Ion Irradiation Induced Grain Growth and Lateral Thin Film Reactions PDF Download
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Author: Joyce Cornell Liu
Publisher:
ISBN:
Category : Crystal growth
Languages : en
Pages : 408
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Author: Joyce Cornell Liu
Publisher:
ISBN:
Category : Crystal growth
Languages : en
Pages : 408
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Book Description
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
In situ observations of 1.5 MeV Xe ion irradiated Au films at room temperature and at 150°C reveal the evolution of grain growth: the average grain size increases by the mechanisms of grain boundary migration and grain coalescence. 10 refs., 4 figs.
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Category :
Languages : en
Pages : 10
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Irradiation experiments were conducted on multilayer (ML) and coevaporated (CO) thin films in order to examine the role that the heat of mixing ([Delta]H{sub mix}) has in ion-induced grain growth. Room temperature irradiations using 1.7 MeV Xe were performed in the High Voltage Electron Microscope at Argonne National Laboratory. The alloys studied (Pt-Ti, Pt-V, Pt-Ni, Au-Co and Ni-Al) spanned a large range of [Delta]H{sub mix} values. Comparison of grain growth rates between ML and CO films of a given alloy confirmed a heat of mixing effect. Differences in grain growth rates between ML and CO films scaled according to the sign and magnitude of [Delta]H{sub mix} of the system (with exception of the Pt-V system). Substantial variations in growth rates among CO alloy films experiencing similar irradiation damage demonstrated that a purely collisional approach is inadequate for describing ion-induced grain growth and consideration must also be given to material-specific properties. Results from CO alloy films were consistent with a thermal spike model of ion-induced grain growth. The grain boundary mobility was observed to be proportional to the thermal spike-related parameter, (F{sub D}2)/([Delta]H{sub coh}3), where F{sub D} is the deposited damage energy and [Delta]H{sub coh} is the cohesive energy.
Author:
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ISBN:
Category :
Languages : en
Pages : 7
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A thermal spike model has been developed to describe the phenomenon of ion irradiation-induced grain growth in metal alloy thin films. In single phase films where the driving force for grain growth is the reduction of grain boundary curvature, the model shows that ion-induced grain boundary mobility, M{sub ion}, is proportional to the quantity F{sub D}2/[Delta]H{sub coh}3, where F{sub D} is the deposited ion damage energy and [Delta]H{sub coh} is the cohesive energy of the element or alloy. Experimental strain growth results from ion irradiated coevaporated binary alloy films compare favorably with model predictions. 11 refs., 1 fig., 1 tab.
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Category :
Languages : en
Pages : 7
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Experiments were performed demonstrating that ion irradiation enhances diffusion-induced grain boundary migration (DIGM) in polycrystalline Au/Cu bilayers. Here, a model is presented relating film-averaged Cu composition in Au with treatment time, grain size and film thickness. Application of this model to the experimental results indicates that irradiation enhances DIGM by increasing the grain boundary velocity. Effects of DIGM and irradiation-induced grain growth on the temperature dependence of ion mixing in bilayers are discussed.
Author: Vladimir Matias
Publisher:
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 216
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The MRS Symposium Proceeding series is an internationally recognised reference suitable for researchers and practitioners.
Author: DALE EDWARD ALEXANDER
Publisher:
ISBN:
Category :
Languages : en
Pages : 213
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Book Description
heat-of-mixing released during irradiation.
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ISBN:
Category : Aeronautics
Languages : en
Pages : 716
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Author:
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ISBN:
Category : Power resources
Languages : en
Pages : 420
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Author:
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ISBN:
Category :
Languages : en
Pages : 7
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