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Volume 47, Issue 4
  • ISSN: 0032-1400
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  • oa Platinum Alloys for Shape Memory Applications

  • Authors: By T. Biggs1, M. B. Cortie2, M. J. Witcomb3 and L. A. Cornish4
  • Affiliations: 1 44 Kildonan Crescent, Waterdown, ON, L0R 2H5, Canada; E-mail: [email protected] formerly at Mintek 2 Institute for Nanoscale Technology, University of Technology, Sydney, PO Box 123, Broadway, NSW 2007, Australia formerly at Mintek 3 Electron Microscope Unit, University of the Witwatersrand, Private Bag 3, WITS, 2050, South Africa 4 School of Process and Materials Engineering, University of the Witwatersrand, Private Bag 3, WITS, 2050, South Africa now at the Physical Metallurgy Division, Mintek, Private Bag X3015, Randburg 2125, South Africa
  • Source: Platinum Metals Review, Volume 47, Issue 4, Oct 2003, p. 142 - 156
  • DOI: https://doi.org/10.1595/003214003X474142156
    • Published online: 01 Jan 2003

Abstract

Shape memory alloys (SMAs) are materials that can change their shape at a specific temperature and are used in applications as diverse as sensors, temperature sensitive switches, force actuators, fre-safety valves, orthodontic wires, fasteners, and couplers. The possible advantages offered by platinum-based SMAs involving the metals: iron, aluminium, gallium, titanium, chromium, and vanadium, are considered here and the likely systems upon which such alloys might be based are assessed. It is suggested that the most promising candidate systems are ternary-alloyed variations of the PtAl and PtTi phases, although SMAs based on PtFe have potential for low temperature applications. It appears possible to engineer a shape memory transition in the (Pt, Ni)Ti system anywhere between room temperature and 1000°C, a versatility which is probably unique among all known SMAs.

© Johnson Matthey
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2003-01-01
2024-12-27
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Platinum Alloys for Shape Memory Applications
Platinum Metals Review 47, 142 (2003); https://doi.org/10.1595/003214003X474142156
/content/journals/10.1595/003214003X474142156
/content/journals/10.1595/003214003X474142156
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  • Article Type: Research Article

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