High-Temperature Resistant and Gas-Tight Coatings for Long-Term Heat Treatments using the Example of α-Cu-Al-Zn
| Autor: | Markus Rettenmayr, Hannes Engelhardt, D. Mey |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Materials science
Mechanics of Materials Metallurgy Shielding gas 0211 other engineering and technologies Metals and Alloys Evaporation 02 engineering and technology 021001 nanoscience & nanotechnology 0210 nano-technology Condensed Matter Physics 021102 mining & metallurgy Electronic Optical and Magnetic Materials |
| Zdroj: | Practical Metallography. 56:655-668 |
| ISSN: | 2195-8599 0032-678X |
| DOI: | 10.3139/147.110593 |
| Popis: | Cu alloys with relatively small contents of Zn and Al will oxidize heavily during heat treatment in air. Using shielding gas, however, will lead to the evaporation of Zn. A gas-tight coating, which also prevents oxidation, is required when heat treatments are carried out over several days or weeks. In the context of experiments that are aiming at the determination of diffusion parameters such long-term heat treatments are carried out. Different coatings on Cu-Zn12-Al4 (wt.%) heat-treated at 850 °C over 72 h were evaluated. A suitable system of layers consisting of an Y2O3-based and a MgO-based coating was successfully applied using the example of a heat treatment on Cu-Zn15-Al1 at 850 °C over 27 days. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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