Microstructure and Pitting Corrosion Behavior of Plasma-Sprayed Fe-Si Nanocomposite Coating
| Autor: | Xi Shi, Han Hongbo, Qingdong Zhong, Xinjing Meng, Mingyong Shu, QuocBinh Bui, Jian Yang |
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| Rok vydání: | 2016 |
| Předmět: |
010302 applied physics
Materials science Scanning electron microscope Metallurgy Nanoparticle Atmospheric-pressure plasma 02 engineering and technology 021001 nanoscience & nanotechnology Condensed Matter Physics Microstructure 01 natural sciences Surfaces Coatings and Films Scanning electrochemical microscopy Transmission electron microscopy 0103 physical sciences Materials Chemistry Pitting corrosion Composite material 0210 nano-technology Nanoscopic scale |
| Zdroj: | Journal of Thermal Spray Technology. 25:1079-1086 |
| ISSN: | 1544-1016 1059-9630 |
| DOI: | 10.1007/s11666-016-0408-6 |
| Popis: | In this study, Fe-Si nanoparticle composite coating (FSN) and Fe-Si microparticle composite coating (FSM) were prepared via atmospheric plasma spraying, and FSN was thermally treated under hydrogen atmosphere at 1120 °C for holding time of 2.5 h (TFSN). Under transmission electron microscopy, many unmelted nanoscale particles were observed in FSN, while no substantial particles were found in TFSN. On scanning electron microscopy analysis, pores and cracks were observed in FSM and FSN, while no defects were found in TFSN. Scanning electrochemical microscopy testing in 3.5 wt.% NaCl for 5 h revealed that FSM underwent severe pitting corrosion, FSN showed relatively minor pitting corrosion, and TFSN had no pitting corrosion. |
| Databáze: | OpenAIRE |
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