Effect of Mechanical Activation of Al-Ti-B Powder Mixture on Phase Composition and Structure of Al-TiB<sub>2</sub> Composite Materials Obtained by Self-Propagating High-Temperature Synthesis (SHS)
In this study, we successfully obtained Al-TiB<sub>2</sub> composite materials using self-propagating high-temperature synthesis and preliminary mechanical activation of the initial Al-(Ti + 2B) powder mixture with a high aluminum content (70 wt.%). We investigated the possibility of con...
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MDPI AG
2022-04-01
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| Online Access: | https://www.mdpi.com/1996-1944/15/7/2668 |
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| author | Alexey Matveev Vladimir Promakhov Pavel Nikitin Artem Babaev Alexander Vorozhtsov |
| author_facet | Alexey Matveev Vladimir Promakhov Pavel Nikitin Artem Babaev Alexander Vorozhtsov |
| author_sort | Alexey Matveev |
| collection | DOAJ |
| description | In this study, we successfully obtained Al-TiB<sub>2</sub> composite materials using self-propagating high-temperature synthesis and preliminary mechanical activation of the initial Al-(Ti + 2B) powder mixture with a high aluminum content (70 wt.%). We investigated the possibility of controlling the structure of synthesis products, in particular, the size and shape of ceramic particles. We examined the effects of the mechanical activation of the initial powder mixture on the structure and particle size of titanium diboride in the synthesis products. We proposed a mechanism of structure formation in the synthesis products obtained by SHS using the method of preliminary mechanical activation of the initial mixture. We found that mechanical activation for 60-180 s led to the formation of isolated TiB<sub>2</sub> particles of prolate and irregular shape. The average particle size of TiB<sub>2</sub> in the synthesis products was 0.77 (after 60 s of mechanical activation) and 1.5 µm (after 180 s of mechanical activation), respectively. An increase in the duration of mechanical activation to 900 s led to the formation of an island (skeletal) structure, in which there were interconnected aggregates and isolated particles of titanium diboride. The average size of these particles was 4.3 µm. |
| first_indexed | 2024-03-09T11:38:52Z |
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| id | doaj.art-161daa4753f047a1b3c17907e8ca659d |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-09T11:38:52Z |
| publishDate | 2022-04-01 |
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| record_format | Article |
| series | Materials |
| spelling | doaj.art-161daa4753f047a1b3c17907e8ca659d2023-11-30T23:35:18ZengMDPI AGMaterials1996-19442022-04-01157266810.3390/ma15072668Effect of Mechanical Activation of Al-Ti-B Powder Mixture on Phase Composition and Structure of Al-TiB<sub>2</sub> Composite Materials Obtained by Self-Propagating High-Temperature Synthesis (SHS)Alexey Matveev0Vladimir Promakhov1Pavel Nikitin2Artem Babaev3Alexander Vorozhtsov4Center for Additive Technologies, National Research Tomsk State University, Lenin Avenue, 36, 634050 Tomsk, RussiaCenter for Additive Technologies, National Research Tomsk State University, Lenin Avenue, 36, 634050 Tomsk, RussiaCenter for Additive Technologies, National Research Tomsk State University, Lenin Avenue, 36, 634050 Tomsk, RussiaCenter for Additive Technologies, National Research Tomsk State University, Lenin Avenue, 36, 634050 Tomsk, RussiaCenter for Additive Technologies, National Research Tomsk State University, Lenin Avenue, 36, 634050 Tomsk, RussiaIn this study, we successfully obtained Al-TiB<sub>2</sub> composite materials using self-propagating high-temperature synthesis and preliminary mechanical activation of the initial Al-(Ti + 2B) powder mixture with a high aluminum content (70 wt.%). We investigated the possibility of controlling the structure of synthesis products, in particular, the size and shape of ceramic particles. We examined the effects of the mechanical activation of the initial powder mixture on the structure and particle size of titanium diboride in the synthesis products. We proposed a mechanism of structure formation in the synthesis products obtained by SHS using the method of preliminary mechanical activation of the initial mixture. We found that mechanical activation for 60-180 s led to the formation of isolated TiB<sub>2</sub> particles of prolate and irregular shape. The average particle size of TiB<sub>2</sub> in the synthesis products was 0.77 (after 60 s of mechanical activation) and 1.5 µm (after 180 s of mechanical activation), respectively. An increase in the duration of mechanical activation to 900 s led to the formation of an island (skeletal) structure, in which there were interconnected aggregates and isolated particles of titanium diboride. The average size of these particles was 4.3 µm.https://www.mdpi.com/1996-1944/15/7/2668mechanical activationself-propagating high-temperature synthesisnon-steady combustionphase compositiontitanium diboridealuminum |
| spellingShingle | Alexey Matveev Vladimir Promakhov Pavel Nikitin Artem Babaev Alexander Vorozhtsov Effect of Mechanical Activation of Al-Ti-B Powder Mixture on Phase Composition and Structure of Al-TiB<sub>2</sub> Composite Materials Obtained by Self-Propagating High-Temperature Synthesis (SHS) Materials mechanical activation self-propagating high-temperature synthesis non-steady combustion phase composition titanium diboride aluminum |
| title | Effect of Mechanical Activation of Al-Ti-B Powder Mixture on Phase Composition and Structure of Al-TiB<sub>2</sub> Composite Materials Obtained by Self-Propagating High-Temperature Synthesis (SHS) |
| title_full | Effect of Mechanical Activation of Al-Ti-B Powder Mixture on Phase Composition and Structure of Al-TiB<sub>2</sub> Composite Materials Obtained by Self-Propagating High-Temperature Synthesis (SHS) |
| title_fullStr | Effect of Mechanical Activation of Al-Ti-B Powder Mixture on Phase Composition and Structure of Al-TiB<sub>2</sub> Composite Materials Obtained by Self-Propagating High-Temperature Synthesis (SHS) |
| title_full_unstemmed | Effect of Mechanical Activation of Al-Ti-B Powder Mixture on Phase Composition and Structure of Al-TiB<sub>2</sub> Composite Materials Obtained by Self-Propagating High-Temperature Synthesis (SHS) |
| title_short | Effect of Mechanical Activation of Al-Ti-B Powder Mixture on Phase Composition and Structure of Al-TiB<sub>2</sub> Composite Materials Obtained by Self-Propagating High-Temperature Synthesis (SHS) |
| title_sort | effect of mechanical activation of al ti b powder mixture on phase composition and structure of al tib sub 2 sub composite materials obtained by self propagating high temperature synthesis shs |
| topic | mechanical activation self-propagating high-temperature synthesis non-steady combustion phase composition titanium diboride aluminum |
| url | https://www.mdpi.com/1996-1944/15/7/2668 |
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