Tribological Properties of SPS Reactive Sintered Al/MoS<sub>2</sub> Composites
In search of opportunities to improve mechanical properties and abrasion resistance, composites based on aluminum reinforced with MoS<sub>2</sub> particles were produced. The authors’ previous research indicated the possibility of obtaining hard dispersion precipitates of the Al<sub&g...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2024-11-01
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| Series: | Metals |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2075-4701/14/12/1326 |
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| Summary: | In search of opportunities to improve mechanical properties and abrasion resistance, composites based on aluminum reinforced with MoS<sub>2</sub> particles were produced. The authors’ previous research indicated the possibility of obtaining hard dispersion precipitates of the Al<sub>12</sub>Mo intermetallic phase as a result of the reaction of the composite components at a temperature exceeding 550 °C during the SPS (Spark Plasma Sintering) process. This work focused on optimizing the SPS consolidation process and assessing the microstructure and mechanical properties of the obtained materials. A series of experiments proved that by increasing the amount of the strengthening phase and increasing the process temperature, a significant amount of Al<sub>12</sub>Mo and Al<sub>5</sub>Mo strengthening phases is produced. Exceptionally good dispersion of reinforcing particles and the presence of layered MoS<sub>2</sub> crystals, while ensuring optimal parameters of the synthesis process, lead to a change in friction mechanisms and improved abrasion resistance through an approximately 30-fold decrease in the wear factor. |
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| ISSN: | 2075-4701 |