Skip to main content
SpringerLink
Log in

Role of boron carbide in carbothermic formation of hexagonal boron nitride

  • Published:
Journal of Materials Science Aims and scope Submit manuscript

Abstract

Formation of hexagonal boron nitride by carbothermic reduction of boric oxide under nitrogen atmosphere at 1500 °C was investigated. Experiments were performed for durations in the range of 15 min to 3 h. Reaction products were subjected to powder X-ray diffraction analysis, chemical analysis and were examined by scanning electron microscope. Formation of hexagonal boron nitride was found to be complete in 3 h with most forming in the initial 2 h. Boron carbide was found to exist in the reaction products of the experiments in which hexagonal boron nitride formation was not complete. The aim of this study was to investigate the role of boron carbide in the carbothermic production of hexagonal boron nitride. For this purpose, conversion reaction of boron carbide into hexagonal boron nitride was studied. Boron carbide used in these experiments was produced in the same conditions that hexagonal boron nitride was formed, but under argon atmosphere. It was found that formation of hexagonal boron nitride from boron carbide—boric oxide mixtures was slower than activated carbon—boric oxide mixtures. It was concluded that boron carbide is not a necessary intermediate product in the carbothermic production of hexagonal boron nitride.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Fig. 1
Fig. 2
Fig. 3
Fig. 4
Fig. 5
Fig. 6
Fig. 7
Fig. 8
Fig. 9

Similar content being viewed by others

References

  1. Haubner R, Wilhelm M, Weissenbacher R, Lux B (2002) Boron nitrides – properties, synthesis and applications. Springer-Verlag, Berlin Heidelberg, p 14

    Google Scholar 

  2. The Economy of Boron (2002) Roskill information services, London, p 250

  3. Bartnitskaya TS, Ya Kosolapova T, Kurdyumov AV, Oleinik GS, Bilyankevich AN (1986) J Less-Common Met 117:253

    Article  CAS  Google Scholar 

  4. Yoon SJ, Jha A (1996) J Mater Sci 31:2265

    Article  CAS  Google Scholar 

  5. Pikalov SN (1988) Powder Metall Met C+ 27:404

    Google Scholar 

  6. Aydoğdu A, Sevinç N (2003) J Eur Ceram Soc 23:3153

    Article  Google Scholar 

  7. Cullity BD, Stock SR (2001) Elements of X-ray diffraction. Prentice Hall, New Jersey, p 169

    Google Scholar 

  8. Sinha A, Mahata T, Sharma BP (2002) J Nucl Mater 301:165

    Article  CAS  Google Scholar 

Download references

Acknowledgements

This project was supported by the State Planning Organization of the Turkish Government through the Academic Human Resources Program and by Middle East Technical University grants.

Author information

Authors and Affiliations

  1. Department of Metallurgical and Materials Engineering, Middle East Technical University, Ankara, 06531, Turkey

    H. E. Çamurlu, N. Sevinç & Y. Topkaya

Authors
  1. H. E. Çamurlu
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. N. Sevinç
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. Y. Topkaya
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding author

Correspondence to N. Sevinç.

Rights and permissions

Reprints and permissions

About this article

Cite this article

Çamurlu, H.E., Sevinç, N. & Topkaya, Y. Role of boron carbide in carbothermic formation of hexagonal boron nitride. J Mater Sci 41, 4921–4927 (2006). https://doi.org/10.1007/s10853-006-0339-6

Download citation

  • Received:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s10853-006-0339-6

Keywords

Search

Navigation