| 纳米核壳式铜-锡双金属粉的制备及性能研究 |
| Preparation and Characterization of Core-shell Cu-Sn Bimetallic Nanoparticles |
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| 摘要: |
| 关键词: 纳米 铜-锡双金属粉 润滑油添加剂 极压性 |
| 基金项目: |
| Abstract: A kind of novel core-shell Cu-Sn bimetallic nanoparticles has been prepared by a new method (displacement method), in which Sn was made to cover on the surface of Cu nano-core. The preparation method and reaction mechanism have been discussed. This reaction happened under the existence of coordinate agent-(NH2)2CS and protective agent PVP. The nanoparticles prepared were with a core-shell structure, granule diameter between 50～100 nm and good dispersing capability. The Cu-Sn nanoparticles proposed has better oxidation-resistant ability than Cu nanoparticles with corresponding granule diameter and can be applied as lubricant additives as well as antibacterial agent. When the additive amount is very low (0.1wt‰～0.5wt‰), it can improve the PB of the lubricant by 92%～106%, and also enhance its antiwear characteristics and friction-reducing properties. At the concentration of 1 000 ppm, it can reach an antibacterial ratio of 99.99%. |
| Keywords: nanoparticles Cu-Sn bimetal lubricant additives PB |
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| 牟国俊,赵 斌.纳米核壳式铜-锡双金属粉的制备及性能研究[J].无机化学学报,2004,20(9):1055-1060. |
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