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Citation: Zhu Li-Qun, Zhang Wei. The Codeposition Mechanism and Function of Oil-containing Microcapsule Composite Copper Coating[J]. Acta Physico-Chimica Sinica, ;2004, 20(08): 795-800. doi: 10.3866/PKU.WHXB20040803 shu

The Codeposition Mechanism and Function of Oil-containing Microcapsule Composite Copper Coating

Zhu Li-Qun ,
Zhang Wei

1.
Department of Applied Chemistry, Institute of Materials, Beijing University of Aeronautics and Astronautics, Beijing　100083

Received Date: 6 January 2004
Available Online: 15 August 2004

Function of the composite copper coating containing lubricating oil microcapsules was discussed with codeposition mechanism. The oil-containing microcapsules were prepared by a method of simple coacervation in aqueous solution. Lubricating oil and PVA (polyvinyl alcohol) were used as the core and wall materials of microcapsules, respectively. The surface micrograph of the composite copper coating containing oil microcapsules was observed by scan electron microscope. The surface composition was analyzed by dot-scan and line-scan of energy dispersion spectrum. Corrosion resistance of the composite copper coating was evaluated by anodic polarization curve obtained in 0.5 mol•L－1 H2SO4 solution. Wear-resistance of the composite copper was evaluated by the curves of weight lost and sliding friction coefficient during abrasion. Results showed that the microcapsules were contained in the copper coating. The composite copper coating containing the lubricating oil microcapsule had much better corrosion resistance and wear-resistance than the copper coating without microcapsule. In addition, the electrocodeposition mechanism could be explained by a two-step adsorption and an electrochemistry mechanism, which had been used for solid particulate codeposition. The lubricative and repairing function of the oil-containing microcapsule composite copper coating had also been discussed in the paper.
- Microcapsule;Composite copper coating;Corrosion resistance;Wear-resistance
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