Influence of temperature on tribological properties of microarc oxidation coating on 7075 aluminium alloy at 25 °C –300 °C
| Autor: | Wenbin Xue, Jiancheng Du, Lin Chen, Xuan Yang, Xiaoyue Jin |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
010302 applied physics
Materials science Process Chemistry and Technology Abrasive Alloy substrate 02 engineering and technology Tribology engineering.material 021001 nanoscience & nanotechnology 01 natural sciences Surfaces Coatings and Films Electronic Optical and Magnetic Materials Coating 7075 aluminium alloy visual_art 0103 physical sciences Materials Chemistry Ceramics and Composites engineering Adhesive wear visual_art.visual_art_medium Ceramic Composite material 0210 nano-technology |
| Zdroj: | Ceramics International. 45:12312-12318 |
| ISSN: | 0272-8842 |
| DOI: | 10.1016/j.ceramint.2019.03.146 |
| Popis: | The high-temperature tribological properties of bare 7075 Al – Zn – Mg – Cu alloy substrate and microarc oxidation (MAO) coating against ZrO2 ceramic ball were evaluated at 25 °C −300 °C. Coefficients of friction were recorded, and wear rates were determined. Surface morphology and wear scars on the ZrO2 ball were observed. Furthermore, wear mechanisms at three different temperatures were discussed. It was found that the MAO coating could maintain a low wear rate and a stable wear performance in an elevated temperature environment. At 300 °C, the wear rate of MAO coating was merely 1/11 of 7075 aluminium alloy substrate. MAO coating suffered mainly adhesive wear at ambient temperature, and both adhesive wear and abrasive wear at elevated temperatures. |
| Databáze: | OpenAIRE |
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