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Effect of particle conductivity on Fe-Si composite electrodeposition
- Source :
- Chemical Research in Chinese Universities. 30:811-816
- Publication Year :
- 2014
- Publisher :
- Springer Science and Business Media LLC, 2014.
-
Abstract
- Coatings containing Fe-Si or Si particles were electrodeposited on 3.0%(mass fraction) Si steel sheets. The surface morphology, the cross-section and the silicon content of coating have been investigated, respectively. It was found that the number of particles on the coating surface and cross-section significantly decreased with increasing silicon content in the applied particles, leading to a decrease of the silicon content of coatings. About 10.2% silicon content of coatings deposited with Fe-30%Si particles can be obtained, whereas that for Si particles was only 2.9% at a particle concentration of 100 g/L and current density of 2 A/dm2. This is mainly attributed to the conductivity of applied particles. High conductivity can promote the co-deposition of the particles. With increasing silicon content in the particles, their conductivity decreased sharply, resulting in the decrease of silicon content of coatings. Present work may initiate a new method to modify the particle content of the composite coatings via changing the conductivity of the particles during the composite electrodeposition. In this paper, a possible mechanism was proposed to explain the phenomena.
Details
- ISSN :
- 22103171 and 10059040
- Volume :
- 30
- Database :
- OpenAIRE
- Journal :
- Chemical Research in Chinese Universities
- Accession number :
- edsair.doi...........4388e6ee1f00d53edcbc6c0d7f6ffee9