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Silver diffusion in zirconium

Authors:	R Tendler C.F Varotto

Affiliation:	Departamento de Metalurgia, Comisión National de Energía Atómica Av. del Libertador 8250, Buenos Aires, Argentina;Centro Atómico Bariloche (CNEA), Instituto de Física “J.A. Balseiro” (UNC) S.C. de Bariloche, Río Negro, Argentina

Abstract:	The diffusion coefficients of Ag in both α and β phases of Zr are reported. The temperature dependence of the diffusion coefficients may be expressed by $D_{α?Zr}^{Ag^{110}} = 5.1 × 10^{?3} exp (?44700 RT) cm^{2} / sec$ and $D_{β?Zr}^{Ag^{110}} = 5.7 × 10^{?4} exp (?32700 RT) cm^{2} / sec$ and is strongly dependent on the phase transition. The general diffusion behaviour is analyzed in terms of the Hägg and the Anthony and Turnbull rules, indicating that Ag diffuses as substitutional in Zr.

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