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New evidence for a pressure-induced phase transformation during the indentation of silicon

Published online by Cambridge University Press:  31 January 2011

G.M. Pharr ,
W.C. Oliver  and
D.S. Harding
G.M. Pharr
Affiliation:
Department of Materials Science, Rice University, P.O. Box 1892, Houston, Texas 77251
W.C. Oliver
Affiliation:
Metals and Ceramics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831
D.S. Harding
Affiliation:
Department of Materials Science, Rice University, P.O. Box 1892, Houston, Texas 77251
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Abstract

Scanning electron micrographs of indents in (111) silicon reveal that a thin layer of material immediately adjacent to the indenter is plastically extruded. The fact that the material can be deformed in this way indicates that it has metallic-like mechanical properties. This is presented as new evidence that a pressure-induced phase transformation to the metallic state occurs during the indentation of silicon.

Type
Materials Communications
Information
Journal of Materials Research , Volume 6 , Issue 6 , June 1991 , pp. 1129 - 1130
Copyright
Copyright © Materials Research Society 1991

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