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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MDPI AG
2021-10-01
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| Series: | Metals |
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| Online Access: | https://www.mdpi.com/2075-4701/11/11/1743 |
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| author | Oleg Lapshin Olga Shkoda Oksana Ivanova Sergey Zelepugin |
| author_facet | Oleg Lapshin Olga Shkoda Oksana Ivanova Sergey Zelepugin |
| author_sort | Oleg Lapshin |
| collection | DOAJ |
| 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. |
| first_indexed | 2024-03-10T05:16:50Z |
| format | Article |
| id | doaj.art-7a4da3e290774721a6e67a3b928ad615 |
| institution | Directory Open Access Journal |
| issn | 2075-4701 |
| language | English |
| last_indexed | 2024-03-10T05:16:50Z |
| publishDate | 2021-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Metals |
| spelling | doaj.art-7a4da3e290774721a6e67a3b928ad6152023-11-23T00:22:54ZengMDPI AGMetals2075-47012021-10-011111174310.3390/met11111743Discrete One-Stage Mechanochemical Synthesis of Titanium-Nitride in a High-Energy MillOleg Lapshin0Olga Shkoda1Oksana Ivanova2Sergey Zelepugin3Tomsk Scientific Center of the Siberian Branch of the Russian Academy of Sciences, 10/4 Akademicheskii Pr., 634055 Tomsk, RussiaTomsk Scientific Center of the Siberian Branch of the Russian Academy of Sciences, 10/4 Akademicheskii Pr., 634055 Tomsk, RussiaTomsk Scientific Center of the Siberian Branch of the Russian Academy of Sciences, 10/4 Akademicheskii Pr., 634055 Tomsk, RussiaTomsk Scientific Center of the Siberian Branch of the Russian Academy of Sciences, 10/4 Akademicheskii Pr., 634055 Tomsk, RussiaDiscrete (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.https://www.mdpi.com/2075-4701/11/11/1743high-energy millmechanical activationtitanium nitridemechanochemical synthesisexperimentmathematical model |
| spellingShingle | Oleg Lapshin Olga Shkoda Oksana Ivanova Sergey Zelepugin Discrete One-Stage Mechanochemical Synthesis of Titanium-Nitride in a High-Energy Mill Metals high-energy mill mechanical activation titanium nitride mechanochemical synthesis experiment mathematical model |
| title | 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_short | 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 |
| topic | high-energy mill mechanical activation titanium nitride mechanochemical synthesis experiment mathematical model |
| url | https://www.mdpi.com/2075-4701/11/11/1743 |
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