Discrete One-Stage Mechanochemical Synthesis of Titanium-Nitride in a High-Energy Mill

Discrete (discontinuous) mechanochemical synthesis of titanium nitride was experimentally investigated. The experimental results show that mechanical activation intensifies the chemical conversion in the Ti-N system, and the discrete synthesis of the final product is conducted under “soft” controlle...

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Autores principales:	Oleg Lapshin, Olga Shkoda, Oksana Ivanova, Sergey Zelepugin
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	high-energy mill mechanical activation titanium nitride mechanochemical synthesis experiment mathematical model Mining engineering. Metallurgy TN1-997
Acceso en línea:	https://doaj.org/article/7a4da3e290774721a6e67a3b928ad615
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spelling	oai:doaj.org-article:7a4da3e290774721a6e67a3b928ad6152021-11-25T18:21:37ZDiscrete One-Stage Mechanochemical Synthesis of Titanium-Nitride in a High-Energy Mill10.3390/met111117432075-4701https://doaj.org/article/7a4da3e290774721a6e67a3b928ad6152021-10-01T00:00:00Zhttps://www.mdpi.com/2075-4701/11/11/1743https://doaj.org/toc/2075-4701Discrete (discontinuous) mechanochemical synthesis of titanium nitride was experimentally investigated. The experimental results show that mechanical activation intensifies the chemical conversion in the Ti-N system, and the discrete synthesis of the final product is conducted under “soft” controlled conditions without high heat release. The new theory of mechanochemical synthesis and the mathematical model based on it were used for theoretical evaluation of the dynamics of titanium activation in the nitrogen medium. It was found that the discrete mode of synthesis includes two factors accelerating mechanochemical reactions in the Ti-N synthesis: structural (grinding of metallic reagent and formation of interfacial areas) and kinetic (accumulation of excess energy stored in the formed structural defects in metallic reagent). The kinetic constants of the process were found using experimental data and the inverse problem method. The diagrams defining the controlled modes of obtaining titanium nitride particles with the given characteristics were constructed. A mathematical model for theoretical estimation of the dynamics of activation of titanium powder in the nitrogen medium was developed using a new macrokinetic theory of mechanochemical synthesis.Oleg LapshinOlga ShkodaOksana IvanovaSergey ZelepuginMDPI AGarticlehigh-energy millmechanical activationtitanium nitridemechanochemical synthesisexperimentmathematical modelMining engineering. MetallurgyTN1-997ENMetals, Vol 11, Iss 1743, p 1743 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	high-energy mill mechanical activation titanium nitride mechanochemical synthesis experiment mathematical model Mining engineering. Metallurgy TN1-997
spellingShingle	high-energy mill mechanical activation titanium nitride mechanochemical synthesis experiment mathematical model Mining engineering. Metallurgy TN1-997 Oleg Lapshin Olga Shkoda Oksana Ivanova Sergey Zelepugin Discrete One-Stage Mechanochemical Synthesis of Titanium-Nitride in a High-Energy Mill
description	Discrete (discontinuous) mechanochemical synthesis of titanium nitride was experimentally investigated. The experimental results show that mechanical activation intensifies the chemical conversion in the Ti-N system, and the discrete synthesis of the final product is conducted under “soft” controlled conditions without high heat release. The new theory of mechanochemical synthesis and the mathematical model based on it were used for theoretical evaluation of the dynamics of titanium activation in the nitrogen medium. It was found that the discrete mode of synthesis includes two factors accelerating mechanochemical reactions in the Ti-N synthesis: structural (grinding of metallic reagent and formation of interfacial areas) and kinetic (accumulation of excess energy stored in the formed structural defects in metallic reagent). The kinetic constants of the process were found using experimental data and the inverse problem method. The diagrams defining the controlled modes of obtaining titanium nitride particles with the given characteristics were constructed. A mathematical model for theoretical estimation of the dynamics of activation of titanium powder in the nitrogen medium was developed using a new macrokinetic theory of mechanochemical synthesis.
format	article
author	Oleg Lapshin Olga Shkoda Oksana Ivanova Sergey Zelepugin
author_facet	Oleg Lapshin Olga Shkoda Oksana Ivanova Sergey Zelepugin
author_sort	Oleg Lapshin
title	Discrete One-Stage Mechanochemical Synthesis of Titanium-Nitride in a High-Energy Mill
title_short	Discrete One-Stage Mechanochemical Synthesis of Titanium-Nitride in a High-Energy Mill
title_full	Discrete One-Stage Mechanochemical Synthesis of Titanium-Nitride in a High-Energy Mill
title_fullStr	Discrete One-Stage Mechanochemical Synthesis of Titanium-Nitride in a High-Energy Mill
title_full_unstemmed	Discrete One-Stage Mechanochemical Synthesis of Titanium-Nitride in a High-Energy Mill
title_sort	discrete one-stage mechanochemical synthesis of titanium-nitride in a high-energy mill
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/7a4da3e290774721a6e67a3b928ad615
work_keys_str_mv	AT oleglapshin discreteonestagemechanochemicalsynthesisoftitaniumnitrideinahighenergymill AT olgashkoda discreteonestagemechanochemicalsynthesisoftitaniumnitrideinahighenergymill AT oksanaivanova discreteonestagemechanochemicalsynthesisoftitaniumnitrideinahighenergymill AT sergeyzelepugin discreteonestagemechanochemicalsynthesisoftitaniumnitrideinahighenergymill
_version_	1718411267295674368

Discrete One-Stage Mechanochemical Synthesis of Titanium-Nitride in a High-Energy Mill

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