Combustion synthesis of B4C–TiB2 composite nanoparticle by Self-Propagating High-Temperature Synthesis (SHS) in B2O3–TiO2–Mg–C system

In this study, B4C-TiB2 nanocomposite powder was synthesized from oxide raw materials with the principle of magnesiothermic reduction in B2O3–TiO2–Mg–C system by SHS method. For the SHS process, Mg and C stoichiometries were optimized with thermochemical simulation, and composite charge stoichiometr...

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Bibliographic Details
Main Authors: Çoban, Ozan, Buğdaycı, Mehmet, Başlayıcı, Serkan, Açma, Mahmut Ercan
Format: Conference Object
Language:English
Published: Springer Science and Business Media Deutschland GmbH 2023
Subjects:
Advanced Ceramics
Boron Carbide
Composite Powder
Nanoparticle Synthesis
Titanium Diboride
Carbonic acid
Online Access:https://hdl.handle.net/20.500.12511/10839
https://doi.org/10.1007/978-3-031-22622-9_16
Description
Summary:In this study, B4C-TiB2 nanocomposite powder was synthesized from oxide raw materials with the principle of magnesiothermic reduction in B2O3–TiO2–Mg–C system by SHS method. For the SHS process, Mg and C stoichiometries were optimized with thermochemical simulation, and composite charge stoichiometry and Mg particle size were optimized with XRD, BET and SEM analyzes. Optimization of acid concentration, leaching temperature, and leaching time parameters has been provided for the HCl leaching processes carried out to remove undesired by-products after SHS. In addition, pH and temperature changes during leaching were analyzed and an innovative application of modified leaching with H2O2 and carbonic acid addition was investigated. The results showed that by optimizing the process steps for the synthesis of B4C–TiB2 composite nanoparticle by the SHS method, a commercial grade product with a surface area of 30.6 m2/g, and a particle size of 193 nm was obtained.

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