Synthesis of tantalum carbide from multiwall carbon nanotubes in a molten salt medium

CUI Zheng-wei; LI Xuan-ke; CONG Ye; DONG Zhi-jun; YUAN Guan-ming; ZHANG Jiang

doi:10.1016/S1872-5805(17)60117-3

Volume 32 Issue 3

Turn off MathJax

Article Contents

Article Navigation > New Carbon Mater. > 2017 > 32(3): 205-212

CUI Zheng-wei, LI Xuan-ke, CONG Ye, DONG Zhi-jun, YUAN Guan-ming, ZHANG Jiang. Synthesis of tantalum carbide from multiwall carbon nanotubes in a molten salt medium. New Carbon Mater., 2017, 32(3): 205-212. doi: 10.1016/S1872-5805(17)60117-3

Citation:

CUI Zheng-wei, LI Xuan-ke, CONG Ye, DONG Zhi-jun, YUAN Guan-ming, ZHANG Jiang. Synthesis of tantalum carbide from multiwall carbon nanotubes in a molten salt medium. New Carbon Mater., 2017, 32(3): 205-212. doi: 10.1016/S1872-5805(17)60117-3

Citation:

PDF( 4810 KB)

Synthesis of tantalum carbide from multiwall carbon nanotubes in a molten salt medium

doi: 10.1016/S1872-5805(17)60117-3

1.
The State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan 430081, China;
2.
The Hubei Province Key Laboratory of Coal Conversion and New Carbon Materials, Wuhan University of Science and Technology, Wuhan 430081, China

Funds: National Natural Science Foundation of China (50972110,51472186);Hubei Provincial Natural Science Foundation of China (2009CDA036);Scientific Research Foundation for the Returned Overseas Chinese Scholars,State Education Ministry.

Received Date: 2017-03-20
Accepted Date: 2017-06-28
Rev Recd Date: 2017-06-08
Publish Date: 2017-06-28

Abstract

Abstract

Tantalum carbide (TaC) nanofibers and coatings were synthesized using multiwall carbon nanotubes (MWCNTs) with different structures as templates and the carbon source in a KCl-LiCl molten salt mixture (41.2/58.8 mol/mol).The TaC and MWCNTs were characterized by scanning electron microscopy,transmission electron microscopy,X-ray diffraction and selected area electron diffraction.Results indicate that the microstructure of the MWCNTs has a distinct influence on the formation of a TaC coating on the MWCNTs.MWCNTs heat-treated at 2 900℃ have a higher crystallinity and are harder to react with Ta to form TaC than those without the heat-treatment.The formation of TaC nanofibers or TaC coatings on MWCNTs is dependent on the molar ratio of tantalum to carbon nanotubes.The morphology of the polycrystalline cubic TaC nanofibers and the TaC coating is similar to that of MWCNTs.The reaction time and temperature have a great influence on the conversion of carbon to TaC and its crystallite size.
- Carbon nanotubes,
- Tantalum Carbide,
- Carbide coatings

FullText(HTML)

References(25)

References

Service R. Superstrong nanotubes show they are smart, too[J]. Science, 1998, 281(5379):940-942.

Chen X, Xia J, Peng J, et al. Carbon-nanotube metal-matrix composites prepared by electroless plating[J]. Composites Science and Technology, 2000, 60(2):301-306.

Seeger T, Redlich P, Grobert N, et al. SiO_X-coating of carbon nanotubes at room temperature[J]. Chemical physics letters, 2001, 339(1):41-46.

Morisada Y, Miyamoto Y, Takaura Y, et al. Mechanical properties of SiC composites incorporating SiC-coated multi-walled carbon nanotubes[J]. International Journal of Refractory Metals and Hard Materials, 2007, 25(4):322-327.

Wang F, Arai S, Endo M. The preparation of multi-walled carbon nanotubes with a Ni-P coating by an electroless deposition process[J]. Carbon, 2005, 43(8):1716-1721.

