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The Lanthanum-Thallium System by Stefano Delfino; Adriana Saccone; Gabriele Cacciamani; Riccardo Ferro is a Engineering article available to read on EtoBox.

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The La-Tl system was examined in the composition range 25 to 100 at.% Tl using differential thermal analysis, metallography, EPMA and X-ray examination. The lanthanum-rich alloys were reinvestigated and the published phase diagram was confirmed. Six intermediate phases were found to exist ofwhich one forms peritectoidally (La3T| at 645 °C), two form peritectically (La>Tl at 895 °C, LasI|3 at 950 °C) and three melt congruently (LaTl at 1220 °C, La3Tl, at 1120 °C, LaTl, at 1060 °C). Eutectic reactions occur at 17.5 at.% Tland 655 °C, 58.0 at.% Tl and 1100 °C, 70.0 at.% Tland 1045 °C, greaterthan 99.5 at.% TI and 303 °C. A eutectoid reaction between £-La and LazT| occurs at 10.0 at.% TI and 640 °C. The crystal structures ofLasll3, LazTIs and LaTlz3 were confirmed. The characteristics ofthe phase diagram are compared with those of other RE-TI systems. ## Das Zustandsdiagramm Lanthan-Thallium Das System La-Tl wurde differentialthermoanalytisch, metallografisch, röntgenografisch und mit der Elektronenmikrosonde bestimmt. Legierungen sind zwischen 25 und 100 At.-% Tl untersucht worden. Folgende intermetallische Phasen wurden beobachtet: La3T| (peritektoidische Bildung bei 645 °C), La;T| (

Who reads The Lanthanum-Thallium System?

Author

Stefano Delfino; Adriana Saccone; Gabriele Cacciamani; Riccardo Ferro

Publisher

Walter de Gruyter GmbH

Published

1985

Field

Engineering (Physical Sciences)