Grain Boundary Diffusion and Segregation of Co and Cr in Zr-Based Alloys

C. Corvalán Moya; Manuel J. Iribarren; Nicolás Di Lalla; Fanny Dyment

doi:10.4028/www.scientific.net/DDF.283-286.669

Paper Titles

Desorption Kinetics of Hydrogen in Mg₂NiH₄ Hydride and in Hydrogeneated Eutectic (Mg/Mg₂Ni)H_x
p.639

Ti Redistribution in Multifilamentary Nb/Cu-Sn Composites
p.649

The Effect of Mo Crystallinity on Diffusion through the Si-on-Mo Interface in EUV Multilayer Systems
p.657

Hydrogen Absorption in Ion Beam Sputtered Titanium Thin Films
p.662

Grain Boundary Diffusion and Segregation of Co and Cr in Zr-Based Alloys
p.669

Measurement of Fracture Toughness in AISI 1018 Borided Steels by Vickers Indentation
p.675

Determination of Boron Diffusion Coefficients in Borided Tool Steels
p.681

Diffusion Parameters of Carbide-Forming Elements in Fe-M-C Systems
p.687

Investigation of Harrison Type-A, B and Intermediate AB Kinetics Regimes in Grain Boundary Diffusion
p.697

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Grain Boundary Diffusion and Segregation of Co and Cr in Zr-Based Alloys

Abstract:

51Cr and 60Co diffusion along grain boundary (GB) in polycrystalline Zr and -Zr-20%Nb were measured by means of the radiotracer technique in an overall temperature range [380-1000] K. The use of Harrison´s C and B kinetics resulted in direct data of the GB diffusivity (Dgb) and the apparent GB diffusivity (Pgb). The analyzed temperatures involved those of power reactors service. The GB segregation factors s were determined or evaluated in the limit of very dilute solute concentration.