Investigation of mutual diffusion in V-5at% Fe alloyviainterstitial mechanism
- 1 January 1997
- journal article
- Published by Taylor & Francis in Radiation Effects and Defects in Solids
- Vol. 140 (2) , 151-170
Abstract
Changes in the near-surface region of V-5Fe alloy after irradiation at room temperature with 50 keV V+ ions to fluences in the range from 1019 to 1021 ion/m2 have been investigated. Radiation-induced segregation profiles were measured by means of XPS with ion sputtering. Calculations of the segregation profiles were performed using diffusion equations modified for the case of ion irradiation at temperatures where the vacancies are immobile. The difference in the interstitial diffusion coefficients of alloy components were considered as the main driving force for the component redistribution. By fitting the experimental data the ratio of iron to vanadium interstitial diffusion coefficients δi has been evaluated. Assuming the equality of the pre-exponential factors in the diffusion coefficients, a temperature dependence of δi has been found. An analytical expression for δi has been derived.Keywords
This publication has 17 references indexed in Scilit:
- Calculation of radiation-induced segregation in binary alloy ion-irradiated at low-temperaturesPlasma Devices and Operations, 1994
- Dislocation Motion Influence on Bias Factor in Binary Alloys under IrradiationMaterials Science Forum, 1992
- On the shift of a phase equilibrium curve in binary alloys under irradiationJournal of Nuclear Materials, 1988
- Three-dimensional distributions of ion range and damage including recoil transportNuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 1987
- Bombardment-induced segregation and redistributionNuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 1986
- Effect of substitutional and interstitial elements on void formation in neutron-irradiated vanadium alloysJournal of Nuclear Materials, 1982
- High–temperature positron annihilation and vacancy formation in refractory metalsPhilosophical Magazine A, 1979
- A theory of radiation-induced segregation in concentrated alloysJournal of Nuclear Materials, 1979
- Mechanisms of radiation-induced segregation in dilute nickel alloysJournal of Nuclear Materials, 1979
- Isotope Effect for Diffusion of Iron in VanadiumPhysical Review B, 1968