Optimization and Effect of Reinforcements on the Sliding Wear Behavior of Self-Lubricating AZ91D-SiC-Gr Hybrid Composites
| Autor: | Rajeev Verma, Archana Thakur, Sandeep Singh Kharb, Raj Sharma, Sumankant, Sandeep Kumar Khatkar |
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| Rok vydání: | 2020 |
| Předmět: |
010302 applied physics
Materials science Delamination Composite number 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences Electronic Optical and Magnetic Materials chemistry.chemical_compound chemistry 0103 physical sciences Silicon carbide Graphite Lubricant Composite material 0210 nano-technology Reinforcement Tribometer Sliding wear |
| Zdroj: | Silicon. 13:1461-1473 |
| ISSN: | 1876-9918 1876-990X |
| DOI: | 10.1007/s12633-020-00523-0 |
| Popis: | This article statistically investigates the effect of various parameters such as material factors: silicon carbide (SiC) fraction, graphite (Gr) fraction and mechanical factors: normal load, sliding distance and speed on the sliding wear rate of self-lubricating AZ91D-SiC-Gr hybrid magnesium composites. The self-lubricating hybrid composites were fabricated using advanced vacuum assisted stir casting process. The sliding wear tests have been performed under dry conditions on pin-on-disc tribometer at 10-50 N loads, 1-3 m/s sliding speed and 1000-2000 m sliding distance. It has been examined that hybrid composites yielded improved wear resistance with reinforcement of SiC and solid lubricant graphite. ANOVA and signal-to-noise ratio investigation indicated that applied load was the most critical factor influencing the wear rate of fabricated hybrid composites followed by sliding distance. Further, the AZ91D/5SiC/5Gr hybrid composite has exhibited the best wear properties. From the SEM and EDS analysis of worn surfaces, delamination was confirmed as the dominant wear mechanism for AZ91D-SiC-Gr hybrid composites. |
| Databáze: | OpenAIRE |
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