SiC–TiB2 (10 wt. %) and SiC–TiB2 (10 wt. %)–TaC (5 wt. %) composites are consolidated using spark plasma sintering (SPS) technique at different sintering temperatures (2000 °C and 2100 °C) for 15 min soaking time under 35 MPa pressure. The effects of sintering temperature on densification and mechanical properties of composites have been investigated in detail. SiC–TiB2 and SiC–TiB2–TaC composites sintered at 2100 °C showed high Vickers hardness value, i.e., 27.20 ± 1.23 GPa and 26.40 ± 0.80 GPa, respectively, under 1 kgf (9.81 N) load. Poor fracture toughness {2.28 MPa(m)1/2 at 1 kgf (9.81 N) load} of monolithic silicon carbide (SiC) sintered at 2100 °C is improved with addition of titanium diboride (TiB2) and tantalum carbide (TaC) as secondary phases. Scratch resistance of SiC–TiB2 and SiC–TiB2–TaC composites show coefficient of friction value below 0.40 and 0.50 under 5 N and 10 N loads, respectively. SiC–TiB2 and SiC–TiB2–TaC composites show constant thermal conductivity response above 810 °C and 603 °C in the range of 48.70–47.15 W/m K and 60.35–60.41 W/m K, respectively.
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January 2018
Research-Article
Mechanical and Tribological Properties of Spark Plasma Sintered SiC–TiB2 and SiC–TiB2–TaC Composites: Effects of Sintering Temperatures (2000 °C and 2100 °C)
H. K. Pant,
H. K. Pant
Tribology Laboratory,
National Institute of Technology Srinagar,
Hazrtabal,
Srinagar 190006, Jammu and Kashmir, India
National Institute of Technology Srinagar,
Hazrtabal,
Srinagar 190006, Jammu and Kashmir, India
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D. Debnath,
D. Debnath
Non-Oxide Ceramic Laboratory,
Central Glass and Ceramics Research Institute,
Kolkata 700032, India
Central Glass and Ceramics Research Institute,
Kolkata 700032, India
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S. Chakraborty,
S. Chakraborty
Non-Oxide Ceramic Laboratory,
Central Glass and Ceramics Research Institute,
Kolkata 700032, India
Central Glass and Ceramics Research Institute,
Kolkata 700032, India
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M. F. Wani,
M. F. Wani
Tribology Laboratory,
National Institute of Technology Srinagar,
Hazrtabal,
Srinagar 190006, Jammu and Kashmir, India
e-mail: mfwani@nitsri.net
National Institute of Technology Srinagar,
Hazrtabal,
Srinagar 190006, Jammu and Kashmir, India
e-mail: mfwani@nitsri.net
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P. K. Das
P. K. Das
Non-Oxide Ceramic Laboratory,
Central Glass and Ceramics Research Institute,
Kolkata 700032, India
Central Glass and Ceramics Research Institute,
Kolkata 700032, India
Search for other works by this author on:
H. K. Pant
Tribology Laboratory,
National Institute of Technology Srinagar,
Hazrtabal,
Srinagar 190006, Jammu and Kashmir, India
National Institute of Technology Srinagar,
Hazrtabal,
Srinagar 190006, Jammu and Kashmir, India
D. Debnath
Non-Oxide Ceramic Laboratory,
Central Glass and Ceramics Research Institute,
Kolkata 700032, India
Central Glass and Ceramics Research Institute,
Kolkata 700032, India
S. Chakraborty
Non-Oxide Ceramic Laboratory,
Central Glass and Ceramics Research Institute,
Kolkata 700032, India
Central Glass and Ceramics Research Institute,
Kolkata 700032, India
M. F. Wani
Tribology Laboratory,
National Institute of Technology Srinagar,
Hazrtabal,
Srinagar 190006, Jammu and Kashmir, India
e-mail: mfwani@nitsri.net
National Institute of Technology Srinagar,
Hazrtabal,
Srinagar 190006, Jammu and Kashmir, India
e-mail: mfwani@nitsri.net
P. K. Das
Non-Oxide Ceramic Laboratory,
Central Glass and Ceramics Research Institute,
Kolkata 700032, India
Central Glass and Ceramics Research Institute,
Kolkata 700032, India
1Corresponding author.
Contributed by the Tribology Division of ASME for publication in the JOURNAL OF TRIBOLOGY. Manuscript received December 16, 2016; final manuscript received May 13, 2017; published online August 22, 2017. Assoc. Editor: Nuria Espallargas.
J. Tribol. Jan 2018, 140(1): 011608 (10 pages)
Published Online: August 22, 2017
Article history
Received:
December 16, 2016
Revised:
May 13, 2017
Citation
Pant, H. K., Debnath, D., Chakraborty, S., Wani, M. F., and Das, P. K. (August 22, 2017). "Mechanical and Tribological Properties of Spark Plasma Sintered SiC–TiB2 and SiC–TiB2–TaC Composites: Effects of Sintering Temperatures (2000 °C and 2100 °C)." ASME. J. Tribol. January 2018; 140(1): 011608. https://doi.org/10.1115/1.4037068
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