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| rdf:type
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| Description
| - Electrochemical processes leading to formation of an ordered nanostructures are currently intensively studied. Such modified surfaces can be used in many practical applications - medicine, catalysis, photovoltaics, etc. The surface of titanium can be covered by an ordered layer of nanotubes when experimental conditions are carefully selected. According to the theory could be similarly modified surface of other metals. However, the literature dealing with this issue offers much less information than it is in the case of titanium and also indicates that the nanostructure formation occurs at significantly different experimental conditions. The work was focused on creating nanostructures on tantalum and niobium.Measurements were carried out with the potentiostat-galvanostat Jaissle Potentiostat IMP 88 PC-200V. Experiments were done in mixtures of hydrofluoric acid with sulphuric, phosphoric acid etc. The formed nanostructures were evaluated by the scanning electron microscope. At lower scan rates, 25 to 75 mV?s-1, and all exposure lengths the surface of tantalum was covered by nanostructure. Final state of surfaces was not arranged layer of nanotubes, but the structure with an irregular distribution of pores with sizes of tens of nanometers. The results of measurements on niobium lead to the conclusion that neither the potential value nor the length of potentiostatic delay do not allowed for the desired surface state achievement. Based on the results we can conclude that on tantalum a layer of numerous nano-pores was formed. Desired nanostructures on niobium were not achieved by any combination of experimental conditions.
- Electrochemical processes leading to formation of an ordered nanostructures are currently intensively studied. Such modified surfaces can be used in many practical applications - medicine, catalysis, photovoltaics, etc. The surface of titanium can be covered by an ordered layer of nanotubes when experimental conditions are carefully selected. According to the theory could be similarly modified surface of other metals. However, the literature dealing with this issue offers much less information than it is in the case of titanium and also indicates that the nanostructure formation occurs at significantly different experimental conditions. The work was focused on creating nanostructures on tantalum and niobium.Measurements were carried out with the potentiostat-galvanostat Jaissle Potentiostat IMP 88 PC-200V. Experiments were done in mixtures of hydrofluoric acid with sulphuric, phosphoric acid etc. The formed nanostructures were evaluated by the scanning electron microscope. At lower scan rates, 25 to 75 mV?s-1, and all exposure lengths the surface of tantalum was covered by nanostructure. Final state of surfaces was not arranged layer of nanotubes, but the structure with an irregular distribution of pores with sizes of tens of nanometers. The results of measurements on niobium lead to the conclusion that neither the potential value nor the length of potentiostatic delay do not allowed for the desired surface state achievement. Based on the results we can conclude that on tantalum a layer of numerous nano-pores was formed. Desired nanostructures on niobium were not achieved by any combination of experimental conditions. (en)
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| Title
| - Preparation of nanostructured surfaces on tantalum and niobium
- Preparation of nanostructured surfaces on tantalum and niobium (en)
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| skos:prefLabel
| - Preparation of nanostructured surfaces on tantalum and niobium
- Preparation of nanostructured surfaces on tantalum and niobium (en)
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| skos:notation
| - RIV/60461373:22310/12:43894764!RIV13-TA0-22310___
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| http://linked.open...avai/riv/aktivita
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| http://linked.open...avai/riv/aktivity
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| http://linked.open...vai/riv/dodaniDat
| |
| http://linked.open...aciTvurceVysledku
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| http://linked.open.../riv/druhVysledku
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| http://linked.open...iv/duvernostUdaju
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| http://linked.open...titaPredkladatele
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| http://linked.open...dnocenehoVysledku
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| http://linked.open...ai/riv/idVysledku
| - RIV/60461373:22310/12:43894764
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| http://linked.open...riv/jazykVysledku
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| http://linked.open.../riv/klicovaSlova
| - Tantalum, niobium, nanostructures, electrochemical oxidation, pores (en)
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| http://linked.open.../riv/klicoveSlovo
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| http://linked.open...ontrolniKodProRIV
| |
| http://linked.open...v/mistoKonaniAkce
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| http://linked.open...i/riv/mistoVydani
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| http://linked.open...i/riv/nazevZdroje
| - NANOCON 2012 Conference Proceedings 4th International conference
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| http://linked.open...in/vavai/riv/obor
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| http://linked.open...ichTvurcuVysledku
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| http://linked.open...cetTvurcuVysledku
| |
| http://linked.open...vavai/riv/projekt
| |
| http://linked.open...UplatneniVysledku
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| http://linked.open...iv/tvurceVysledku
| - Fojt, Jaroslav
- Moravec, Hynek
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| http://linked.open...vavai/riv/typAkce
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| http://linked.open.../riv/zahajeniAkce
| |
| number of pages
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| http://purl.org/ne...btex#hasPublisher
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| https://schema.org/isbn
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| http://localhost/t...ganizacniJednotka
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