Characterization of plasma electrolytic oxidation coating on low carbon steel prepared from silicate electrolyte with Al nanoparticles
| Autor: | Baixing Liu, Wenbin Yang, Zhenjun Peng, Weimin Liu, Jun Liang |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Materials science
Carbon steel Nanoparticle Salt (chemistry) macromolecular substances 02 engineering and technology Electrolyte engineering.material 010402 general chemistry 01 natural sciences Corrosion chemistry.chemical_compound Coating Materials Chemistry chemistry.chemical_classification Process Chemistry and Technology Metallurgy technology industry and agriculture Plasma electrolytic oxidation 021001 nanoscience & nanotechnology Silicate 0104 chemical sciences Surfaces Coatings and Films Electronic Optical and Magnetic Materials chemistry Chemical engineering Ceramics and Composites engineering 0210 nano-technology |
| Zdroj: | Ceramics International. 43:16851-16858 |
| ISSN: | 0272-8842 |
| Popis: | The plasma electrolytic oxidation (PEO) coatings were prepared on low carbon steel from silicate electrolyte without and with Al nanoparticles, respectively. The structure, composition, anti-wear and anti-corrosion properties of the PEO coatings were investigated. The results indicated that the Al nanoparticles in the silicate electrolyte turned into alumina during the PEO process and reduced the amount of iron oxides in the coating. The PEO coating prepared from silicate electrolyte with Al nanoparticles showed enhanced wear resistance due to the formation of alumina. Furthermore, the coating was characterized by sealed pores on the surface, different from the open pores on the surface of PEO coating prepared from silicate electrolyte without Al nanoparticles. The modified structure and the changed composition of PEO coating by introducing Al nanoparticles in the electrolyte significantly improved the corrosion resistance of the coating, demonstrated by the electrochemical corrosion and salt spray tests. |
| Databáze: | OpenAIRE |
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