Kinetic peculiarities of Cd21Ni5 intermetallic growth

被引：13

作者：

Paritskaya, LN ^{[1
]}

Bogdanov, VV ^{[1
]}

机构：

[1] KHARKOV AM GORKII STATE UNIV,DEPT CRYSTAL PHYS,UA-310077 KHARKOV,UKRAINE

来源：

DEFECT AND DIFFUSION FORUM | 1997年 / 143卷

关键词：

phase growth; linear and parabolic stages; stoichiometry; dynamic kinetic coefficients;

D O I：

10.4028/www.scientific.net/DDF.143-147.615

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Kinetic properties of gamma-phase (Cd21Ni5) growth in the binary system Cd-Ni were studied at hydrostatic pressures of 0.1 - 50 MPa. An unusually long linear stage of growth was observed, and the growth rate was increasing with the pressure. Arrhenius equations for the kinetic and diffusion coefficients describing correspondingly the linear and parabolic stages of growth were obtained. High values of ''dynamic'' diffusion coefficients and low activation energies for both diffusion (Q(D)) and interfacial reactions (Q(B)) were obtained. The mechanism of Cd diffusion in non-stoichiometric Cd21Ni5 phase is discussed.

引用

页码：615 / 620

页数：6

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