| Autor: |
Hossein Rajaei, Sasan Amirabdollahian, Cinzia Menapace, Giovanni Straffelini, Stefano Gialanella |
| Jazyk: |
angličtina |
| Rok vydání: |
2023 |
| Předmět: |
|
| Zdroj: |
Lubricants, Vol 11, Iss 11, p 477 (2023) |
| Druh dokumentu: |
article |
| ISSN: |
2075-4442 |
| DOI: |
10.3390/lubricants11110477 |
| Popis: |
In this study, the potential of Fe3Al coating material as an environmentally friendly alternative to coatings containing critical elements for brake discs was investigated. A buffer layer of Cr–Mo steel (Ferro 55) that was about 500 µm thick was applied on a gray cast iron disc to enhance the coating quality and prevent the formation of hot cracks during solidification. The microstructural analysis of the cross-section of the coating showed that the buffer layer diffused into the Fe3Al coating, forming a combination of Fe3Al, Fe, and Fe3AlC0.5 phases. The tribological properties of the Fe3Al-coated disc were evaluated using pin-on-disc tests against two different copper-free friction materials extracted from commercial brake pads. The wear results show a coefficient of friction comparable to that of an uncoated disc (≈0.55), but with a reduction in particulate matter (PM) emissions, which decreased from 600 to 476 #/cm3. The last issue is an interesting aspect that is gaining increasing importance in view of the upcoming international standards. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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