Abstract
The alloy system Au−Ag−Pd−Pt−Sn is described with the help of the thermodynamic software ‘Chemsage’ and a specially modelled dataset. Calculations on the stability of precipitated phases show good agreement with experimental results from hardness tests and metallography and thereby provide a better understanding of the observed material properties. The use of such modelling provides an efficient tool for faster and more direct development of precious metal alloys.
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Dr Bernd Kempf is a scientist in the Research Department of Degussa’s precious metals sector. He studied materials science in Erlangen and then moved to the Max-Planck Institut für Metallforschung in Stuttgart. He received his PhD for studies of the mechanical behaviour and failure mechanisms of high temperature materials. In 1988 he moved to Degussa. His main activities in this Company are in the use of precious metal alloys for technical applications and for dental and jewellery materials.
Prof Dr Siegfried Schmauder has been employed at the Staatliche Materialprüfungsanstalt (MPA), University of Stuttgart, since 1994. He has studied Mathematics and Computer Science and received his PhD in Materials Science in the field of stimulating the mechanical behaviour of materials with complex microstructures at Max-Planck Institut für Metallforschung in Stuttgart in 1989. Since 1995 he has been head of the Department of Ceramics and Composites.
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Kempf, B., Schmauder, S. Thermodynamic modelling of precious metals alloys. Gold Bull 31, 51–57 (1998). https://doi.org/10.1007/BF03214761
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DOI: https://doi.org/10.1007/BF03214761