Synergistic effects of hydrogen plasma exposure, pulsed laser heating and temperature on rhodium surfaces
| Autor: | Laurent Marot, R. S. Wagner, R.P. Doerner, Daniel Mathys, G. De Temmerman, K.R. Umstadter, Ernst Meyer, Marcel Düggelin |
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| Rok vydání: | 2013 |
| Předmět: |
Nuclear and High Energy Physics
Materials science Scanning electron microscope Analytical chemistry chemistry.chemical_element Substrate (electronics) Plasma Laser law.invention Rhodium Nuclear Energy and Engineering X-ray photoelectron spectroscopy chemistry law General Materials Science Irradiation Porosity |
| Zdroj: | Journal of Nuclear Materials, 432, 388-394 |
| Popis: | The combined effect of hydrogen plasma exposure and surface heating, either continuous or by short laser pulses (5 ns), on the surface morphology of rhodium layers has been studied. Investigations were performed by reflectivity measurements, scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS) and atomic force microscope (AFM). While surfaces exposed at room temperature exhibit little modifications, strong surface changes are observed for surface temperatures higher than 250 °C. At 500 °C, the plasma exposed surface exhibits a nanoscale structure (50–100 nm) with a high level of porosity and a low reflectivity. Additional laser irradiation of the surface strongly enhances the observed surface damage. Localized surface melting is observed with craters extending deep into the substrate together with a dense network of voids. |
| Databáze: | OpenAIRE |
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