Estimation of thermodynamic properties of Cu-La binary alloy with modified Miedema's theory

IMR OpenIR

	Estimation of thermodynamic properties of Cu-La binary alloy with modified Miedema's theory
	Li, Hai-hong; Zhang, Shi-hong; Chen, Yan; Cheng, Ming; Song, Hong-wu; Liu, Jin-song; shzhang@imr.ac.cn
	2016
发表期刊	RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A
ISSN	0036-0244
卷号	90 期号:1 页码:11-17
摘要	According to modified Miedema's theory, mixing enthalpies (Delta H), excess entropies (S (E)), excess Gibbs free energy (G (E)), and component activities (a) of Cu-La binary alloy were estimated using the basic thermodynamic principles and some simple physical parameters of Cu and La, such as electronegativity, atomic volume and electron density. Based on the Cu-La binary alloy phase diagram, the Gibbs free energy of the phase precipitation reactions of Cu6La and Cu5La was deduced. The results showed that the values of Delta H, S (E), and G (E) of Cu-La binary alloy were all negative. Compared to the ideal solution, the activities of the components presented a large negative deviation from Raoult's law, which indicated that there was a strong interaction between Cu and La. The calculated data are well consistent with the experimental data. The Gibbs free energies of the phase precipitation reactions of Cu6La are lower than those for Cu5La, which means that Cu6La is thermodynamically more stable than Cu5La. Furthermore, the experimental results show that rareearth rich Cu6La phase particles in copper matrix are formed after La microalloying.
部门归属	[li, hai-hong] yantai univ, sch environm & mat engn, yantai 264005, peoples r china ; [li, hai-hong ; zhang, shi-hong ; chen, yan ; cheng, ming ; song, hong-wu ; liu, jin-song] chinese acad sci, inst met res, shenyang 110016, peoples r china
关键词	Cu-la Alloy Thermodynamics Activity Gibbs Free Energy Miedema's Theory
资助者	CAS Agenda to Provide S&T Support and Services for National Strategic Emerging Industries; Project of Shandong Province Higher Educational Science and Technology Program [J15LA52]
收录类别	sci
语种	英语
WOS记录号	WOS:000366376500002
引用统计	被引频次：5[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/74832
专题	中国科学院金属研究所
通讯作者	shzhang@imr.ac.cn
推荐引用方式 GB/T 7714	Li, Hai-hong,Zhang, Shi-hong,Chen, Yan,et al. Estimation of thermodynamic properties of Cu-La binary alloy with modified Miedema's theory[J]. RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A,2016,90(1):11-17.
APA	Li, Hai-hong.,Zhang, Shi-hong.,Chen, Yan.,Cheng, Ming.,Song, Hong-wu.,...&shzhang@imr.ac.cn.(2016).Estimation of thermodynamic properties of Cu-La binary alloy with modified Miedema's theory.RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A,90(1),11-17.
MLA	Li, Hai-hong,et al."Estimation of thermodynamic properties of Cu-La binary alloy with modified Miedema's theory".RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A 90.1(2016):11-17.