Corrosion resistance of Ni-P/SiC and Ni-P composite coatings prepared by magnetic field-enhanced jet electrodeposition
| Autor: | Hongbing Cao, Xiuqing Fu, Feixiang Wang, Xinxin Chen, Jinran Lin |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Materials science
Microscope Morphology (linguistics) Scanning electron microscope General Chemical Engineering Composite number 02 engineering and technology General Chemistry engineering.material 010402 general chemistry 021001 nanoscience & nanotechnology Microstructure 01 natural sciences 0104 chemical sciences Magnetic field Corrosion law.invention Coating law engineering Composite material 0210 nano-technology |
| Zdroj: | RSC advances. 10(56) |
| ISSN: | 2046-2069 |
| Popis: | To extend the working life of 45# steel, Ni–P and Ni–P/SiC composite coatings were prepared on its surface by magnetic field-enhanced jet electrodeposition. This study investigated the effect of magnetic field on the corrosion resistance of Ni–P and Ni–P/SiC composite coatings prepared by conventional jet electrodeposition. The surface and cross-sectional morphologies, microstructure, and composition of the composite coatings were determined by scanning electron microscopy (SEM), energy dispersive spectrometry (EDS), and X-ray diffraction (XRD), respectively. The corrosion resistance was studied using a LEXT4100 laser confocal microscope. The introduction of a stable magnetic field was found to improve the surface morphology of the coatings, increase the growth rate, and reduce the agglomeration of nano-SiC (3 g L−1, 40 nm) particles, thus significantly improving the corrosion resistance of the coatings. The corrosion potential of the Ni–P coating increased from −0.78 V (0 T) to −0.46 V (0.5 T), and the corrosion current density decreased from 9.56 × 10−6 A dm−2 (0 T) to 4.31 × 10−6 A dm−2 (0.5 T). The corrosion potential of the Ni–P/SiC coating increased from −0.59 V (0 T) to −0.28 V (0.5 T), and the corrosion current density decreased from 6.01 × 10−6 A dm−2 (0 T) to 2.90 × 10−6 A dm−2 (0.5 T). |
| Databáze: | OpenAIRE |
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