Formation of NbB2/mullite composites by combustion synthesis involving metallothermic reduction of Nb2O5 and B2O3

Yeh, C.L.; Chou, Chia-Man

doi:10.1016/j.ceramint.2015.07.177

Cited by 3 publications

(2 citation statements)

References 25 publications

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“…Mullite is a stable solid solution in the Al 2 O 3 -SiO 2 system and refers to Al 4+2z Si 2−2z O 10−z with z varying between around 0.2 and 0.9 [28]. Formation of mullite was essentially due to dissolution of a small amount of Si into Al 2 O 3 during the SHS process [29,30]. The yield of Fe 3 Si as the only silicide phase under these two test conditions is justified by the fact that Fe 3 Si exists in a composition range from 10 to 25 at.% Si.…”

Section: Composition and Microstructure Of Synthesized Productsmentioning

confidence: 99%

Effects of Fe/Si Stoichiometry on Formation of Fe3Si/FeSi-Al2O3 Composites by Aluminothermic Combustion Synthesis

Yeh

Chen

Shieh

2021

Metals

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Aluminothermic combustion synthesis was conducted with Fe2O3–Al–Fe–Si reaction systems under Fe/Si stoichiometry from Fe-20 to Fe-50 at. % Si to investigate the formation Fe3Si/FeSi–Al2O3 composites. The solid-state combustion was sufficiently exothermic to sustain the overall reaction in the mode of self-propagating high-temperature synthesis (SHS). Dependence of iron silicide phases formed from SHS on Fe/Si stoichiometry was examined. Experimental evidence indicated that combustion exothermicity and flame-front velocity were affected by the Si percentage. According to the X-ray diffraction (XRD) analysis, Fe3Si–Al2O3 composites were synthesized from the reaction systems with Fe-20 and Fe-25 at.% Si. The increase of Si content led to the formation of both Fe3Si and FeSi in the final products of Fe-33.3 and Fe-40 at.% Si reaction systems, and the content of FeSi increased with Si percentage. Further increase of Si to Fe-50 at.% Si produced the FeSi–Al2O3 composite. Scanning electron microscopy (SEM) images revealed that the fracture surface morphology of the products featured micron-sized and nearly spherical Fe3Si and FeSi particles distributing over the dense and connecting substrate formed by Al2O3.

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Section: Composition and Microstructure Of Synthesized Productsmentioning

confidence: 99%

Effects of Fe/Si Stoichiometry on Formation of Fe3Si/FeSi-Al2O3 Composites by Aluminothermic Combustion Synthesis

Yeh

Chen

Shieh

2021

Metals

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“…Recently, Yeh and Kang reported the SHS of TiB 2 / mullite, TaB 2 /mullite, NbB 2 /mullite, TaB/TaB 2 /mullite composites [245][246][247][248]. These materials were composed of ultra-high temperature TiB 2 , TaB 2 , and NbB 2 ceramics and mullite (Al 4+2x Si 2-2x O 10-x , x = 0.2-0.9) phases and widely used in various high-temperature structural applications due to many favourable properties, such as: high melting point, high creep resistance, good thermal stability in harsh oxidising environments, good chemical resistance to alkalis and acids, high thermal shock resistance, low thermal expansion coefficient, etc.…”

Section: Oxide-based Composite Materialsmentioning

confidence: 99%

Self-propagating high-temperature synthesis of advanced materials and coatings

Левашов

Mukas'yan

Rogachev

et al. 2016

International Materials Reviews

319

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Self-propagating high-temperature synthesis (SHS) or combustion synthesis (CS) is a rapidly developing research area. SHS materials are being used in various fields, including mechanical and chemical engineering, medical and bioscience, aerospace and nuclear industries. The goal of the present paper is to provide a comprehensive state-of-the-art review and to analyse a critical mass of knowledge in the field of SHS materials and coatings. We also briefly discuss the history and scientific foundations of SHS along with an overview of the technological aspects for synthesis of different materials, including powders, ceramics, metal-ceramics, intermetallides, and composite materials. Application of CS in the field of surface engineering is also discussed focusing on two main routes for applying SHS to coating deposition: (i) single-step formation of the desired coatings and (ii) use of SHSderived powders, targets or electrodes in the coating deposition processes.

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Fabrication and characterization of alumina-based composites by in-situ combustion synthesis in Al-FeTiO3-B2O3-C alumino-thermic system

Hoseinpour,

Kalantar

2024

J Aust Ceram Soc

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Formation of NbB2/mullite composites by combustion synthesis involving metallothermic reduction of Nb2O5 and B2O3

Cited by 3 publications

References 25 publications

Effects of Fe/Si Stoichiometry on Formation of Fe3Si/FeSi-Al2O3 Composites by Aluminothermic Combustion Synthesis

Effects of Fe/Si Stoichiometry on Formation of Fe3Si/FeSi-Al2O3 Composites by Aluminothermic Combustion Synthesis

Self-propagating high-temperature synthesis of advanced materials and coatings

Fabrication and characterization of alumina-based composites by in-situ combustion synthesis in Al-FeTiO3-B2O3-C alumino-thermic system

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