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Metal-Encapsulated CNTs to Enhance Steel Wire Performance

Award Information
Agency: Department of Defense
Branch: Navy
Contract: N68335-18-C-0306
Agency Tracking Number: N171-024-0905
Amount: $998,731.00
Phase: Phase II
Program: SBIR
Solicitation Topic Code: N171-024
Solicitation Number: 17.1
Solicitation Year: 2017
Award Year: 2018
Award Start Date (Proposal Award Date): 2018-03-26
Award End Date (Contract End Date): 2023-03-24
Small Business Information
200 Yellow Place Pines Industrial Center
Rockledge, FL 32955
United States
DUNS: 175302579
HUBZone Owned: No
Woman Owned: No
Socially and Economically Disadvantaged: No
Principal Investigator
 Justin Hill
 Senior Engineer
 (321) 631-3550
Business Contact
 Dr. Robert P. Scaringe
Phone: (321) 631-3550
Research Institution

The addition of CNTs traditional steel cabling has the potential to significantly improve cable strength and longevity. However, previous methods for CNT integration struggle due to CNT aggregation and poor interfacial interactions between CNT and matrix. Mainstream’s CNT coating process is based on a simple, scalable, one-pot process that uses emulsion chemistry to coat a metal on the surface of the nanotubes. This coating provides an iron-coated CNT nanopowder which enhances the binding of the CNT to the steel matrix, improves mixability, and limits aggregation. In addition, the emulsion chemistry enhances the matrix/CNT interface, improving both mechanical properties. During the Phase I, Mainstream showed a 90% increase in fatigue life by integrating Fe-coated CNTs into a pure iron matrix. During the Phase II work, we will advance the state-of-the-art FeCNT encapsulation process developed during Phase I and optimize the composite loading, mixing, and fabricating conditions before testing in relevant conditions.

* Information listed above is at the time of submission. *

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