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Mechanical properties of HfB2 reinforced B4C matrix ceramics processed by in situ reaction of B4C, HfO2 and CNT

  • K. Sairam
  • T. S. R. Ch. Murthy
  • J. K. Sonber
  • C. Subramanian
  • R. C. Hubli
  • A. K. Suri
Chapter

Abstract

Boron carbide and its composites find a wide range of applications such as armour material, p-type semiconductor in electronic industries, as a neutron detectors and absorbers in nuclear industry and as a thermo-electric device for space applications, due to their unique physical, thermal and thermo-electric properties. This work discusses about the development of B4C-HfB2 ceramic-ceramic composites. Nearly full dense B4C-HfB2 ceramic composites were fabricated by in situ processing using B4C, HfO2 and CNT, as starting materials. The effect of HfO2 and CNT content on microstructure and mechanical properties of B4C composite has been investigated. Additions of 2.5–30 wt% HfO2 and 0.2–2.5 wt% CNT resulted in improvement in density and fracture toughness of the material. On increasing the additive contents, the fracture toughness of the composite increased more than twice that of monolithic B4C, whereas hardness decreased by about 12 %. Elastic Modulus of the composites was measured to be in the range of 570–625 GPa. Crack deflection observed in the composites was found to be the major toughening mechanism due to the existence of residual thermal stress. The maximum value of hardness, fracture toughness and elastic modulus were 36 GPa, 6.6 MPa m1/2, and 625 GPa, respectively.

