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Fiber-matrix interface reinforcement using Atomic Layer Deposition

Published online by Cambridge University Press:  15 April 2013

Sari Katz ,
Yacov Carmiel ,
Irina Gouzman ,
Chaim N. Sukenik ,
Hanoch D. Wagner  and
Eitan Grossman
Sari Katz
Affiliation:
Space Environment Department, Soreq NRC, Yavne 81800, Israel.
Yacov Carmiel
Affiliation:
Department of Chemistry and Institute for Nanotechnology and Advanced Materials, Bar-Ilan University, Ramat Gan 52900, Israel
Irina Gouzman
Affiliation:
Space Environment Department, Soreq NRC, Yavne 81800, Israel.
Chaim N. Sukenik
Affiliation:
Department of Chemistry and Institute for Nanotechnology and Advanced Materials, Bar-Ilan University, Ramat Gan 52900, Israel
Hanoch D. Wagner
Affiliation:
Department of Materials and Interfaces, The Weizmann Institute of Science, Rehovot, 76100, Israel.
Eitan Grossman
Affiliation:
Space Environment Department, Soreq NRC, Yavne 81800, Israel.
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Abstract

The interface between a matrix and its reinforcement is critical to the final composite properties. There are different ways to enhance bonding between the reinforcing fiber and the matrix, based mainly on surface plasma treatments which usually decrease the fiber tensile strength. In this research, atomic layer deposition (ALD) was tested as a possible way to enhance the chemical bonding between the fiber and matrix in the hope that it would not effect the fiber tensile strength. Microbond tests were carried out to measure the effect of an ALD aluminum oxide (Al2O3) coating on the fiber/matrix interfacial shear strength, and the fiber tensile strength was measured in order to assess whether this treatment harms the fiber strength. The ultrahigh molecular weight polyethylene (UHMWPE) fibers that were coated by ALD with aluminum oxide (Al2O3) showed a significant increase in the interfacial shear strength without reducing the fibers’ ultimate tensile strength.

Keywords

adhesionatomic layer depositioncomposite

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References

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