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Preparation of Synthetic Quartz Aggregates under Pressure

Published online by Cambridge University Press:  15 February 2011

F. C. Luan  and
M. S. Paterson
F. C. Luan
Affiliation:
Now at Applied Research & Development, Computer Power Ltd., P.O. Box 7126, Canberra Mail Centre, ACT 2610, Australia
M. S. Paterson
Affiliation:
Research School of Earth Sciences, Australian National University, Canberra
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Abstract

In 1965 Griggs and Blacic [1,2] proposed that there is a “hydrolytic weakening” process in quartz and silicates whereby the breaking of Si-O bonds, involved in the movement of dislocations, is facilitated by the presence of water. This proposal aimed to explain the observed dramatic weakening of quartz crystals when they are exposed to water in tests at high temperature, as well as the observed strong contrast in creep strength between dry natural quartz crystals and rapidly-grown synthetic quartz crystals containing traces of water. Such a “hydrolytic” process may also underlie the observed effects of water in accelerating other phenomena such as self-diffusion of oxygen in quartz, aluminium-silicon ordering in feldspars, slow crack propagation in silicates, and recrystallization in quartz. A review of this field is given in Reference 3.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 251: Symposium S – Pressure Effects on Materials Processing and Design , 1991 , 139
Copyright
Copyright © Materials Research Society 1992

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References

REFERENCES

1. Griggs, D.T. and Blacic, J.D., Science 147, 292 (1965).Google Scholar
2. Griggs, D.T., Geophys. J.R. astr. Soc. 14, 19 (1967).Google Scholar
3. Paterson, M.S., in Rheology of Solids and of the Earth, edited by Karato, S. and Toriumi, M. (Oxford University Press, Oxford, 1989), pp. 107–142.Google Scholar
4. Cordier, P., Boulogne, B. and Doukhan, J.-C., Bull. Minéral. 111, 113 (1988).Google Scholar
5. Luan, F.C. and Paterson, M.S., J. Geophys. Res. (in press, 1991).Google Scholar