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Flame synthesis of carbon nanostructures on Ni-plated hardmetal substrates.

Zhu H, Kuang T, Zhu B, Lei S, Liu Z, Ringer SP - Nanoscale Res Lett (2011)

Bottom Line: In this article, we demonstrate that carbon nanostructures could be synthesized on the Ni-plated YG6 (WC-6 wt% Co) hardmetal substrate by a simple ethanol diffusion flame method.The growth mechanism of such carbon nanostructures is discussed.This work may provide a strategy to improve the performance of hardmetal products and thus to widen their potential applications.

View Article: PubMed Central - HTML - PubMed

Affiliation: Analytical and Testing Center, South China University of Technology, Guangzhou 510640, China. tckuang@scut.edu.cn.

ABSTRACT
In this article, we demonstrate that carbon nanostructures could be synthesized on the Ni-plated YG6 (WC-6 wt% Co) hardmetal substrate by a simple ethanol diffusion flame method. The morphologies and microstructures of the Ni-plated layer and the carbon nanostructures were examined by various techniques including scanning electron microscopy, X-ray diffraction, and Raman spectroscopy. The growth mechanism of such carbon nanostructures is discussed. This work may provide a strategy to improve the performance of hardmetal products and thus to widen their potential applications.

No MeSH data available.


A schematic representation of the experimental flame used in this work.
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Figure 1: A schematic representation of the experimental flame used in this work.

Mentions: The diffusion flame was produced by a common laboratory alcohol burner using pure ethanol as the fuel. It is well known that a natural flame of the alcohol burner contains three distinct regions, namely the outer flame, the inner flame, and the flame center. However, only the inner flame of the incomplete combustion is plentifully dissociated with carbon particles, which are responsible for the growth of carbon materials [8,12,13]. In this study, the visible inner flame zone was located between 4 and 6 cm above the fuel nozzle of the alcohol burner. Considering the factors such as the flame size, temperature, and the unavoidable flame instability in the combustion process, the Ni-plated hardmetal substrates were inserted in the flame at 5 cm above the fuel nozzle. To make it clear, Figure 1 shows the position of the substrates in the flame, and the flame temperature distribution at different heights of the alcohol burner was shown in Figure 2. The flame temperature at 5 cm was measured about 800°C by a K-type thermocouple with a diameter of 1 mm. The synthesis time was set to 30 and 60 min. Hereafter, the hardmetal samples exposed to different time were referred to the 30-min sample and the 60-min sample, respectively.


Flame synthesis of carbon nanostructures on Ni-plated hardmetal substrates.

Zhu H, Kuang T, Zhu B, Lei S, Liu Z, Ringer SP - Nanoscale Res Lett (2011)

A schematic representation of the experimental flame used in this work.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC3211419&req=5

Figure 1: A schematic representation of the experimental flame used in this work.
Mentions: The diffusion flame was produced by a common laboratory alcohol burner using pure ethanol as the fuel. It is well known that a natural flame of the alcohol burner contains three distinct regions, namely the outer flame, the inner flame, and the flame center. However, only the inner flame of the incomplete combustion is plentifully dissociated with carbon particles, which are responsible for the growth of carbon materials [8,12,13]. In this study, the visible inner flame zone was located between 4 and 6 cm above the fuel nozzle of the alcohol burner. Considering the factors such as the flame size, temperature, and the unavoidable flame instability in the combustion process, the Ni-plated hardmetal substrates were inserted in the flame at 5 cm above the fuel nozzle. To make it clear, Figure 1 shows the position of the substrates in the flame, and the flame temperature distribution at different heights of the alcohol burner was shown in Figure 2. The flame temperature at 5 cm was measured about 800°C by a K-type thermocouple with a diameter of 1 mm. The synthesis time was set to 30 and 60 min. Hereafter, the hardmetal samples exposed to different time were referred to the 30-min sample and the 60-min sample, respectively.

Bottom Line: In this article, we demonstrate that carbon nanostructures could be synthesized on the Ni-plated YG6 (WC-6 wt% Co) hardmetal substrate by a simple ethanol diffusion flame method.The growth mechanism of such carbon nanostructures is discussed.This work may provide a strategy to improve the performance of hardmetal products and thus to widen their potential applications.

View Article: PubMed Central - HTML - PubMed

Affiliation: Analytical and Testing Center, South China University of Technology, Guangzhou 510640, China. tckuang@scut.edu.cn.

ABSTRACT
In this article, we demonstrate that carbon nanostructures could be synthesized on the Ni-plated YG6 (WC-6 wt% Co) hardmetal substrate by a simple ethanol diffusion flame method. The morphologies and microstructures of the Ni-plated layer and the carbon nanostructures were examined by various techniques including scanning electron microscopy, X-ray diffraction, and Raman spectroscopy. The growth mechanism of such carbon nanostructures is discussed. This work may provide a strategy to improve the performance of hardmetal products and thus to widen their potential applications.

No MeSH data available.