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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.


The Raman spectra of the flame-deposited carbon nanostructures for different time lengths. (a) the 30-min sample and (b) the 60-min sample.
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Figure 6: The Raman spectra of the flame-deposited carbon nanostructures for different time lengths. (a) the 30-min sample and (b) the 60-min sample.

Mentions: Raman spectroscopy is a sensitive, convenient, and non-destructive technique for characterizing the microstructure of the carbon nanostructures [15]. Figure 6 shows the Raman spectra of the as-deposited carbon nanostructures after different flame-deposition time lengths. The peak assignments of the Raman spectra are summarized in Table 1. It is well known that the two peaks located at approximately 1350 and 1580 cm-1 are called as D-band and G-band of graphite, respectively. The D band is attributed to the disorder-induced vibration of C-C bond, and the G band corresponds to the C-C vibration of the carbon material with a sp2 orbital structure. Therefore, the relative band intensity (ID/IG) is related to the graphitic structure of the combustion material [15]. As clearly seen from Table 1, the value of ID/IG is 0.86 and 0.73 for the 30-min sample and the 60-min sample, respectively. This indicates that the as-deposited carbon nanostructures here possess a relatively higher degree of order and graphitization. Moreover, the graphitization degree of the 60-min sample is obviously higher than that of the 30-min sample, which is in good agreement with the analytic results by SEM (Figure 4) and XRD (Figure 5).


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)

The Raman spectra of the flame-deposited carbon nanostructures for different time lengths. (a) the 30-min sample and (b) the 60-min sample.
© Copyright Policy - open-access
Related In: Results  -  Collection

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

Figure 6: The Raman spectra of the flame-deposited carbon nanostructures for different time lengths. (a) the 30-min sample and (b) the 60-min sample.
Mentions: Raman spectroscopy is a sensitive, convenient, and non-destructive technique for characterizing the microstructure of the carbon nanostructures [15]. Figure 6 shows the Raman spectra of the as-deposited carbon nanostructures after different flame-deposition time lengths. The peak assignments of the Raman spectra are summarized in Table 1. It is well known that the two peaks located at approximately 1350 and 1580 cm-1 are called as D-band and G-band of graphite, respectively. The D band is attributed to the disorder-induced vibration of C-C bond, and the G band corresponds to the C-C vibration of the carbon material with a sp2 orbital structure. Therefore, the relative band intensity (ID/IG) is related to the graphitic structure of the combustion material [15]. As clearly seen from Table 1, the value of ID/IG is 0.86 and 0.73 for the 30-min sample and the 60-min sample, respectively. This indicates that the as-deposited carbon nanostructures here possess a relatively higher degree of order and graphitization. Moreover, the graphitization degree of the 60-min sample is obviously higher than that of the 30-min sample, which is in good agreement with the analytic results by SEM (Figure 4) and XRD (Figure 5).

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.