Carbon Fiber Nanotube Reinforced Alumina Nanocomposite

Award Information
Agency: Department of Defense
Branch: Air Force
Contract: FA9550-05-C-0154
Agency Tracking Number: F054-023-0167
Amount: $99,998.00
Phase: Phase I
Program: STTR
Awards Year: 2005
Solicitation Year: 2005
Solicitation Topic Code: AF05-T023
Solicitation Number: N/A
Small Business Information
104 Centre Ct., Radford, VA, 24141
DUNS: 101711786
HUBZone Owned: Y
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Edward Yadlowsky
 President, Senior Scientist
 (540) 639-4019
Business Contact
 Robert Hazelton
Title: Secretary/Treasurer
Phone: (540) 639-4019
Research Institution
 Bill Fahrenholtz
 Materials Science & Engineerin, 222 McNutt Hall
Rolla, MO, 65409
 (573) 341-6343
 Nonprofit college or university
Nanocomposites of carbon nanotubes (CNTs) dispersed in alumina powders and consolidated to near 100% theoretical density at low temperatures have been shown to have a four point bend strength 3 times that of pure alumina ceramics. Recently, in situ synthesized CNTs have been produced in alumina powders containing finely dispersed Fe nanoparticles. The anticipated improvement in mechanical properties had not been realized from the collagen like scaffolding of the CNTs when the nanocomposites were consolidated using hot isostatic pressing (HIP). This disappointing performance was attributed to the destruction of the CNTs by the high temperatures used in the HIPing. HY-Tech proposes to consolidate alumina nanocomposite green bodies containing in situ synthesized CNTs using a low temperature pressureless sintering approach. The characteristics of the CNTs and microstructure of the composite will be measured at different times in the fabrication process by scientists at the University of Missouri-Rolla. The studies will assess the effects of varying fabrication parameters on survivability of the CNTs and the bend strength of the nanocomposite material.

* information listed above is at the time of submission.

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