Imperial College London
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Professor Michael W. Finnis

Faculty of Engineering, Department of Materials

Chair in Materials Theory and Simulation
 
 
 
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Contact

 

+44 (0)20 7594 6812m.finnis Website

 
 
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Location

 

2.27BRoyal School of MinesSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Kumar:2018:10.1038/s41467-018-07724-7,
author = {Kumar, A and Barda, H and Klinger, L and Finnis, MW and Lordi, V and Rabkin, E and Srolovitz, DJ},
doi = {10.1038/s41467-018-07724-7},
journal = {Nature Communications},
pages = {1--8},
title = {Anomalous diffusion along metal/ceramic interfaces},
url = {http://dx.doi.org/10.1038/s41467-018-07724-7},
volume = {9},
year = {2018}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - Interface diffusion along a metal/ceramic interface present in numerous energy and electronic devices can critically affect their performance and stability. Hole formation in a polycrystalline Ni film on an α-Al2O3 substrate coupled with a continuum diffusion analysis demonstrates that Ni diffusion along the Ni/α-Al2O3 interface is surprisingly fast. Ab initio calculations demonstrate that both Ni vacancy formation and migration energies at the coherent Ni/α-Al2O3 interface are much smaller than in bulk Ni, suggesting that the activation energy for diffusion along coherent Ni/α-Al2O3 interfaces is comparable to that along (incoherent/high angle) grain boundaries. Based on these results, we develop a simple model for diffusion along metal/ceramic interfaces, apply it to a wide range of metal/ceramic systems and validate it with several ab initio calculations. These results suggest that fast metal diffusion along metal/ceramic interfaces should be common, but is not universal.
AU  - Kumar,A
AU  - Barda,H
AU  - Klinger,L
AU  - Finnis,MW
AU  - Lordi,V
AU  - Rabkin,E
AU  - Srolovitz,DJ
DO  - 10.1038/s41467-018-07724-7
EP  - 8
PY  - 2018///
SN  - 2041-1723
SP  - 1
TI  - Anomalous diffusion along metal/ceramic interfaces
T2  - Nature Communications
UR  - http://dx.doi.org/10.1038/s41467-018-07724-7
UR  - http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000452633200010&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
UR  - https://www.nature.com/articles/s41467-018-07724-7
UR  - http://hdl.handle.net/10044/1/81640
VL  - 9
ER  -
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