Wood-Powder-Template-Based Syntheses and Tribology of Copper Oxide Particles as Lubricating Oil Additives
Wood-Powder-Template-Based Syntheses and Tribology of Copper Oxide Particles as Lubricating Oil Additives
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DOI：
10.2474/trol.15.68
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发表时间：
2020-04
期刊：
影响因子：
1
通讯作者：
N. Matsumoto;Mikihiro Maeda;K. Kajita;Yuya Omiya;H. Kinoshita
中科院分区：
文献类型：
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作者：
N. Matsumoto;Mikihiro Maeda;K. Kajita;Yuya Omiya;H. Kinoshita
采用木粉模板法合成了铜基颗粒。将混合有库珀盐水溶液的木粉在N2气流下加热，然后，将木炭粉和铜颗粒的混合物在空气中加热以除去木炭。最后合成了小于1 μm的氧化木铜颗粒（OWCu）。木粉作为模板，限制了铜颗粒的尺寸。此外，在销-板往复摩擦磨损试验机上考察了OWCu在合成油中的摩擦学性能。我们的研究结果表明，0.5质量%的OWCu降低的摩擦系数（最大45%）和磨损体积（最大39%）的PAO 4润滑的SUJ 2。在400°C和N2气氛下合成的OWCu还原效果最好，其平均粒径最小，在磨痕上的覆盖率最大。这些事实表明，减小OWCu的颗粒尺寸可以增加润滑剂的覆盖率，提高摩擦系数和减磨体积效果。控制基于木粉模板的合成颗粒的最佳尺寸以用于滑动表面的粗糙度将有助于实现更好的摩擦学性能。
Copper based particles were synthesized by a wood-powder-template-based process. Wood powders mixed with an aqueous cooper salt solution were heated under N2 gas flow, and then, the mixture of the charcoal powder and copper particles were heated in air to remove charcoal. Finally, oxidized wood-derived copper particles (OWCu) of less than 1 μm were synthesized. Wood powders acted as the template and limited the sizes of the copper particles. In addition, the tribological properties of OWCu in synthetic oil were investigated using a pin-on-plate reciprocating tribometer. Our results revealed that 0.5 mass% OWCu reduced both the friction coefficient (max 45%) and wear volume (max 39%) of SUJ2 lubricated by PAO4. The best reduction effect was obtained for OWCu synthesized at 400°C under N2 gas flow, which had the smallest average particle size, where the coverage of the OWCu layer on the wear track was the largest. These facts suggest that the particle size reduction of OWCu can increase the coverage and improve the friction coefficient and wear volume reduction effects of the lubricant. Control of the wood-powder-template-based synthesized particles to the optimal size for the roughness of the sliding surface would help achieve better tribological performance.