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Transformation probability of graphite-diamond assisted by nonmetallic catalysts at high pressure and high temperature

Published online by Cambridge University Press:  31 January 2011

Liling Sun ,
Qi Wu ,
Yafei Zhang  and
Wenkui Wang
Liling Sun
Affiliation:
Institute of Physics, Chinese Academy of Sciences, Beijing 100080, People's Republic of China
Qi Wu
Affiliation:
Institute of Physics, Chinese Academy of Sciences, Beijing 100080, People's Republic of China
Yafei Zhang
Affiliation:
Department of Physics, Lanzhou University, Lanzhou, 730000, People's Republic of China
Wenkui Wang
Affiliation:
Institute of Physics, Chinese Academy of Sciences, Beijing 100080, People's Republic of China
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Abstract

The tendency of graphite-diamond transformation assisted by nonmetallic catalysts of carbonates, sulfates, or phosphorus under high pressure and high temperature has been investigated by calculating the activation energy and transformation probability of the carbon atoms over a potential barrier. It was found that the activation energy is highly sensitive to the catalyst chosen. The value of activation energy in the systems of graphite-carbonates, graphite-phosphorus, and graphite-sulfate are 130.71 × 103, 206.03 × 103, and 221 × 103 J/mol, respectively. If fd stands for the probability of the transformation from graphite to diamond, the probability sequence of graphite-diamond transformation in different systems was put forward: fd(gr.-carbonate) > fd(gr.-phosphorus). fd(gr.-sulfate).

Type
Articles
Information
Journal of Materials Research , Volume 14 , Issue 3 , March 1999 , pp. 631 - 633
Copyright
Copyright © Materials Research Society 1999

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References

REFERENCES

1.Bundy, F. P., Hall, H. T., Strong, H. M., and Wentort, R. H. Jr, Nature (London) 176, 51 (1955).CrossRefGoogle Scholar
2.Liander, H. and Lundlad, E., Arkiv Kemi 16, 139 (1960).Google Scholar
3.DeCarli, P. S. and Jamieson, J. C., Science 133, 182 (1961).CrossRefGoogle Scholar
4.Bundy, F. P., J. Chem. Phys. 38, 631 (1963).CrossRefGoogle Scholar
5.Bundy, F. P. and Kasper, J. S., J. Chem. Phys. 46, 3437 (1967).CrossRefGoogle Scholar
6.Hanneman, R. E., Strong, H. M., and Bundy, F. P., Science 155, 995 (1967).CrossRefGoogle Scholar
7.Wentorf, R. H. Jr, J. Phys. Chem. 75, 1833 (1971).CrossRefGoogle Scholar
8.Strong, H. M. and Chrenko, R. M., J. Phys. Chem. 75, 1838 (1971).CrossRefGoogle Scholar
9.Bovenkerk, H. P., Bundy, F. P., Hall, H. T., Strong, H. M., and Wentorf, R. H. Jr, Nature (London) 184, 1094 (1959).CrossRefGoogle Scholar
10.Akaishi, M., Kanda, H., and Yamaoka, S., Jpn. J. Appl. Phys. 29, 1172–1174 (1990).CrossRefGoogle Scholar
11.Akaishi, M., Diamond Related Mater. 2, 183–189 (1993).CrossRefGoogle Scholar
12.Yamaoka, S., Akaishi, M., Kanda, H., and Osawa, T., J. Cryst. Growth 125, 375–377 (1992).CrossRefGoogle Scholar
13.Akaishi, M., Kanda, H., and Yamaoka, S., Science 259, 1592–1593 (1993).CrossRefGoogle Scholar
14.Akaishi, M., Kanda, H., and Yamaoka, S., J. Cryst. Growth 104, 578–581 (1990).CrossRefGoogle Scholar
15.Wyllie, P. J., J. Geodynamics 20, 429–4869 (1995).CrossRefGoogle Scholar
16.Schrauder, M. and Navon, O., Geochim. Cosmochim. Acta 58, 761–771 (1994).CrossRefGoogle Scholar
17.Kanda, H., Akaishi, M., and Yamaoka, S., J. Cryst. Growth 106, 471–475 (1990).CrossRefGoogle Scholar
18.Zhang, Y. F., Zhang, F. Q., and Chen, G. H., J. Mater. Res. 9, 2845–2849 (1994).CrossRefGoogle Scholar
19.Berman, R. and Simon, F., Z. Electro. Chem. 59, 333 (1955).Google Scholar
20.Sun, L. L., Decomposition Behavior of Ag2CO3 and Diamond Synthesis assisted by a Decomposition Product of Ag2CO3 under High Pressure and High Temperature, COE Report of NIRIM (National Institute for Research in Inorganic Materials, Japan, 1997).Google Scholar
21.Michau, D., Influence of the Nitrogen Getter on Spontaneous Nucleation of Diamond in Graphite-Phosphorus System at High Pressure and High Temperature, COE Report of NIRIM (National Institute for Research in Inorganic Materials, Japan, 1997).Google Scholar