Ci L, Ryu Z, Jin-Phillipp N Y, et al. Investigation of the interfacial reaction between multi-walled carbon nanotubes and aluminum[J]. Acta Materialia, 2006, 54(20):5367-5375.

Zhong Z, Liu B, Sun L, et al. Dispersing and coating of transition metals Co, Fe and Ni on carbon materials[J]. Chemical physics letters, 2002, 362(1):135-143.

Chan J Y, Kauzlarich S M. Rare-earth halides as fluxes for the synthesis of tantalum and niobium carbide[J]. Chemistry of materials, 1997, 9(2):531-534.

Storms E K. The Refractory Carbides[M]. Academic Press New York, 1967.

Baklanova N I, Zima T M, Utkin A V, et al. Microstructure of TaC coatings on carbon fibers[J]. Inorg Mater, 2011, 47(7):728-732.

Chen Y J, Li J B, Wei Q M, et al. Preparation and growth mechanism of TaC_x whiskers[J]. Journal of Crystal Growth, 2001, 224(3-4):244-250.

Khyzhun O Y. XPS, XES, and XAS studies of the electronic structure of substoichiometric cubic TaC_x and hexagonal Ta₂C_y carbides[J]. Journal of alloys and compounds, 1997, 259(1):47-58.

Dai H, Wong E W, Lu Y Z, et al. Synthesis and characterization of carbide nanorods[J]. Nature, 1995, 375(6534):769-772.

Klabunde K J, Richards R. Nanoscale Materials in Chemistry[M]. Wiley Online Library, 2001.

Chen Z, Xiong X, Huang B, et al. Phase composition and morphology of TaC coating on carbon fibers by chemical vapor infiltration[J]. Thin Solid Films, 2008, 516(23):8248-8254.

Chen Z, Xiong X. Microstructure, mechanical properties and oxidation behavior of carbon fiber reinforced PyC/C-TaC/PyC layered-structure ceramic matrix composites prepared by chemical vapor infiltration[J]. Materials Chemistry and Physics, 2013, 141(2-3):613-619.

Bakshi S R, Musaramthota V, Virzi D A, et al. Spark plasma sintered tantalum carbide-carbon nanotube composite:Effect of pressure, carbon nanotube length and dispersion technique on microstructure and mechanical properties[J]. Materials Science and Engineering:A, 2011, 528(6):2538-2547.

Nieto A, Kumar A, Lahiri D, et al. Oxidation behavior of graphene nanoplatelet reinforced tantalum carbide composites in high temperature plasma flow[J]. Carbon, 2014, 67(0):398-408.

Li X, Westwood A, Brown A, et al. A convenient, general synthesis of carbide nanofibres via templated reactions on carbon nanotubes in molten salt media[J]. Carbon, 2009, 47(1):201-208.

Li X, Dong Z, Westwood A, et al. Preparation of a titanium carbide coating on carbon fibre using a molten salt method[J]. Carbon, 2008, 46(2):305-309.

Dong Z J, Li X K, Yuan G M, et al. Fabrication and oxidation resistance of titanium carbide-coated carbon fibres by reacting titanium hydride with carbon fibres in molten salts[J]. Thin Solid Films, 2009, 517(11):3248-3252.

Dong Z J, Li X K, Yuan G M, et al. Fabrication of protective tantalum carbide coatings on carbon fibers using a molten salt method[J]. Applied Surface Science, 2008, 254(18):5936-5940.

Li X, Yuan G, Westwood A, et al. The preparation and CVD densification of multi-walled carbon nanotube felt synthesized by a catalytic CVD method[J]. Chemical Vapor Deposition, 2008, 14(1-2):40-45.

Li X, Yuan G, Brown A, et al. The removal of encapsulated catalyst particles from carbon nanotubes using molten salts[J]. Carbon, 2006, 44(9):1699-1705.

Ci L, Wei J, Wei B, et al. Carbon nanofibers and single-walled carbon nanotubes prepared by the floating catalyst method[J]. Carbon, 2001, 39(3):329-335.

Relative Articles

Supplements(0)

Cited By

Proportional views