for Ironmaking: A Review

Cui

Wang

et al. 2022

steel research int.

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“…Due to the high thermal conductivity and low thermal expansion, carbon brick becomes one of the most important refractories for modern blast furnace hearth [6]. Researchers have carried out relevant research on the physical damage of hearth carbon bricks caused by mechanical scouring and static corrosion of hightemperature molten iron and slag [7,8], the chemical corrosion [9,10], thermal stress [11][12][13][14] caused by temperature gradient, infiltration of molten iron, alkali metals and zinc, and the oxidation corrosion of carbon bricks under different gas conditions [2,[15][16][17]. However, there are few studies on the oxidation resistance of carbon bricks for hearth under water vapour conditions [18,19].…”

Section: Introductionmentioning

confidence: 99%

Effect of water vapour on the interface reaction between carbon brick and molten iron in blast furnace hearth

Chen-kun

Zhang

Zhongping³

et al. 2023

Ironmaking & Steelmaking

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In the production process of blast furnace, the damage of cooler and tuyere sleeve and some operation problems often lead to ponding in the hearth. Steam will not only oxidize carbon bricks, but also lead to the falling off of solidification layer, which poses a great threat to the longevity of the hearth. By studying the influence of water vapour content change, the influence mechanism of water vapour on the interface between carbon brick and molten iron in blast furnace hearth is revealed. The results show that the entry of water vapour will isolate the molten iron and carbon brick, and oxidize in contact with the carbon brick, increase the ceramic phase, dissolve into the molten iron, destroy the carbon brick structure at the iron carbon interface, produce spalling, accelerate the destruction and falling off of the solidification layer, so as to reduce the service life of the blast furnace.

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“…[24][25][26][27][28][29][30][31][32] Moreover, it was found that Ca 2 Al 2 SiO 7 has a very good self-forming ability of pores during sintering process, 33 and the rough and porous surface has important effect on cell behavior and tissue regeneration. [34][35][36][37] In addition, during the heat treatment of SiC-containing ceramics, CO gas bubbles resulted from the oxidation of SiC also favored the formation of porous SiO 2 [38][39][40] and the final porous Ca 2 Al 2 SiO 7 coating. 21 Some recent studies also confirmed that both bioactive ions and surface topography have synergistic effect on osteogenic differentiation and tissue regeneration.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of porous gehlenite coating on Al₂O₃–ZrO₂–SiC composite ceramics and its in vitro biological activities

Chen

et al. 2022

J Biomater Appl

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Porous gehlenite coatings on Al2O3–ZrO2–SiC composite ceramics were prepared by electro-spraying technique combined with reactive sintering method. The influences of gehlenite coating on the mechanical property of the ceramics and biological activity of the coating were investigated. The results indicated that the gehlenite coating has limited influences on flexural strength and fracture toughness of the ceramics, and the coating has elastic modulus of 82 GPa, hardness of 2.2 GPa, and adhesive strength of 1512 mN, suggesting its potential application in load-bearing ceramic implants. Simulated body fluid soaking test, CCK-8 and alkaline phosphatase activity assay demonstrated that the porous gehlenite coating has strong mineralization ability, which promotes proliferation and differentiation of MC3T3-E1 cells. These excellent biological performances can be attributed to the synergistic effect of the porous surface of the coating and its release of Ca2+ and Si4+.

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Oxidation behavior and kinetics of Al 2 O 3 -SiC-SiO 2 -C refractories in CO 2 atmosphere

Cited by 8 publications

References 20 publications

Erosion Behavior and Longevity Technologies of Refractory Linings in Blast Furnaces for Ironmaking: A Review

Erosion Behavior and Longevity Technologies of Refractory Linings in Blast Furnaces for Ironmaking: A Review

Effect of water vapour on the interface reaction between carbon brick and molten iron in blast furnace hearth

Fabrication of porous gehlenite coating on Al₂O₃–ZrO₂–SiC composite ceramics and its in vitro biological activities

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Oxidation behavior and kinetics of Al 2 O 3 -SiC-SiO 2 -C refractories in CO 2 atmosphere

Cited by 8 publications

References 20 publications

Erosion Behavior and Longevity Technologies of Refractory Linings in Blast Furnaces for Ironmaking: A Review

Erosion Behavior and Longevity Technologies of Refractory Linings in Blast Furnaces for Ironmaking: A Review

Effect of water vapour on the interface reaction between carbon brick and molten iron in blast furnace hearth

Fabrication of porous gehlenite coating on Al2O3–ZrO2–SiC composite ceramics and its in vitro biological activities

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Product

Resources

About

Fabrication of porous gehlenite coating on Al₂O₃–ZrO₂–SiC composite ceramics and its in vitro biological activities