Thermodynamic properties of holmium monogermanide

被引：2

作者：

Gorbachuk, N. P. ^{[1
]}

Sidorko, V. R. ^{[1
]}

Kirienko, S. N. ^{[1
]}

Obushenko, I. M. ^{[1
]}

机构：

[1] Natl Acad Sci Ukraine, Inst Mat Sci Problems, Kiev, Ukraine

来源：

POWDER METALLURGY AND METAL CERAMICS | 2008年 / 47卷 / 7-8期

关键词：

thermodynamics; heat capacity; enthalpy; entropy; reduced Gibbs energy; germanide;

D O I：

10.1007/s11106-008-9041-3

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The heat capacity and enthalpy of HoGe is investigated for the first time over a temperature range between 51.62 and 2096 K. The values of heat capacity, entropy, reduced Gibbs energy (J • mole -1 × × K -1), and enthalpy (J • mole -1) are determined at 298.15 K: C ° P(T) = 49.63 ± 0.20; S °(T) = 89.1 ± 0.7; Φ′(T) = 50.9 ± 0.8; H °(T) - H °(0 K) = 11391 ± 57. Temperature dependences of enthalpy (J • mole -1) for holmium monogermanide are determined as follows: H °(T) - H °(298.15 K) = 8.474 × × 10 -3 • T 2 + 47.13 • T + 226747 • T -1 - 15565 and H °(T) - H °(298.15 K) = 88.91 • T - 26507, for 298.15-1765 K and 1951-2096 K, respectively. The enthalpy and entropy of HoGe melting are calculated: T m = 1765 ± 35 K, ΔH m = 36.3 ± 2.9 kJ • mole -1, ΔS m = 20.5 ± 1.6 J • mole -1 • K -1. © 2008 Springer Science+Business Media, Inc.

引用

页码：451 / 456

页数：6

共 21 条

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