Improved Additives for Perfluoropolyalkylether (PFPAE) Lubricants with Silicon Nitride Rolling Elements

Award Information
Agency: Department of Defense
Branch: Air Force
Contract: FA8650-07-C-5003
Agency Tracking Number: F061-100-1845
Amount: $748,878.00
Phase: Phase II
Program: SBIR
Awards Year: 2007
Solicitation Year: 2006
Solicitation Topic Code: AF06-100
Solicitation Number: 2006.1
Small Business Information
300 Westdale Avenue, Westerville, OH, 43082
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Richard Sapienza
 Senior Scientist
 (614) 797-2200
Business Contact
 Kenneth Heater
Title: President/COO
Phone: (614) 797-2200
Research Institution
Hybrid bearings utilizing silicon nitride rolling elements in conjunction with steel inner and outer bearing races are being developed for use in gas turbine engines. Due to their outstanding thermal and oxidative stability, perfluoropolyalkylether (PFPAE) fluids are of interest as potential high temperature liquid lubricants in these systems. However, this same unique chemistry that provides their higher stabilities also creates some potential problems. One of these is the lack of compatibility with silicon nitride rolling elements. Under the Phase I program, METSS investigated a series of promising, new, soluble additives for PFPAE fluids that demonstrated significant improvement in compatibility with silicon nitride bearing materials under tribological stress conditions and high temperature exposures. Under the proposed Phase II program. METSS will build upon the knowledge gained from the Phase I program to develop a new improved class of PFPAE lubricants optimized for compatibility with hybrid bearing materials. The proposed program will also address additional issues related to material compatibility issues, personnel safety, environmental impact and use costs. The Phase II efforts will clearly define and support a viable path for technology commercialization and field implementation.

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

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