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Enthalpies of mixing in binary Mn–In and ternary Mn–In–Gd liquid alloys

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Published/Copyright: March 26, 2018

Abstract

The enthalpies of mixing in liquid alloys of the binary Mn–In and ternary Mn–In–Gd systems were determined over a wide range of compositions by means of isoperibolic calorimetry in the temperature range 1 500 – 1 650 K. The enthalpies of mixing in the Mn–In system demonstrate endothermic effects (ΔHmax = 4.66 ± 0.38 kJ · mol−1 at xIn = 0.40). The enthalpies of mixing in the liquid ternary Mn–In–Gd alloys were determined along six sections (xMn/xIn = 0.22/0.78; 0.44/0.56; 0.65/0.35 and 0.83/0.17 for xGd changed from 0 up to 0.5 and xMn/xGd = 0.30/0.70; 0.60/0.40 for xIn changed from 0 up to 0.3). Enthalpies of mixing in the ternary system were found to be predominantly exothermic and steadily increasing in absolute values towards the Gd–In boundary binary system, reaching the maximum value in the vicinity of the phase GdIn.


*Correspondence address, Dr. Natalia Usenko, Taras Shevchenko National University, Department of Chemistry, 64, Volodymirska St. 01601 Kyiv Ukraine, Tel.: +380442393370, E-mail:

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Received: 2017-09-08
Accepted: 2017-11-21
Published Online: 2018-03-26
Published in Print: 2018-04-13

© 2018, Carl Hanser Verlag, München

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