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Surface microstructure of Zr41.25Ti13.75Cu12.5Ni10.0Be22.5, a bulk metallic glass

Published online by Cambridge University Press:  31 January 2011

M.A. LaMadrid ,
S.D. O'Connor ,
A. Peker ,
W.L. Johnson  and
J.D. Baldeschwieler
M.A. LaMadrid
Affiliation:
Division of Engineering and Applied Science, California Institute of Technology, Pasadena, California 91109
S.D. O'Connor
Affiliation:
Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91109
A. Peker
Affiliation:
Division of Engineering and Applied Science, California Institute of Technology, Pasadena, California 91109
W.L. Johnson
Affiliation:
Division of Engineering and Applied Science, California Institute of Technology, Pasadena, California 91109
J.D. Baldeschwieler
Affiliation:
Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91109
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Abstract

The surface of Zr41.25Ti13.75Cu12.5Ni10.0Be22.5, a bulk metallic glass prepared by RF induction melting, has been imaged using atomic force microscopy. The untreated surfaces were very smooth; features were no higher than 3 nm over a 10 × 10 μm region, comparable to many polished surfaces. Two types of microstructure were also observed; periodic striations forming either a striped or a checkered structure were present, with wavelengths between 1 and 2 μm, and amplitude of approximately 2 nm; in other cases, “cracked mud”-like patterns were observed. These microstructures could be related to strain-induced surface roughening; preliminary calculations are presented that are consistent with this hypothesis.

Type
Articles
Information
Journal of Materials Research , Volume 11 , Issue 6 , June 1996 , pp. 1494 - 1499
Copyright
Copyright © Materials Research Society 1996

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