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Acta Metall Sin  1998, Vol. 34 Issue (12): 1243-1248    DOI:
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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
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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. RELATIONSHIP BETWEEN PARTIAL AND AVERAGE ATOMIC VOLUMES OF COMPONENTS IN Cu-Ni ALLOYS. Acta Metall Sin, 1998, 34(12): 1243-1248.

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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     
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