Fatigue and corrosion of a Pd-based bulk metallic glass in various environments
Abstract
Bulk metallic glasses (BMGs) possess attractive properties for biomedical applications, including high strength, hardness and corrosion resistance, and low elastic modulus. In this study, we conduct rotating beam fatigue tests on Pd_(43)Ni_(10)Cu_(27)P_(20) bulk metallic glass in air and Eagle's medium (EM) and measure the corrosive resistance of the alloy by submersion in acidic and basic electrolytes. Fatigue results are compared to those of commonly used biometals in EM. Rotating beam fatigue tests conducted in air and in Eagle's medium show no deterioration in fatigue properties in this potentially corrosive environment out to 10^7 cycles. A specimen size effect is revealed when comparing fatigue results to those of a similar alloy of larger minimum dimensions. Corrosion tests show that the alloy is not affected by highly basic (NaOH) or saline (NaCl) solutions, nor in EM, and is affected by chlorinated acidic solutions (HCl) to a lesser extent than other commonly used biometals. Corrosion in HCl initiates with selective leaching of late transition metals, followed by dissolution of Pd.
Additional Information
© 2013 Elsevier B.V. All rights reserved. Received 23 September 2012. Received in revised form 27 April 2013. Accepted 20 May 2013. Available online 28 May 2013. This work was supported by an internal grant from the California State University, Northridge, Research Fellows program and could not have been completed without generous access to the Keck Materials laboratory at the California Institute of Technology, provided by Professor W.L. Johnson.Additional details
- Eprint ID
- 42361
- DOI
- 10.1016/j.msec.2013.05.044
- Resolver ID
- CaltechAUTHORS:20131112-074551312
- California State University Northridge Research Fellows Program
- Created
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2013-11-12Created from EPrint's datestamp field
- Updated
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2021-11-10Created from EPrint's last_modified field