Abstract
The oxygen Snoek peak was measured at frequency f = 1.10 Hz for Nb-0.05 wt.%C and 48wt.%Nb -52wt.%Ti - 0.1wt.%O alloys. The alloys hydrogenizing leads to the decrease of height and to the shift of the temperature of oxygen Snoek peak for Nb-O and Nb-Ti-O alloys both. The new approach for computer simulation of temperature dependent internal friction spectrum has been carried out for the study of the hydrogen influence mechanism. The following pair interactions have been taken into account: H-O, H-Ti, O-Ti, H-H, O-O. The longranged strain-induced (elastic) interaction model, supplemented by short-range Coulomb repulsion for H-H, H-O, O-O and chemical interaction for H-substitutional and O-substitutional atom was used for simulation. The influence of the interaction on atoms arrangement (short-range order), the activation energy and the preexponential factor of oxygen relaxation time was taken into account. It is shown that the influence of hydrogen on oxygen Snoek peak can be explained by the influence of hydrogen on energy of oxygen atoms in solid solution and therefore on activation energy of diffusion.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
