Hostname: page-component-848d4c4894-jbqgn Total loading time: 0 Render date: 2024-07-07T07:20:12.786Z Has data issue: false hasContentIssue false
  • English
  • Français

Transient Nucleation in Co-Zr Metallic Glasses

Published online by Cambridge University Press:  26 February 2011

Uwe Köster  and
Margret Blank-Bewersdorff
Uwe Köster
Affiliation:
Department of Chemical Engineering, University of Dortmund D-4600 Dortmund 50, F. R. Germany
Margret Blank-Bewersdorff
Affiliation:
Department of Chemical Engineering, University of Dortmund D-4600 Dortmund 50, F. R. Germany
Get access

Abstract

Crystallization kinetics and crystal size distributions in Co33Zr67-glasses have been analyzed by quantitative electron microscopy. The polymorphic crystallization of spherical CoZr2 crystals is very suitable reaction for such an analysis. Calculated crystal size distributions at different temperatures were compared to those experimentally revealed. Parameters controlling crystallization were varied within reasonable limits until theoretically calculated and experimentally observed crystal size distributions were in good agreement. It has been found that crystal size distribution can be explained by transient nucleation; the time lag and its temperature dependence can be evaluated. These results are discussed in the light of recent theories on transient nucleation.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 57: Symposium I – Phase Transitions in Condensed Systems--Experiments and Theory , 1985 , 115
Copyright
Copyright © Materials Research Society 1987

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

1 Blanke, H. and Köster, U. (1985). “Proc. 5th Int. Conf. on Rapidly Quenched Metals,” Ed. by Steeb, S. and Warlimont, H., North-Holland, Amsterdam, p. 227.CrossRefGoogle Scholar
2 Greer, A. L. (1982). Acta Met. 30, 171.CrossRefGoogle Scholar
3 Kashchiev, D. (1969). Surf. Sci. 14, 209.CrossRefGoogle Scholar
4 Kelton, K. F., Greer, A. L., and Thompson, L. V. (1983). J. Chem. Phys. 79, 6261.CrossRefGoogle Scholar
5 Köster, U. (1984). Z. Metallkde. 75, 691.Google Scholar
6 Köster, U. (1986). In “Dynamic –Aspects of Structural Change in Liquids and Glasses”, Ann. NY Acad. Sciences, New York, Vol. 484, p. 39.Google Scholar
7 Köster, U. and Blanke, H. (1983). Scripta Met. 17, 495.CrossRefGoogle Scholar
8 Köster, U. and Herold, U. (1982). “Proc. 4th Int. Conf. on Rapidly Quenched Metals,” Ed. by Masumoto, T. and Suzuki, K., Jap. Inst. Metals, Sendai, p. 717.Google Scholar
9 Turnbull, D. (1948). Trans. AIME 175, 774.Google Scholar
10 Underwood, E. E. (1970). “Quantitative Sterology,” Addison-Wesley, Reading, MA. Google Scholar