Skip to main content
SpringerLink
Log in

Access of Gases to the Porosity of Synthetic Graphite at High Temperatures

  • Letter
  • Published:

From Nature

View current issue Submit your manuscript

Abstract

MUCH if not all of the so-called “closed porosity” in various nuclear graphites lies beyond extremely fine entrances, according to recent work at the British Coal Utilisation Research Association. These entrances can be penetrated by certain gases at high temperatures. It follows that the well known1–3 gradual decrease in “closed porosity” that occurs on thermal oxidation of graphites in gases can be accounted for by the erosive widening of such entrances. These conclusions are the result of two independent methods for measuring changes in porosity, which have been applied from room temperature to 1,073° K.

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

Similar content being viewed by others

References

  1. Walker, jun., P. L., and Raats, E., J. Phys. Chem., 60, 364 (1956).

    Article  CAS  Google Scholar 

  2. Spalaris, C. N., J. Phys. Chem., 60, 1480 (1956).

    Article  CAS  Google Scholar 

  3. Bond, R. L., Spencer, D. H. T., and Tee, P. A. H., Proc. US/UK Meeting on the Compatibility Problems of Gas-cooled Reactors (Oak Ridge Nat. Lab. Tenn., 1960), 374; USAEC Rep. TID-7597 (Bk. 1) (1961).

    Google Scholar 

  4. Maggs, F. A. P., Schwabe, P. H., and Williams, J. H., Nature, 186, 956 (1960).

    Article  ADS  CAS  Google Scholar 

  5. Kini, K. A., and Stacy, W. O., Carbon, 1, 17 (1963).

    Article  CAS  Google Scholar 

  6. Napier, B. A., and Spencer, D. H. T., Proc. Second Indust. Carbon and Graphite Conf., 418 (Soc. Chem. Ind., 1966).

    Google Scholar 

  7. Napier, B. A., and Spencer, D. H. T., J. Sci. Instrum., 44, 568 (1967).

    Article  ADS  CAS  Google Scholar 

  8. Asher, R. C., Proc. US/UK Meeting on the Compatibility Problems of Gas-cooled Reactors (Oak Ridge Nat. Lab., Tenn., 1960), 504; USAEC Rep. TID-7597 (Bk. 2) (1961).

    Google Scholar 

  9. Kipling, J. J., Sherwood, J. N., Shooter, P. V., Thompson, N. R., and Young, R. N., Carbon, 4, 5 (1966).

    Article  CAS  Google Scholar 

  10. Nandi, S. P., Ramadass, V., and Walker, jun., P. L., Carbon, 2, 199 (1964).

    Article  CAS  Google Scholar 

  11. Walker, jun., P. L., Austin, L. G., and Nandi, S. P., Chemistry and Physics of Carbon (edit. by Walker, jun., P. L.), 2, 323–326 (Marcel Dekker, Inc., New York, 1966).

    Google Scholar 

  12. Redmond, J. P., and Walker, jun., P. L., J. Phys. Chem., 64, 1093 (1960).

    Article  CAS  Google Scholar 

Download references

Author information

Authors and Affiliations

  1. British Coal Utilisation Research Association, Leatherhead, Surrey

    B. A. NAPIER & D. H. T. SPENCER

Authors
  1. B. A. NAPIER
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. D. H. T. SPENCER
    View author publications

    You can also search for this author in PubMed Google Scholar

Rights and permissions

Reprints and permissions

About this article

Cite this article

NAPIER, B., SPENCER, D. Access of Gases to the Porosity of Synthetic Graphite at High Temperatures. Nature 218, 948–949 (1968). https://doi.org/10.1038/218948a0

Download citation

  • Received:

  • Issue Date:

  • DOI: https://doi.org/10.1038/218948a0

  • Springer Nature Limited

Search

Navigation