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Nanomechanics and Testing of Core-Shell Composite Ligaments for High Strength, Light Weight Foams

Published online by Cambridge University Press:  11 July 2017

Aiganym Yermembetova ,
Raheleh M. Rahimi ,
Chang-Eun Kim ,
Jack L. Skinner ,
Jessica M. Andriolo ,
John P. Murphy  and
David F. Bahr
Aiganym Yermembetova
Affiliation:
School of Materials Engineering, Purdue University, West Lafayette, IN 47907 U.S.A.
Raheleh M. Rahimi
Affiliation:
School of Materials Engineering, Purdue University, West Lafayette, IN 47907 U.S.A.
Chang-Eun Kim
Affiliation:
School of Materials Engineering, Purdue University, West Lafayette, IN 47907 U.S.A.
Jack L. Skinner
Affiliation:
Mechanical Engineering, Montana Tech, Butte, MT 59701 U.S.A. Montana Tech Nanotechnology Laboratory, Butte, MT 59701 U.S.A.
Jessica M. Andriolo
Affiliation:
Montana Tech Nanotechnology Laboratory, Butte, MT 59701 U.S.A.
John P. Murphy
Affiliation:
Montana Tech Nanotechnology Laboratory, Butte, MT 59701 U.S.A.
David F. Bahr*
Affiliation:
School of Materials Engineering, Purdue University, West Lafayette, IN 47907 U.S.A.
*
*(Email: dfbahr@purdue.edu)
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Abstract

Composite nanostructured foams consisting of a metallic shell deposited on a polymeric core were formed by plating copper via electroless deposition on electrospun polycaprolactone (PCL) fiber mats. The final structure consisted of 1000-nm scale PCL fibers coated with 100s of nm of copper, leading to final core-shell thicknesses on the order of 1000-3000 nm. The resulting open cell, core-shell foams had relative densities between 4 and 15 %. By controlling the composition of the adjuncts in the plating bath, particularly the composition of formaldehyde, the relative thickness of copper coating as the fiber diameter could be controlled. As-spun PCL mats had a nominal compressive modulus on the order of 0.1 MPa; adding a uniform metallic shell increased the modulus up to 2 MPa for sub-10 % relative density foams. A computational materials science analysis using density functional theory was used to explore the effects pre-treatment with Pd may have on the density of nuclei formed during electroless plating.

Keywords

nano-indentationfoamcomposite
Type
Articles
Information
MRS Advances , Volume 2 , Issue 58-59: Nanomaterials , 2017 , pp. 3577 - 3583
Copyright
Copyright © Materials Research Society 2017 

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References

REFERENCES

Ashby, M.F., Gibson, L.J., Cellular Solids 2nd ed. (Cambridge University Press, Cambridge 1999) pp. 175–217.Google Scholar
Hossain, M.S., Shabani, B., J. Power Sources 295, 275 (2015)Google Scholar
Kolaczkowski, S.T., Awdry, S., Smith, T., Thomas, D., Torkuhl, L., Kolvenbach, R., Catal. Today 273, 221 (2016).CrossRefGoogle Scholar
San Marchi, C., Mortensen, A., Acta. Mater. 49, 3959 (2001).Google Scholar
Sun, Y., Kucera, K.P., Burger, S.A., Balk, T.J., Scripta Mater. 58, 1018 (2008).Google Scholar
Beisel, J.D., Murphy, J.P., Andriolo, J.M., Kooistra-Manning, E.A., Nicolaysen, S., Boese, O., Fleming, J., Nakagawa, W., Skinner, J.L., J. Vac. Sci. Tech B, 34, 06KG02 (2016).Google Scholar
Oliver, W.C., Pharr, G.M., J. Mater. Res. 19, 3 (2004)Google Scholar
Perdew, J.P., Burke, K., Ernzerhof, M., Phys. Rev. Lett. 77, 3865 (1996).CrossRefGoogle Scholar
Kresse, G., Furthmuller, J., Phys. Rev. B 54, 11169 (1996).Google Scholar
Kresse, G., Furthmuller, J., Comp. Mater. Sci. 6, 15 (1996).Google Scholar
Kim, C.E., Rahimi, R.M., Maxwell, T.L., Balk, T.J., Bahr, D.F., Scripta Mater. 136, 33 (2017).Google Scholar
Grimme, S., Anthony, J., Ehrlich, S., Krieg, H., J. Chem. Phys. 132, 154104 (2010).Google Scholar