The Authors

Dr Andy Watson is a Senior Research Fellow in the Institute for Materials Research at the University of Leeds. He has worked in experimental and computational thermodynamics for many years and has interests in lead-free solders and intermetallic phases as well as pgm alloys.

Rainer Süss is Section Head of the Advanced Metals Group in the Advanced Metals Division at Mintek, as well as the co-ordinator of the Strong Metallic Alloys Focus Area in the DST/NRF Centre of Excellence for Strong Materials. His research interests include phase diagrams, platinum alloys and jewellery alloys.

Lesley Cornish is the Director of the DST/NRF Centre of Excellence in Strong Materials and an Honorary Professor at the University of the Witwatersrand, South Africa. She is associated with Mintek. Her research interests include phase diagrams, platinum alloys and intermetallic compounds.

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Building a Thermodynamic Database for Platinum-Based Superalloys: Part II

A. Watson

Institute for Materials Research, University of Leeds, Leeds LS2 9JT, U.K.;

R. Süss

Advanced Materials Division, Mintek, Private Bag X3015, Randburg 2125, South Africa
DST/NRF Centre of Excellence in Strong Materials, Johannesburg 2050, South Africa
and School of Chemical and Materials Engineering, University of the Witwatersrand, Private Bag 3, Johannesburg 2050, South Africa;

L. A. Cornish

Advanced Materials Division, Mintek, Private Bag X3015, Randburg 2125, South Africa
DST/NRF Centre of Excellence in Strong Materials, Johannesburg 2050, South Africa
and School of Chemical and Materials Engineering, University of the Witwatersrand, Private Bag 3, Johannesburg 2050, South Africa;

Platinum Metals Review

Volume 51 Issue 4 October 2007 Pages 189-198
DOI 10.1595/147106707X232893

Article Synopsis

Work is being done at Mintek, the University of Leeds and the University of Bayreuth to build up a platinum-aluminium-chromium-ruthenium (Pt-Al-Cr-Ru) database for the prediction of phase diagrams for further alloy development by obtaining good thermodynamic descriptions of all of the possible phases in the system. Binary descriptions were combined, allowing extrapolation into the ternary systems, and experimental phase equilibrium data were compared with calculated results. Very good agreement was obtained for the Pt-Al-Ru system, as described in Part I of this series of papers (1). This paper (Part II) addresses the Pt-Cr-Ru system, with equally encouraging results. The final paper in the series (Part III, to be published in a future issue of Platinum Metals Review) will deal with work on the platinum-aluminium-chromium-nickel (Pt-Al-Cr-Ni) database at the University of Bayreuth. The Pt-Al-Cr-Ru and Pt-Al-Cr-Ni databases will eventually be merged.

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