DELFINO , Stefano

The Pr-In system has been studied in the composition range 30-100 at.% In by differential thermal analysis, metallography and X-ray examination. The Pr-rich alloys have been reinvestigated and confirmed. The following intermediate phases were observed: Pr3In (decomposes at 930 ± 10 °C), Pr2In (decomposes at 1020 ± 10 °C), Pr1+xIn (m.p. 1170 ±...

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The data in the literature relevant to the intermediate phases and to the state diagrams of the R-Tl systems (R ≡ rare earth) are analysed and discussed in connection with the methodologies applied to the study of the alloy constitution. On the basis of the various data available, a number of values for the characteristic constants of the...

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The data in the literature relevant to the phase diagrams of the RIn systems (R ≡ rare earth) are analysed, and recent measurements of the melting temperatures of a few selected alloys of the RIn systems are reported. Experimental data from various laboratories are also compared and discussed in connection with the general methodologies applied...

On the basis of the similarities in the alloying behaviours of the different rare earths, the constitutional properties of a few selected promethium alloys are here estimated. Phase diagrams, crystal structures (and lattice parameters) are proposed for the binary alloys of Pm with Mn, Fe, Cu, Ag, Au, Ga, In and Tl. © 1990.

The Nd-Mg system was studied using differential thermal analysis (DTA), X-ray examination, metallography, and microprobe analysis. The following intermetallic compounds were found to exist and their crystal structures confirmed or determined: NdMg (cubic, cP2 CsCl type, melting point 800 °C), NdMg2 (cubic, cF24 MgCu2 type, peritectic formation...

The Pr-Tl system was studied in the composition range 15-100 at.% Tl using differential thermal analysis, metallography and X-ray examination. The praseodymium-rich alloys were reinvestigated and the published phase diagram was confirmed. The following intermetallic compounds were observed: Pr3Tl (decomposes at 800 ± 10 °C); Pr2Tl (decomposes...

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The Sm-In system was studied using differential thermal, metallographic and X-ray analyses. The following intermediate phases were observed: Sm2In (melting point, 1090 ± 10 °C), Sm1+xIn (melting point, 1210 ± 20 °C), Sm3In5 (melting point, 1110 ± 10 °C) and SmIn3 (melting point, 1130 ± 10 °C). Five eutectics occur: β-Sm2In (905 ± 5 °C, 16.5 ± 1...

The general properties of rare earth-manganese alloys are described and reviewed. The Pr-Mn system was studied using differential thermal analysis, X-ray examination, metallography and microprobe analysis. Both the stable phase diagram and information on the metastable equilibria were obtained. Evidence of the peritectic formation (790 °C) of...

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The development of light weight alloys has received great attention in recent years; in this framework Al-Si based alloys are widely used in industries for their low thermal expansion, good resistance to wear and other properties that can be improved by the addition of rare earth elements. In the framework of a general interest in the study of...

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