Conferences

Thermodynamic Properties of Holmium Silicides HoSi1–x, Ho5Si4, and Ho5Si3

L.Goncharuk,
 
V.Sidorko,
 
Yu.I.Buyanov
 

I. M. Frantsevich Institute for Problems of Materials Science of the NAS of Ukraine, Krzhizhanovsky str., 3, Kyiv, 03142, Ukraine
Powder Metallurgy - Kiev: Frantsevich Institute for Problems of Materials Science NASU, 2010, #11/12
http://www.materials.kiev.ua/article/1698

Abstract

The Gibbs free energy, enthalpy, and entropy of formation of holmium silicides HoSi1–x (HoSi0,98), Ho5Si4, and Ho5Si3 from solid components are determined by measuring electromotive forces between 760 and 970 K. Holmium silicide Ho5Si3, which is the most refractory compound in the Ho-Si system, possesses the maximal thermodynamic stability. The high-temperature thermodynamic characteristics of the formation of holmium silicides are determined for the first time.


ENTHALPY, ENTROPY, GIBBS FREE ENERGY, HOLMIUM, SILICON, THERMODYNAMIC PROPERTIES