Wear and Friction Characteristics of In Situ TiC-Reinforced Ti<sub>3</sub>SiC<sub>2</sub>-Ti<sub>5</sub>Si<sub>3</sub> Composites Against 100Cr6 Steel Counterpart
In this study, the dry sliding characteristics of a Ti<sub>3</sub>SiC<sub>2</sub>/Ti<sub>5</sub>Si<sub>3</sub> matrix reinforced with different TiC contents against a 100Cr6 steel ball were investigated. The composites were fabricated using the spark p...
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| Main Authors: | , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2024-10-01
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| Series: | Lubricants |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2075-4442/12/11/368 |
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| Summary: | In this study, the dry sliding characteristics of a Ti<sub>3</sub>SiC<sub>2</sub>/Ti<sub>5</sub>Si<sub>3</sub> matrix reinforced with different TiC contents against a 100Cr6 steel ball were investigated. The composites were fabricated using the spark plasma sintering method with Ti, SiC, and C powders. SEM revealed that the composites possessed damage tolerance behavior, where grain pull-out, buckling, delamination, and diffuse microcracking were observed. In comparison, the unreinforced composite showed severe adhesive wear and tribo-oxidative wear mechanisms. The integration of the TiC phase in the Ti<sub>3</sub>SiC<sub>2</sub>/Ti<sub>5</sub>Si<sub>3</sub> matrix enhanced the wear resistance by at least one order of magnitude. A new wear regime was observed in the TiC-reinforced composites, classified as mild wear, where tribo-oxidation and third-body abrasion were dominant, with ferrous deposits on the sliding surfaces. |
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| ISSN: | 2075-4442 |