Effect of angular position on the quality of dense plasma focus-based additive layer manufactured molybdenum coatings
| Autor: | Abdolhadi Hosseinzadeh, N. Vosoughi, M. Nazmabadi, Eskandar Fereiduni |
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| Rok vydání: | 2018 |
| Předmět: |
Diffraction
Dense plasma focus Materials science Scanning electron microscope Mechanical Engineering chemistry.chemical_element 02 engineering and technology Substrate (electronics) engineering.material 021001 nanoscience & nanotechnology 01 natural sciences Indentation hardness Industrial and Manufacturing Engineering 010305 fluids & plasmas Computer Science Applications Coating chemistry Control and Systems Engineering Molybdenum 0103 physical sciences engineering Composite material 0210 nano-technology Layer (electronics) Software |
| Zdroj: | The International Journal of Advanced Manufacturing Technology. 99:2717-2725 |
| ISSN: | 1433-3015 0268-3768 |
| Popis: | The present research aims at depositing molybdenum on stainless steel substrate using dense plasma focus (DPF) device. The varying parameter was the angular position of substrate surface from the anode tip. The deposited layers were characterized using various analyses such as X-ray diffraction (XRD), scanning electron microscopy (SEM) equipped with energy dispersive X-ray spectroscopy (EDS), atomic force microscopy (AFM), and microhardness measurements. Microstructural observations revealed that the deposited coatings had rough surfaces containing holes as well as a stripe-featured structure covering the whole surface including the interior regions of the holes and the regions among them. Higher numbers of smaller holes formed on the surface as the angular position increased to 10°, and a spongy-like coating structure was developed which contained micro-cracks passing the whole thickness of the coating. The thickness and chemical composition of the additively layer manufactured coatings were noticeably dependent on the applied angular position. The deposited coatings had higher hardness than the substrate. However, the hardness of deposited layers was not significantly influenced by changing the angular position in the range of 0° to 10°. |
| Databáze: | OpenAIRE |
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