Material characterisation of lightweight disc brake rotors
| Autor: | P.C. Brooks, Abdulwahab A. Alnaqi, Shahriar Kosarieh, Suman Shrestha, David C. Barton |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
0209 industrial biotechnology
Materials science Mechanical Engineering Metallurgy 020302 automobile design & engineering 02 engineering and technology engineering.material Plasma electrolytic oxidation Durability law.invention chemistry.chemical_compound 020901 industrial engineering & automation 0203 mechanical engineering chemistry Coating law Alumina ceramic Brake Aluminium oxide engineering General Materials Science Disc brake Composite material |
| Zdroj: | Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications. 232:555-565 |
| ISSN: | 2041-3076 1464-4207 |
| DOI: | 10.1177/1464420716638683 |
| Popis: | Alumina coated lightweight brake rotors were investigated to evaluate the effect of coating properties on their friction performance and thermal durability. An alumina ceramic coating on AA6082 aluminium alloy (Al-Alloy) and on 6061/40SiC aluminium metal matrix composite (Al-MMC) prepared by plasma electrolytic oxidation was studied using a programme of brake dynamometer and material characterisation tests. The results showed that the plasma electrolytic oxidation alumina layer adhered well to the Al-alloy substrate and was more uniform and durable when compared to that on the aluminium metal matrix composite. The plasma electrolytic oxidation layer significantly improved the hardness of the rotor surface for both Al-alloy and aluminium metal matrix composite substrate. The coated Al-alloy disc brake rotor was demonstrated to give good thermal and friction performance up to high rubbing surface temperatures of the order of 550 ℃, but the rotor eventually failed due to temperature build-up at a critical location. |
| Databáze: | OpenAIRE |
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