Cu-Ni合金组元的偏原子体积与平均原子体积的关系

金属学报

1998, Vol. 34

Issue (12): 1243-1248

论文

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Cu-Ni合金组元的偏原子体积与平均原子体积的关系

谢佑卿

中南工业大学材料科学与工程系;长沙;410083

RELATIONSHIP BETWEEN PARTIAL AND AVERAGE ATOMIC VOLUMES OF COMPONENTS IN Cu-Ni ALLOYS

XIE Youqing(Department of Materials Science and Engineering; Central South University of Technology; ChangSha 410083)CorrsPondent: XIE Youqing; pwtsson Tel: (O731)8879287; Fax: (0731)8826136Manuscript received 1997-12-1; in revised form 1998-0406

引用本文:

谢佑卿. Cu-Ni合金组元的偏原子体积与平均原子体积的关系[J]. 金属学报, 1998, 34(12): 1243-1248.
. RELATIONSHIP BETWEEN PARTIAL AND AVERAGE ATOMIC VOLUMES OF COMPONENTS IN Cu-Ni ALLOYS[J]. Acta Metall Sin, 1998, 34(12): 1243-1248.

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摘要: 本文建立了固溶体组元的偏摩尔性质与平均摩尔性质的一般关系式和CC理论中的偏摩尔性质函数；导出了组元的偏摩尔性质与平均摩尔性质的差值方程和差值约束方程，以及Gibbs—Duhem一般式；证明了由CC理论中固溶体平均摩尔性质各组合函数求得的偏摩尔性质是相等的，但在一般情况下，偏摩尔性质不等于组元的平均摩尔性质．以CU-Ni合金和组元的平均原子体积以及组元的偏原子体积的计算为例，证明了这些论述．

关键词 ： Cu-Ni合金, 平均摩尔性质, 偏摩尔性质, 原子体积, 晶格常数

Abstract：General equations of relationship between partial and average molar propertiesof alloy components and functions of partial molar properties in CC theory have been established.The differential equation and its constraining equation between partial and average molar proWerties and general Gibbs--Duhem formula have been derived. It has been proved that the partialmolar properties calculated from various combinative functions of average molar properties areequal, but in general the partial molar properties are not equal to the average molar propertiesof a given component. All equations and functions established in this paper have been provedto be correct by calculations of partial and average atomic volumes of components and averageatomic volumes of the solid solutions in the Cu-Ni system.

Key words： Cu-Ni alloy average molar property partial molar property atodric volume lattice constant

基金资助:国家自然科学基金!59671030

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1谢佑卿.中国科学,1997;E27:488(Xie Y Q.SCi Chin,1998; E41:146)
2谢佑卿,张晓东中国科学,1998;E28:12(Xie Y Q, Zhang X D. Sci Chin, 1998; E41: 157)
3 Walter J M. Physical Chemistry London: Longman Group Limited; 1976: 230
4谢佑卿,张晓东金属学报,1994;A30:531(Xie Y Q, Zhang X D. Acta Metall Sin, 1994; A30: 531)
5谢信卿,马柳莺,张晓东等.中国科学,19932 A23:999(Xie Y Q, Ma L Y, Zhang X D et al. Sci Chin, 1993; A36: 612)

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