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Preparation Of Nanomaterials By Hydrothermal And Reactive Radio-frequency Magnetron Sputtering

Posted on:2009-03-22Degree:MasterType:Thesis
Country:ChinaCandidate:F ZhangFull Text:PDF
GTID:2121360245481010Subject:Condensed matter physics
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New materials are the basic and carriers of the development of science and technology, Nanotechnology will absolutely be dominant in all scientific fields in 21st century, which will bring an unprecedented industrial revolution, The nanomaterial is the basis of the application of nanotechnology ,one-dimensional nanomaterials have received steadily growing intersts as a result of their particular and fascinating properties, applications superior to their bulk counterparts, but also their potential application in the fields of electronic,magnetic recording, optoelectronic and so on. Therefore, it becomes the frontier and focus of the nano-materials. Now, the scientists are studying the characters of nanomaterial such as components, structures, morphogenesis, and arrangement etc, in order to acquire some prospective functions. In this paper, TiAlN coatings were prepared on p-Si (111) substrate by intermediate frequency sputtering technology using twinborn targets. ZnO nanowires and nanotubes were prepared by the hydrothermal method. CuO nanowires were prepared on the copper foil by thermal oxidation in air. The effect of annealing temperature and growth time on the morphology of the nanowires is investigated. The structure, morphology and character of the nanomaterials were employed by the X-ray diffraction (XRD) (D/Max-2400X, Rigaku Co., Japan), transmission election microscopy, field emission scanning electron microscope (FE-SEM, Hitachi S-4800), X-ray photoelectron spectra (XPS, PHI-5702) apparatus and so on. Study the growth mechanism of this one-dimensional nanomaterials prepared by hydrothermal route is carried out. The possible mechanism is also discussed for the growth of CuO nanowires. The main results and conclusions can be summarized as following:1) By the hydrothermal method, nanowires were prepared successfully; Fe doping experiments were performed, we found that the doping of Fe affected the length of ZnO nanowires. ZnO films were prepared by sol-gel route, and ZnO rods were prepared on the ZnO films by hydrothermal method. When Al doping was carried out, nanotubes were prepared on the ZnO films by hydrothermal method. 2) CuO nanowires were prepared on the copper foil by thermal oxidation in air. The effect of annealing temperature and growth time on the morphology of the nanowires is investigated. It is found that the annealing temperature and the growth time play an important role in the morphology of CuO nanowires. The biycrystal cupric oxide (CuO) microsheets were synthesized by hydrothermal route. The possible mechanism of the growth of CuO is also discussed.3) TiAlN coatings were prepared on p-Si (111) substrate by intermediate frequency sputtering technology using twinborn targets. TiAlN coatings with different atom ratio of Al and Ti were obtained. The structure and morphology of coatings were studied. The tribology properties were investigated on UMT-2MT tester. The surface morphology after tested was studied by optical microscope. As increasing the content of Al, the structure of TiAlN coatings changed obviously, and the coating with highest Al content existed grain boundary, which could be observed clearly. The tribology properties went worse with increasing Al content, and the coatings with high Al content peeled off drastically.
Keywords/Search Tags:Hydrothemal method ZnO nanowires nanotubes, CuO nanowires nanosheets, Magnetron sputtering, TiAlN coatings
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