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Deformation of Porous, Nanostructured Silver at Room Temperature and 150 °C

Published online by Cambridge University Press:  09 August 2013

Guillaume Noiseau ,
Michael F. Becker ,
John W. Keto  and
Desiderio Kovar
Guillaume Noiseau
Affiliation:
Materials Science and Engineering Graduate Program, The University of Texas at Austin, Austin TX 78712-1591, U.S.A.
Michael F. Becker
Affiliation:
Materials Science and Engineering Graduate Program, The University of Texas at Austin, Austin TX 78712-1591, U.S.A. Department of Electrical and Computer Engineering, The University of Texas at Austin
John W. Keto
Affiliation:
Materials Science and Engineering Graduate Program, The University of Texas at Austin, Austin TX 78712-1591, U.S.A. Department of Physics, The University of Texas at Austin
Desiderio Kovar
Affiliation:
Materials Science and Engineering Graduate Program, The University of Texas at Austin, Austin TX 78712-1591, U.S.A. Department of Mechanical Engineering, The University of Texas at Austin
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Abstract

Porous, nanostructured silver samples were produced using a direct-write method where a nanoparticle aerosol consisting of particles with a mean size of approximately 5 nm were accelerated to speeds of approximately 1000 m/sec and impacted onto a translating substrate [1]. The impacting particles have sufficient energy to stick to the substrate, allowing patterned thick films to be directly written from the aerosol without a mask. Unlike other low temperature processing routes for achieving patterned films, no organics are added that can interfere with postdeposition processing. Typical films are 5- 100 μm thick, up to several centimeters long, and have an as-deposited relative densities as high as 70% of bulk Ag. Compression tests were carried out in steps at room temperature and at 150°C under constant displacement rates. Local strain and densification were measured by optical profilometry between each compression step. The results can be used as a starting point to better understand the mechanisms that govern plasticity, creep, and sintering in nanostructured, porous silver at low processing temperatures.

Keywords

Agdensificationnanoscale
Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1513: Symposium GG – Mechanical Behavior of Metallic Nanostructured Materials , 2013 , mrsf12-1513-gg10-01
Copyright
Copyright © Materials Research Society 2013 

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References

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