Alaf M, Gultekin D, Akbulut H
Engineering Faculty, Department of Metallurgy and Materials Engineering, Sakarya University, Esentepe Campus, 54187 Sakarya, Turkey.
J Nanosci Nanotechnol. 2012 Dec;12(12):9058-66. doi: 10.1166/jnn.2012.6753.
In this study, tin/tinoxide/multi oxide/multi walled carbon nano tube (Sn/SnO2/MWCNT) composites were produced by thermal evaporation and then subsequent plasma oxidation. Buckypapers having controlled porosity were prepared by vacuum filtration from functionalized MWCNTs. Pure metallic tin was thermally evaporated on the buckypapers in argon atmosphere with different thicknesses. It was determined that the evaporated pure tin nano crystals were mechanically penetrated into pores of buckypaper to form a nanocomposite. The tin/MWCNT composites were subjected to plasma oxidation process at oxygen/argon gas mixture. Three different plasma oxidation times (30, 45 and 60 minutes) were used to investigate oxidation and physical and microstructural properties. The effect of coating thickness and oxidation time was investigated to understand the effect of process parameters on the Sn and SnO2 phases after plasma oxidation. Quantitative phase analysis was performed in order to determine the relative phase amounts. The structural properties were studied by field-emission gun scanning electron microscopy (FEG-SEM), atomic force microscopy (AFM) and X-ray diffraction (XRD).
在本研究中，通过热蒸发及随后的等离子体氧化制备了锡/二氧化锡/多氧化物/多壁碳纳米管（Sn/SnO₂/MWCNT）复合材料。通过对功能化多壁碳纳米管进行真空过滤制备了具有可控孔隙率的巴基纸。在氩气气氛中，将纯金属锡以不同厚度热蒸发到巴基纸上。经测定，蒸发的纯锡纳米晶体机械地渗透到巴基纸的孔隙中，形成纳米复合材料。将锡/多壁碳纳米管复合材料置于氧气/氩气混合气体中进行等离子体氧化处理。使用三种不同的等离子体氧化时间（30、45和60分钟）来研究氧化以及物理和微观结构性能。研究了涂层厚度和氧化时间的影响，以了解工艺参数对等离子体氧化后Sn和SnO₂相的影响。进行了定量相分析以确定相对相含量。通过场发射枪扫描电子显微镜（FEG-SEM）、原子力显微镜（AFM）和X射线衍射（XRD）研究了结构性能。
