LOW-TEMPERATURE HEAT CAPACITY OF SAMARIUM ZIRCONATE (Sm2Zr2O7)

被引：5

作者：

Kopan, A. R. ^{[1
]}

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

Lakiza, S. M. ^{[1
]}

Tishchenko, Ya. S. ^{[1
]}

机构：

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

来源：

POWDER METALLURGY AND METAL CERAMICS | 2010年 / 49卷 / 5-6期

关键词：

thermodynamics; heat capacity; enthalpy; entropy; reduced Gibbs energy; samarium zirconate; THERMAL-CONDUCTIVITY; ND2ZR2O7; PYROCHLORE; OXIDES; BEHAVIOR; CE2ZR2O7; LA2ZR2O7;

D O I：

10.1007/s11106-010-9238-0

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 of Sm2Zr2O7 is investigated for the first time over a temperature range of 60300 K by adiabatic calorimetry. The values of heat capacity, entropy, enthalpy, and reduced Gibbs energy are determined in standard conditions: C-p degrees (298.15 K) = 236.21 +/- 0.94 J . mol.(-1) . K-1; S degrees(298.15 K) = 247.3 +/- 2 J . mol.(-1) . K-1; Phi(298.15 K) = 114.9 +/- 1.7 J . mol.(-1) . K-1; H degrees (298.15 K) - H degrees(0 K) = 39,479 +/- 197 J . mol.(-1).

引用

页码：317 / 323

页数：7

共 22 条

[1] The heat capacity and derived thermodynamic functions of La2Zr2O7 and Ce2Zr2O7 from 4 to 1000 K [J].

Bolech, M ;

Cordfunke, EHP ;

VanGenderen, ACG ;

VanderLaan, RR ;

Janssen, FJJG ;

VanMiltenburg, JC .

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, 1997, 58 (03) :433-439

[2]

Bolgar AS, 1996, ZH FIZ KHIM+, V70, P1185

[3] Structural and bonding properties of stannate pyrochlores: A density functional theory investigation [J].

Chen, Z. J. ;

Xiao, H. Y. ;

Zu, X. T. ;

Wang, L. M. ;

Gao, Fei ;

Lian, Jie ;

Ewing, Rodney C. .

COMPUTATIONAL MATERIALS SCIENCE, 2008, 42 (04) :653-658

[4]

HONGSONG J, 2009, J ALL COMPD, V475, P624

[5]

Leitner J, 2003, THERMOCHIM ACTA, V395, P27

[6] Influence of ytterbium- and samarium-oxides codoping on structure and thermal conductivity of zirconate ceramics [J].

Liu, Zhan-Guo ;

Ouyang, Jia-Hu ;

Zhou, Yu ;

Li, Jing ;

Xia, Xiao-Liang .

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 2009, 29 (04) :647-652

[7] The low-temperature heat capacity of some lanthanide zirconates [J].

Lutique, S ;

Javorsky, P ;

Konings, RJM ;

Krupa, JC ;

van Genderen, CG ;

van Miltenburg, JC ;

Wastin, F .

JOURNAL OF CHEMICAL THERMODYNAMICS, 2004, 36 (07) :609-618

[8] Zirconate pyrochlore as a transmutation target: thermal behaviour and radiation resistance against fission fragment impact [J].

Lutique, S ;

Staicu, D ;

Konings, RJM ;

Rondinella, VV ;

Somers, J ;

Wiss, T .

JOURNAL OF NUCLEAR MATERIALS, 2003, 319 :59-64

[9] Low temperature heat capacity of Nd2Zr2O7 pyrochlore [J].

Lutique, S ;

Javorsky, P ;

Konings, RJM ;

van Genderen, ACG ;

van Miltenburg, JC ;

Wastin, F .

JOURNAL OF CHEMICAL THERMODYNAMICS, 2003, 35 (06) :955-965

[10] The thermal conductivity of Nd2Zr2O7 pyrochlore and the thermal behaviour of pyrochlore-based inert matrix fuel [J].

Lutique, S ;

Konings, RJM ;

Rondinella, W ;

Somers, J ;

Wiss, T .

JOURNAL OF ALLOYS AND COMPOUNDS, 2003, 352 (1-2) :1-5

← 1 2 3 →