Structural and thermal analysis of in situ synthesized C-WC nanocomposites

Gourav Singla; K. Singh; O. P. Pandey

doi:10.1016/j.ceramint.2013.10.067

Structural and thermal analysis of in situ synthesized C-WC nanocomposites

Gourav Singla, K. Singh, O. P. Pandey

Research output: Contribution to journal › Article › peer-review

26 Scopus citations

Abstract

Nanostructure of carbon encapsulated tungsten carbide (WC@C) has been prepared using reaction between metallic magnesium (Mg), acetone (C ₃H₆O) and tungsten trioxide (WO₃) in an autoclave at 600 C. The resultant powders were characterized by X-ray diffraction (XRD), differential thermal analysis/thermal gravimetric analysis and transmission electron microscopy (TEM). The XRD results showed that the optimization of the reaction time facilitates the reduction as well as carburization of the tungsten source. The apparent activation energy for decarburization of carbide phase was also evaluated from the data of thermal analysis to find the thermal stability of carbide phase. TEM image showed that the synthesized sample consisted of particles with an average size of 35 nm.

Original language	English
Pages (from-to)	5157-5164
Number of pages	8
Journal	Ceramics International
Volume	40
Issue number	4
DOIs	https://doi.org/10.1016/j.ceramint.2013.10.067
State	Published - May 2014
Externally published	Yes

Keywords

Activation energy
Chemical reaction method
Nanoparticles
Tungsten carbide

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10.1016/j.ceramint.2013.10.067

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title = "Structural and thermal analysis of in situ synthesized C-WC nanocomposites",

abstract = "Nanostructure of carbon encapsulated tungsten carbide (WC@C) has been prepared using reaction between metallic magnesium (Mg), acetone (C 3H6O) and tungsten trioxide (WO3) in an autoclave at 600 C. The resultant powders were characterized by X-ray diffraction (XRD), differential thermal analysis/thermal gravimetric analysis and transmission electron microscopy (TEM). The XRD results showed that the optimization of the reaction time facilitates the reduction as well as carburization of the tungsten source. The apparent activation energy for decarburization of carbide phase was also evaluated from the data of thermal analysis to find the thermal stability of carbide phase. TEM image showed that the synthesized sample consisted of particles with an average size of 35 nm.",

keywords = "Activation energy, Chemical reaction method, Nanoparticles, Tungsten carbide",

author = "Gourav Singla and K. Singh and Pandey, {O. P.}",

note = "Funding Information: Authors are grateful to the Department of Science and Technology (DST), New Delhi, India for providing the financial grant vide letter no. SR/S2/CMP-0010/2009 dated 29/12/2009 to carry out this research. The authors would like to thank Sophisticated Analytical Instrumentation Facility(Punjab University, Chandigarh) for powder XRD, Sophisticated Analytical Instrument Facility (IIT Bombay) for FEG-SEM, and Advanced Instrumentation Research Facility (AIRF, JNU, New Delhi, India) for HRTEM facilities. ",

year = "2014",

month = may,

doi = "10.1016/j.ceramint.2013.10.067",

language = "English",

volume = "40",

pages = "5157--5164",

journal = "Ceramics International",

issn = "0272-8842",

publisher = "Elsevier Ltd.",

number = "4",

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T1 - Structural and thermal analysis of in situ synthesized C-WC nanocomposites

AU - Singla, Gourav

AU - Singh, K.

AU - Pandey, O. P.

N1 - Funding Information: Authors are grateful to the Department of Science and Technology (DST), New Delhi, India for providing the financial grant vide letter no. SR/S2/CMP-0010/2009 dated 29/12/2009 to carry out this research. The authors would like to thank Sophisticated Analytical Instrumentation Facility(Punjab University, Chandigarh) for powder XRD, Sophisticated Analytical Instrument Facility (IIT Bombay) for FEG-SEM, and Advanced Instrumentation Research Facility (AIRF, JNU, New Delhi, India) for HRTEM facilities.

PY - 2014/5

Y1 - 2014/5

N2 - Nanostructure of carbon encapsulated tungsten carbide (WC@C) has been prepared using reaction between metallic magnesium (Mg), acetone (C 3H6O) and tungsten trioxide (WO3) in an autoclave at 600 C. The resultant powders were characterized by X-ray diffraction (XRD), differential thermal analysis/thermal gravimetric analysis and transmission electron microscopy (TEM). The XRD results showed that the optimization of the reaction time facilitates the reduction as well as carburization of the tungsten source. The apparent activation energy for decarburization of carbide phase was also evaluated from the data of thermal analysis to find the thermal stability of carbide phase. TEM image showed that the synthesized sample consisted of particles with an average size of 35 nm.

AB - Nanostructure of carbon encapsulated tungsten carbide (WC@C) has been prepared using reaction between metallic magnesium (Mg), acetone (C 3H6O) and tungsten trioxide (WO3) in an autoclave at 600 C. The resultant powders were characterized by X-ray diffraction (XRD), differential thermal analysis/thermal gravimetric analysis and transmission electron microscopy (TEM). The XRD results showed that the optimization of the reaction time facilitates the reduction as well as carburization of the tungsten source. The apparent activation energy for decarburization of carbide phase was also evaluated from the data of thermal analysis to find the thermal stability of carbide phase. TEM image showed that the synthesized sample consisted of particles with an average size of 35 nm.

KW - Activation energy

KW - Chemical reaction method

KW - Nanoparticles

KW - Tungsten carbide

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DO - 10.1016/j.ceramint.2013.10.067

M3 - Article

AN - SCOPUS:84895063576

SN - 0272-8842

VL - 40

SP - 5157

EP - 5164

JO - Ceramics International

JF - Ceramics International

IS - 4

ER -

Structural and thermal analysis of in situ synthesized C-WC nanocomposites

Abstract

Keywords

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