Keywords

B4CNT Hfb2 Composite Mechanical properties 

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References

  1. 1.
    Thevenot F (1990) Boron carbide – a comprehensive review. J Eur Ceram Soc 6: 202-225Google Scholar
  2. 2.
    Suri AK, Subramanian C, Sonber JK, Murthy TSRCh (2010) Synthesis and consolidation of boron carbide: a review. Int Mater Rev 55[1]: 4-38Google Scholar
  3. 3.
    Angers R, Beauvy M (1983) Hot-Pressing of Boron Carbide. Ceram Int 10[2]: 49-55Google Scholar
  4. 4.
    Kuzenkova MA, Kislyi PS, Grabchuk BL, Bodnaruk NI (1979) The structure and properties of sintered boron carbide. J Less Comm Met 67[1]: 217-223Google Scholar
  5. 5.
    Dole SL, Prochazka S, Doremus RH (1989) Microstructural coarsening during sintering of boron carbide. J Am Ceram Soc 72[6]: 958-966Google Scholar
  6. 6.
    Zhang F, Fu Z, Zhang J, Wang H, Wang W, Wang Y (2009) Reinforcement of B4C Ceramics with Multi-walled Carbon Nanotubes. Adv Mater Res 66: 41-44Google Scholar
  7. 7.
    Kim HW, Koh YH, Kim HE (2000) Reaction sintering and mechanical properties of B4C with addition of ZrO2. J Mater Res 15[11]: 2431-2436Google Scholar
  8. 8.
    Levin L, Frage N, Dariel MP (1999) The Effect of Ti and TiO2 Additions on the Pressureless Sintering of B4C. Met Mater Trans A 30A: 3201-3210Google Scholar
  9. 9.
    Goldstein A, Geffen Y, Goldenberg A (2000) Boron Carbide-Zirconium Boride In Situ Composites by the Reactive Pressureless Sintering of Boron Carbide-Zirconia Mixtures. J Am Ceram Soc 84[3]: 642-644Google Scholar
  10. 10.
    Huang SG, Vanmeensel K, Van der Biest O, Vleugels J (2011) In situ synthesis and densification of submicrometer-grained B4C-TiB2 composites by pulsed electric current sintering. J Eur Ceram Soc 31: 637-644Google Scholar
  11. 11.
    Skorokhod V, Krstic VD (2000) High strength-high toughness B4C-TiB2 composites. J Mater Sci Lett 19: 237-239Google Scholar
  12. 12.
    Yue XY, Zhao SM, Lu P, Chang Q, Ru HQ (2010) Synthesis and properties of hot pressed B4C-TiB2 ceramic composite. Mat Sci Eng A A527: 7215-7219Google Scholar
  13. 13.
    Grigor’ev ON, Koval’chuk VV, Zaporozhets OI, Bega ND, Galanov BA, Prilutskii ÉV, Kotenko VA, Kutran’ TN, Dordienko NA (2006) Synthesis and physicomechanical properties of B4C-VB2 composites. Powder Mett Metal Ceram 45[1-2]: 47-58Google Scholar
  14. 14.
    Subramanian C, Roy TK, Murthy TSRCh, Sengupta P, Kale GB, Krishnaiah MV, Suri AK (2008) Effect of zirconia addition on Pressureless sintering of boron carbide. Ceram Int 34: 1543-1549Google Scholar
  15. 15.
    Goldstein A, Yeshurun Y, Goldenberg A (2007) B4C/metal boride composites derived from B4C/metal oxide mixtures. J Eur Ceram Soc 27[2-3]: 695-700Google Scholar
  16. 16.
    Sairam K, Sonber JK, Murthy TSRCh, Subramanian C, Hubli RC, Suri AK (2012) Development of B4C-HfB2 composites by reaction hot pressing. Int J Refr Met Hard Mater 35: 32-40Google Scholar
  17. 17.
    Yamaha S, Hirao K, Yamauchi Y, Kanzaki S (2003) High strength B4C–TiB2 composites fabricated by reaction hot-pressing. J Eur Ceram Soc 23: 1123-1130Google Scholar
  18. 18.
    Radev D (2010) Pressureless Sintering of Boron Carbide-based Superhard Materials. Sol State Phenom 159: 145-148Google Scholar
  19. 19.
    Gosset D, Provot D (2001) Boron carbide as a potential inert matrix: an evaluation. Prog Nucl Energy 38[3-4]: 263-266Google Scholar
  20. 20.
    Barin I (1995) Thermochemical Data of Pure Substances. 3rd edition, Wiley-VCH., WeinheimGoogle Scholar
  21. 21.
    Antis GR, Chantikul P, Lawn BR, Marshall DB (1981) A Critical Evaluation of Indentation Techniques for Measuring Fracture Toughness: I, Direct Crack Measurements. J Am Ceram Soc 64: 533-538Google Scholar
  22. 22.
    Telle R, Petzow G (1988) Strengthening and toughening of boride and carbide hard material composites. Mater Sci Eng A 105/106: 97–104Google Scholar
  23. 23.
    Wie J, Jiang B, Li Y, Xu C, Wu D, Wei B (2002) Straight boron carbide nanorods prepared from carbon nanotubes. J Mater Chem 12: 3121-3124Google Scholar
  24. 24.
    Lee H, Speyer RF (2003) Pressureless Sintering of Boron Carbide. J Am Ceram Soc 86[9] 1468-1473Google Scholar
  25. 25.
    Sigl SL (1998) Processing and Mechanical Properties of Boron Carbide Sintered with TiC. J Eur Ceram Soc 18: 1521-1529Google Scholar
  26. 26.
    Yin BY, Wang LS (2003) Studies on activated sintering of jet milled B4C powders. Atom Energy Sci Technol 37 (Suppl.): 70-72, 76Google Scholar
  27. 27.
    Zorzi JE, Perottoni CA, da Jornada JAH (2005) Hardness and wear resistance of B4C ceramics prepared with several additives. Mater Lett 59: 2931-2935Google Scholar
  28. 28.
    Taya M, Hayashi S, Kobayashi AS, Yoon HS (1990) Toughening of a Particulate-Reinforced Ceramic-Matrix Composite by Thermal Residual Stress. J Am Ceram Soc 73[5]: 1382-1391Google Scholar
  29. 29.
    Weiderhorn SM (1984) Brittle fracture and toughening mechanisms in ceramics. Ann Rev Mater Sci 14: 373-403Google Scholar
  30. 30.
    Zhou JP, Gong QM, Yuan KY, Wu JJ, Chen YF, Li CS, Lian Ji (2009) The effects of multiwalled carbon nanotubes on the hot-pressed 3 mol% yttria stabilized zirconia ceramics. Mater Sci Engg A 520: 153-157Google Scholar

Copyright information

© Springer International Publishing Switzerland 2014

Authors and Affiliations

  • K. Sairam
    • 1
  • T. S. R. Ch. Murthy
    • 1
  • J. K. Sonber
    • 1
  • C. Subramanian
    • 1
  • R. C. Hubli
    • 1
  • A. K. Suri
    • 1
  1. 1.Materials GroupBhabha Atomic Research CentreMumbaiIndia

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