Efficient Sintering of Mo Matrix Composites—A Study of Temperature Dependences and the Use of the Sinter Additive Ni
Mo matrix composites (MMC) with Mo-9Si-8B inclusions were fabricated by pressure-less sintering (PLS) and spark plasma sintering (SPS) techniques at temperatures between 1200–1500 °C using 1 wt.% Ni sinter additive. The positive impact of the addition Ni addition on the sinterability and formation o...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-10-01
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| Series: | Metals |
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| Online Access: | https://www.mdpi.com/2075-4701/13/10/1715 |
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| author | Ievgen Solodkyi Vadym Petrusha Mihai Alexandru Grigoroscuta Janett Schmelzer Georg Hasemann Ulf Betke Petre Badica Manja Krüger |
| author_facet | Ievgen Solodkyi Vadym Petrusha Mihai Alexandru Grigoroscuta Janett Schmelzer Georg Hasemann Ulf Betke Petre Badica Manja Krüger |
| author_sort | Ievgen Solodkyi |
| collection | DOAJ |
| description | Mo matrix composites (MMC) with Mo-9Si-8B inclusions were fabricated by pressure-less sintering (PLS) and spark plasma sintering (SPS) techniques at temperatures between 1200–1500 °C using 1 wt.% Ni sinter additive. The positive impact of the addition Ni addition on the sinterability and formation of a continuous Mo matrix of MMC with randomly distributed Mo<sub>3</sub>Si and Mo<sub>5</sub>SiB<sub>2</sub> inclusions was determined. The Ni addition increased the shrinkage of MMC during PLS by almost a third. The continuous Mo matrix of MMC and a relative density of more than 98% was obtained after SPS at 1400–1500 °C. The composite with the maximum relative density of 98% showed a Vickers hardness of 482 ± 9 (HV20). The potential of using Ni-activated PLS and SPS to produce high-density MMC is shown. |
| first_indexed | 2024-03-10T21:03:53Z |
| format | Article |
| id | doaj.art-ac658c6f6aaf430b81df46ff3ad0ff69 |
| institution | Directory Open Access Journal |
| issn | 2075-4701 |
| language | English |
| last_indexed | 2024-03-10T21:03:53Z |
| publishDate | 2023-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Metals |
| spelling | doaj.art-ac658c6f6aaf430b81df46ff3ad0ff692023-11-19T17:21:53ZengMDPI AGMetals2075-47012023-10-011310171510.3390/met13101715Efficient Sintering of Mo Matrix Composites—A Study of Temperature Dependences and the Use of the Sinter Additive NiIevgen Solodkyi0Vadym Petrusha1Mihai Alexandru Grigoroscuta2Janett Schmelzer3Georg Hasemann4Ulf Betke5Petre Badica6Manja Krüger7Institute of Materials and Joining Technology, Otto-von-Guericke University Magdeburg, Universitätsplatz 2, 39106 Magdeburg, GermanyInstitute of Materials and Joining Technology, Otto-von-Guericke University Magdeburg, Universitätsplatz 2, 39106 Magdeburg, GermanyNational Institute of Materials Physics, Atomistilor 405 A, 077125 Magurele, RomaniaInstitute of Materials and Joining Technology, Otto-von-Guericke University Magdeburg, Universitätsplatz 2, 39106 Magdeburg, GermanyInstitute of Materials and Joining Technology, Otto-von-Guericke University Magdeburg, Universitätsplatz 2, 39106 Magdeburg, GermanyInstitute of Materials and Joining Technology, Otto-von-Guericke University Magdeburg, Universitätsplatz 2, 39106 Magdeburg, GermanyNational Institute of Materials Physics, Atomistilor 405 A, 077125 Magurele, RomaniaInstitute of Materials and Joining Technology, Otto-von-Guericke University Magdeburg, Universitätsplatz 2, 39106 Magdeburg, GermanyMo matrix composites (MMC) with Mo-9Si-8B inclusions were fabricated by pressure-less sintering (PLS) and spark plasma sintering (SPS) techniques at temperatures between 1200–1500 °C using 1 wt.% Ni sinter additive. The positive impact of the addition Ni addition on the sinterability and formation of a continuous Mo matrix of MMC with randomly distributed Mo<sub>3</sub>Si and Mo<sub>5</sub>SiB<sub>2</sub> inclusions was determined. The Ni addition increased the shrinkage of MMC during PLS by almost a third. The continuous Mo matrix of MMC and a relative density of more than 98% was obtained after SPS at 1400–1500 °C. The composite with the maximum relative density of 98% showed a Vickers hardness of 482 ± 9 (HV20). The potential of using Ni-activated PLS and SPS to produce high-density MMC is shown.https://www.mdpi.com/2075-4701/13/10/1715Mo alloysmetal–matrix compositespressure-less sinteringspark plasma sinteringstructure |
| spellingShingle | Ievgen Solodkyi Vadym Petrusha Mihai Alexandru Grigoroscuta Janett Schmelzer Georg Hasemann Ulf Betke Petre Badica Manja Krüger Efficient Sintering of Mo Matrix Composites—A Study of Temperature Dependences and the Use of the Sinter Additive Ni Metals Mo alloys metal–matrix composites pressure-less sintering spark plasma sintering structure |
| title | Efficient Sintering of Mo Matrix Composites—A Study of Temperature Dependences and the Use of the Sinter Additive Ni |
| title_full | Efficient Sintering of Mo Matrix Composites—A Study of Temperature Dependences and the Use of the Sinter Additive Ni |
| title_fullStr | Efficient Sintering of Mo Matrix Composites—A Study of Temperature Dependences and the Use of the Sinter Additive Ni |
| title_full_unstemmed | Efficient Sintering of Mo Matrix Composites—A Study of Temperature Dependences and the Use of the Sinter Additive Ni |
| title_short | Efficient Sintering of Mo Matrix Composites—A Study of Temperature Dependences and the Use of the Sinter Additive Ni |
| title_sort | efficient sintering of mo matrix composites a study of temperature dependences and the use of the sinter additive ni |
| topic | Mo alloys metal–matrix composites pressure-less sintering spark plasma sintering structure |
| url | https://www.mdpi.com/2075-4701/13/10/1715 |
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