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Investigation of TaC–TaB2 ceramic composites

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Abstract

The TaC–TaB2 composition was sintered by spark plasma (SPS) at 1900–2100°C and applied pressure of 30 MPa. TaC and 2–3 wt% B4C were used as starting powders. Densification process, phase evolution, microstructure and the mechanical properties of the composites were investigated. The results indicated that the TaC–TaB2 composition could be SPS to 97% of theoretical density in 10 min at 2100°C. Addition of B4C leads to an increase in the density sample from 76 to 97%. B4C nano-powder resists grain growth even at high temperature 2100°C. The formation of TaB2/carbon at TaC grain boundaries helps in pinning the grain boundary and inhibiting grain growth. The phase formation was associated with carbon and boron diffusion from the starting particles B4C to form TaB2 phases. TaC grain sizes decreased with increase in B4C concentration. Samples with 2.0 wt% B4C composition had highest flexure strength up to 520 MPa. The effect of B4C addition on hardness measured by microhardness has been studied. Hardness of samples containing 3.0 wt% B4C was 16.99 GPa.

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References

  1. Liu L, Yea F, Hea X and Zhoua Y 2011 Mater. Chem. Phys. 126 459

    Article  Google Scholar 

  2. Mehdikhani B and Bakhshi S R 2014 J. Optoelectronic Adv. Mater. 16 1311

    Google Scholar 

  3. Wuchina E, Opila E, Opeka M, Fahrenholtz W and Talmy I 2007 Electrochemical Society Interface 16 30

    Google Scholar 

  4. Johnson M, Gasch M and Lawson J W 2008 Am. Inst. Aeronautics Astronautics

  5. Justin J F and Jankowiak A 2011 Onera J. Aerospace Lab 3 1–11

  6. Samonov G V and Petrikina R Y 1970 Phys. Sinter. 2 1

    Google Scholar 

  7. Zhang X, Hilmas G E and Fahrenholtz W G 2008 J. Am. Ceram. Soc. 91 4129

    Article  Google Scholar 

  8. Zhang X, Hilmas G E and Fahrenholtz W G 2007 J. Am. Ceram. Soc. 90 393

    Article  Google Scholar 

  9. Liu J X, Kan Y M and Zhang G J 2010 J. Am. Ceram. Soc. 93 370

    Article  Google Scholar 

  10. Kim B, Woo K, Doh J, Yoon J and Shon I 2009 Ceram. Int. 35 3395

    Article  Google Scholar 

  11. Shen Z, Johnsson M, Zhao Z and Nygren M 2002 J. Am. Ceram. Soc. 85 1921

    Article  Google Scholar 

  12. Sommer M, Schubert W D, Zobetz E and Warbichler P 2002 Int. J. Refract. Metal Hard Mater. 20 41

    Article  Google Scholar 

  13. Khaleghi E, Lin Y S, Meyers M A and Olevsky E A 2010 Scripta Materialia 63 577

    Article  Google Scholar 

  14. Silvestroni L, Bellosi A, Melandri C, Sciti D, Liu J and Zhang G 2011 J. Eur. Ceram. Soc. 31 619

    Article  Google Scholar 

  15. Mehdikhani B and Borhani G H 2014 J. Optoelectronic Adv. Mater. 16 524

    Google Scholar 

  16. Talmy I G, Zaykoski J A and Opeka M M 2010 Eur. Ceram. Soc. 30 2253

    Article  Google Scholar 

Download references

Acknowledgements

We are indebted to material department in Malek-e-Ashtar University of Technology, which supplied the raw materials for the development of this research and to building and construction department of Standard Research Institute for its equipment support.

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Authors and Affiliations

  1. Department of Materials Engineering, Malek-e-Ashtar University of Technology, Isfahan, Iran

    BEHZAD MEHDIKHANI, GHOLAM HOSSEIN BORHANI & SAEED REZA BAKHSHI

  2. Department of Materials Engineering, Malek-e-Ashtar University of Technology, Tehran, Iran

    HAMID REZA BAHARVANDI

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  1. BEHZAD MEHDIKHANI
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  2. GHOLAM HOSSEIN BORHANI
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  3. SAEED REZA BAKHSHI
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  4. HAMID REZA BAHARVANDI
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Correspondence to BEHZAD MEHDIKHANI.

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MEHDIKHANI, B., BORHANI, G.H., BAKHSHI, S.R. et al. Investigation of TaC–TaB2 ceramic composites. Bull Mater Sci 39, 79–84 (2016). https://doi.org/10.1007/s12034-015-1138-y

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  • DOI: https://doi.org/10.1007/s12034-015-1138-y

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