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Please use this identifier to cite or link to this item: http://hdl.handle.net/10204/1552

Title: Derivation of the liquidus surface projection for the Al-Pt-Ru system from as-cast samples
Authors: Prins, SN
Cornish, LA
Boucher, PS
Keywords: Intermetallics
Scanning electron microscopy
X-ray diffraction
Issue Date: 10-Nov-2005
Publisher: Elsevier Science SA
Citation: Prins, SN, Cornish, LA and Boucher, PS. 2005. Derivation of the liquidus surface projection for the Al-Pt-Ru system from as-cast samples. Journal of Alloys and Compounds, vol 403, 02 January, pp 245-257
Abstract: The liquidus surface projection for the Al-Pt-Ru ternary system has been determined based on the micro-structural characterisation of arc-melted alloys. The liquidus surface is dominated by the similarity to RuAl phase, and slopes down to the Al-rich corner. Two new ternary phases similar to Ru12Pt15Al73 and similar to Ru18Pt28Al64 were observed near the Al-corner. The similarity to Ru12Pt15Al73 phase has a primitive cubic structure, lattice parameter of similar to 0.7721 nm, and is stable to room temperature. The similarity to Ru18Pt28Al64 phase is a high-temperature phase, and decomposes to form similar to Ru12Pt15Al73 and similar to PtAl2. There is a ternary eutectic near 23 at.% Al, 55at.% Pt and 22at.% Ru, whereas most of the other reactions were identified from their microstructures as being peritectic in nature similar to RuAl was found to contain at least 27at.% Pt and the similar to PtAl2 phase exhibited up to 11at.% solubility for ruthenium similar to RuAl6 showed solubility of at least 10at.% platinum. Most of the other phases showed more limited solubilities for the ternary element: similar to RuAl2, similar to Pt2Al3 and similar to PtAl contained only about 2at.% of the third component similar to Ru4Al13 has less than 1at.% solubility for platinum.
URI: http://hdl.handle.net/10204/1552
http://hdl.handle.net/10204/1552
ISSN: 0925-8388
Appears in Collections:Metrology
General science, engineering & technology

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